Enum std::ascii::Char

source ·
#[repr(u8)]
pub enum Char {
Show 128 variants Null = 0, StartOfHeading = 1, StartOfText = 2, EndOfText = 3, EndOfTransmission = 4, Enquiry = 5, Acknowledge = 6, Bell = 7, Backspace = 8, CharacterTabulation = 9, LineFeed = 10, LineTabulation = 11, FormFeed = 12, CarriageReturn = 13, ShiftOut = 14, ShiftIn = 15, DataLinkEscape = 16, DeviceControlOne = 17, DeviceControlTwo = 18, DeviceControlThree = 19, DeviceControlFour = 20, NegativeAcknowledge = 21, SynchronousIdle = 22, EndOfTransmissionBlock = 23, Cancel = 24, EndOfMedium = 25, Substitute = 26, Escape = 27, InformationSeparatorFour = 28, InformationSeparatorThree = 29, InformationSeparatorTwo = 30, InformationSeparatorOne = 31, Space = 32, ExclamationMark = 33, QuotationMark = 34, NumberSign = 35, DollarSign = 36, PercentSign = 37, Ampersand = 38, Apostrophe = 39, LeftParenthesis = 40, RightParenthesis = 41, Asterisk = 42, PlusSign = 43, Comma = 44, HyphenMinus = 45, FullStop = 46, Solidus = 47, Digit0 = 48, Digit1 = 49, Digit2 = 50, Digit3 = 51, Digit4 = 52, Digit5 = 53, Digit6 = 54, Digit7 = 55, Digit8 = 56, Digit9 = 57, Colon = 58, Semicolon = 59, LessThanSign = 60, EqualsSign = 61, GreaterThanSign = 62, QuestionMark = 63, CommercialAt = 64, CapitalA = 65, CapitalB = 66, CapitalC = 67, CapitalD = 68, CapitalE = 69, CapitalF = 70, CapitalG = 71, CapitalH = 72, CapitalI = 73, CapitalJ = 74, CapitalK = 75, CapitalL = 76, CapitalM = 77, CapitalN = 78, CapitalO = 79, CapitalP = 80, CapitalQ = 81, CapitalR = 82, CapitalS = 83, CapitalT = 84, CapitalU = 85, CapitalV = 86, CapitalW = 87, CapitalX = 88, CapitalY = 89, CapitalZ = 90, LeftSquareBracket = 91, ReverseSolidus = 92, RightSquareBracket = 93, CircumflexAccent = 94, LowLine = 95, GraveAccent = 96, SmallA = 97, SmallB = 98, SmallC = 99, SmallD = 100, SmallE = 101, SmallF = 102, SmallG = 103, SmallH = 104, SmallI = 105, SmallJ = 106, SmallK = 107, SmallL = 108, SmallM = 109, SmallN = 110, SmallO = 111, SmallP = 112, SmallQ = 113, SmallR = 114, SmallS = 115, SmallT = 116, SmallU = 117, SmallV = 118, SmallW = 119, SmallX = 120, SmallY = 121, SmallZ = 122, LeftCurlyBracket = 123, VerticalLine = 124, RightCurlyBracket = 125, Tilde = 126, Delete = 127,
}
🔬This is a nightly-only experimental API. (ascii_char #110998)
Expand description

One of the 128 Unicode characters from U+0000 through U+007F, often known as the ASCII subset.

Officially, this is the first block in Unicode, Basic Latin. For details, see the C0 Controls and Basic Latin code chart.

This block was based on older 7-bit character code standards such as ANSI X3.4-1977, ISO 646-1973, and NIST FIPS 1-2.

§When to use this

The main advantage of this subset is that it’s always valid UTF-8. As such, the &[ascii::Char] -> &str conversion function (as well as other related ones) are O(1): no runtime checks are needed.

If you’re consuming strings, you should usually handle Unicode and thus accept strs, not limit yourself to ascii::Chars.

However, certain formats are intentionally designed to produce ASCII-only output in order to be 8-bit-clean. In those cases, it can be simpler and faster to generate ascii::Chars instead of dealing with the variable width properties of general UTF-8 encoded strings, while still allowing the result to be used freely with other Rust things that deal in general strs.

For example, a UUID library might offer a way to produce the string representation of a UUID as an [ascii::Char; 36] to avoid memory allocation yet still allow it to be used as UTF-8 via as_str without paying for validation (or needing unsafe code) the way it would if it were provided as a [u8; 36].

§Layout

This type is guaranteed to have a size and alignment of 1 byte.

§Names

The variants on this type are Unicode names of the characters in upper camel case, with a few tweaks:

  • For <control> characters, the primary alias name is used.
  • LATIN is dropped, as this block has no non-latin letters.
  • LETTER is dropped, as CAPITAL/SMALL suffices in this block.
  • DIGITs use a single digit rather than writing out ZERO, ONE, etc.

