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Module std.ascii
Functions which operate on ASCII characters.
All of the functions in std.ascii accept Unicode characters but
effectively ignore them if they're not ASCII. All isX functions return
false for non-ASCII characters, and all toX functions do nothing
to non-ASCII characters.
For functions which operate on Unicode characters, see
std.uni.
References
Functions
| Name | Description |
|---|---|
isAlpha
|
|
isAlphaNum
|
|
isASCII
|
|
isControl
|
|
isDigit
|
|
isGraphical
|
|
isHexDigit
|
|
isLower
|
|
isOctalDigit
|
|
isPrintable
|
|
isPunctuation
|
|
isUpper
|
|
isWhite
|
|
toLower
|
Converts an ASCII letter to lowercase.
|
toUpper
|
Converts an ASCII letter to uppercase.
|
Enums
| Name | Description |
|---|---|
LetterCase
|
Letter case specifier. |
Global variables
| Name | Type | Description |
|---|---|---|
digits
|
immutable(char[])
|
0..9 |
fullHexDigits
|
immutable(char[])
|
0..9A..Fa..f |
hexDigits
|
immutable(char[])
|
0..9A..F |
letters
|
immutable(char[])
|
A..Za..z |
lowercase
|
immutable(char[])
|
a..z |
lowerHexDigits
|
immutable(char[])
|
0..9a..f |
newline
|
immutable(char[])
|
Newline sequence for this system. |
octalDigits
|
immutable(char[])
|
0..7 |
uppercase
|
immutable(char[])
|
A..Z |
whitespace
|
immutable(char[])
|
ASCII whitespace |
Authors
Walter Bright and Jonathan M Davis