Variants§

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Null = 0

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0000 (The default variant)

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StartOfHeading = 1

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0001

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StartOfText = 2

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0002

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EndOfText = 3

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0003

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EndOfTransmission = 4

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0004

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Enquiry = 5

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0005

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Acknowledge = 6

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0006

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Bell = 7

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0007

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Backspace = 8

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0008

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CharacterTabulation = 9

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0009

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LineFeed = 10

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+000A

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LineTabulation = 11

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+000B

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FormFeed = 12

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+000C

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CarriageReturn = 13

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+000D

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ShiftOut = 14

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+000E

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ShiftIn = 15

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+000F

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DataLinkEscape = 16

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0010

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DeviceControlOne = 17

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0011

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DeviceControlTwo = 18

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0012

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DeviceControlThree = 19

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0013

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DeviceControlFour = 20

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0014

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NegativeAcknowledge = 21

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0015

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SynchronousIdle = 22

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0016

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EndOfTransmissionBlock = 23

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0017

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Cancel = 24

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0018

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EndOfMedium = 25

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0019

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Substitute = 26

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+001A

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Escape = 27

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+001B

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InformationSeparatorFour = 28

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+001C

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InformationSeparatorThree = 29

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+001D

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InformationSeparatorTwo = 30

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+001E

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InformationSeparatorOne = 31

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+001F

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Space = 32

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0020

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ExclamationMark = 33

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0021

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QuotationMark = 34

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0022

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NumberSign = 35

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0023

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DollarSign = 36

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0024

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PercentSign = 37

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0025

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Ampersand = 38

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0026

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Apostrophe = 39

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0027

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LeftParenthesis = 40

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0028

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RightParenthesis = 41

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0029

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Asterisk = 42

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+002A

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PlusSign = 43

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+002B

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Comma = 44

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+002C

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HyphenMinus = 45

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+002D

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FullStop = 46

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+002E

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Solidus = 47

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+002F

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Digit0 = 48

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0030

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Digit1 = 49

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0031

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Digit2 = 50

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0032

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Digit3 = 51

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0033

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Digit4 = 52

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0034

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Digit5 = 53

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0035

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Digit6 = 54

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0036

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Digit7 = 55

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0037

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Digit8 = 56

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0038

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Digit9 = 57

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0039

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Colon = 58

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+003A

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Semicolon = 59

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+003B

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LessThanSign = 60

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+003C

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EqualsSign = 61

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+003D

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GreaterThanSign = 62

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+003E

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QuestionMark = 63

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+003F

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CommercialAt = 64

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0040

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CapitalA = 65

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0041

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CapitalB = 66

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0042

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CapitalC = 67

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0043

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CapitalD = 68

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0044

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CapitalE = 69

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0045

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CapitalF = 70

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0046

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CapitalG = 71

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0047

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CapitalH = 72

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0048

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CapitalI = 73

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0049

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CapitalJ = 74

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+004A

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CapitalK = 75

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+004B

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CapitalL = 76

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+004C

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CapitalM = 77

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+004D

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CapitalN = 78

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+004E

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CapitalO = 79

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+004F

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CapitalP = 80

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0050

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CapitalQ = 81

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0051

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CapitalR = 82

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0052

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CapitalS = 83

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0053

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CapitalT = 84

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0054

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CapitalU = 85

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0055

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CapitalV = 86

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0056

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CapitalW = 87

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0057

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CapitalX = 88

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0058

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CapitalY = 89

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0059

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CapitalZ = 90

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+005A

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LeftSquareBracket = 91

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+005B

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ReverseSolidus = 92

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+005C

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RightSquareBracket = 93

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+005D

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CircumflexAccent = 94

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+005E

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LowLine = 95

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+005F

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GraveAccent = 96

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0060

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SmallA = 97

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0061

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SmallB = 98

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0062

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SmallC = 99

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0063

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SmallD = 100

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0064

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SmallE = 101

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0065

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SmallF = 102

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0066

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SmallG = 103

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0067

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SmallH = 104

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0068

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SmallI = 105

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0069

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SmallJ = 106

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+006A

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SmallK = 107

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+006B

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SmallL = 108

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+006C

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SmallM = 109

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+006D

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SmallN = 110

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+006E

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SmallO = 111

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+006F

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SmallP = 112

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0070

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SmallQ = 113

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0071

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SmallR = 114

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0072

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SmallS = 115

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0073

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SmallT = 116

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0074

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SmallU = 117

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0075

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SmallV = 118

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0076

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SmallW = 119

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0077

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SmallX = 120

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0078

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SmallY = 121

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+0079

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SmallZ = 122

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+007A

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LeftCurlyBracket = 123

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+007B

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VerticalLine = 124

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+007C

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RightCurlyBracket = 125

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+007D

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Tilde = 126

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+007E

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Delete = 127

🔬This is a nightly-only experimental API. (ascii_char_variants #110998)

U+007F

Implementations§

source§

impl AsciiChar

source

pub const fn from_u8(b: u8) -> Option<AsciiChar>

🔬This is a nightly-only experimental API. (ascii_char #110998)

Creates an ascii character from the byte b, or returns None if it’s too large.

source

pub const unsafe fn from_u8_unchecked(b: u8) -> AsciiChar

🔬This is a nightly-only experimental API. (ascii_char #110998)

Creates an ASCII character from the byte b, without checking whether it’s valid.

§Safety

b must be in 0..=127, or else this is UB.

source

pub const fn digit(d: u8) -> Option<AsciiChar>

🔬This is a nightly-only experimental API. (ascii_char #110998)

When passed the number 0, 1, …, 9, returns the character '0', '1', …, '9' respectively.

If d >= 10, returns None.

source

pub const unsafe fn digit_unchecked(d: u8) -> AsciiChar

🔬This is a nightly-only experimental API. (ascii_char #110998)

When passed the number 0, 1, …, 9, returns the character '0', '1', …, '9' respectively, without checking that it’s in-range.

§Safety

This is immediate UB if called with d > 64.

If d >= 10 and d <= 64, this is allowed to return any value or panic. Notably, it should not be expected to return hex digits, or any other reasonable extension of the decimal digits.

(This loose safety condition is intended to simplify soundness proofs when writing code using this method, since the implementation doesn’t need something really specific, not to make those other arguments do something useful. It might be tightened before stabilization.)

source

pub const fn to_u8(self) -> u8

🔬This is a nightly-only experimental API. (ascii_char #110998)

Gets this ASCII character as a byte.

source

pub const fn to_char(self) -> char

🔬This is a nightly-only experimental API. (ascii_char #110998)

Gets this ASCII character as a char Unicode Scalar Value.

source

pub const fn as_str(&self) -> &str

🔬This is a nightly-only experimental API. (ascii_char #110998)

Views this ASCII character as a one-code-unit UTF-8 str.

Trait Implementations§

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impl Clone for AsciiChar

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fn clone(&self) -> AsciiChar

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for AsciiChar

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
1.0.0 · source§

impl Default for AsciiChar

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fn default() -> AsciiChar

Returns the default value of Null

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impl Display for AsciiChar

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl From<AsciiChar> for char

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fn from(chr: AsciiChar) -> char

Converts to this type from the input type.
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impl From<AsciiChar> for u128

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fn from(chr: AsciiChar) -> u128

Converts to this type from the input type.
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impl From<AsciiChar> for u16

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fn from(chr: AsciiChar) -> u16

Converts to this type from the input type.
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impl From<AsciiChar> for u32

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fn from(chr: AsciiChar) -> u32

Converts to this type from the input type.
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impl From<AsciiChar> for u64

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fn from(chr: AsciiChar) -> u64

Converts to this type from the input type.
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impl From<AsciiChar> for u8

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fn from(chr: AsciiChar) -> u8

Converts to this type from the input type.
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impl Hash for AsciiChar

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fn hash<__H>(&self, state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for AsciiChar

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fn cmp(&self, other: &AsciiChar) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for AsciiChar

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fn eq(&self, other: &AsciiChar) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for AsciiChar

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fn partial_cmp(&self, other: &AsciiChar) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Step for AsciiChar

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fn steps_between(_: &AsciiChar, _: &AsciiChar) -> Option<usize>

🔬This is a nightly-only experimental API. (step_trait #42168)
Returns the number of successor steps required to get from start to end. Read more
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fn forward_checked(start: AsciiChar, count: usize) -> Option<AsciiChar>

🔬This is a nightly-only experimental API. (step_trait #42168)
Returns the value that would be obtained by taking the successor of self count times. Read more
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fn backward_checked(start: AsciiChar, count: usize) -> Option<AsciiChar>

🔬This is a nightly-only experimental API. (step_trait #42168)
Returns the value that would be obtained by taking the predecessor of self count times. Read more
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unsafe fn forward_unchecked(start: AsciiChar, count: usize) -> AsciiChar

🔬This is a nightly-only experimental API. (step_trait #42168)
Returns the value that would be obtained by taking the successor of self count times. Read more
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unsafe fn backward_unchecked(start: AsciiChar, count: usize) -> AsciiChar

🔬This is a nightly-only experimental API. (step_trait #42168)
Returns the value that would be obtained by taking the predecessor of self count times. Read more
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fn forward(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait #42168)
Returns the value that would be obtained by taking the successor of self count times. Read more
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fn backward(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait #42168)
Returns the value that would be obtained by taking the predecessor of self count times. Read more
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impl Copy for AsciiChar

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impl Eq for AsciiChar

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impl StructuralPartialEq for AsciiChar

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impl TrustedStep for AsciiChar

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.