Display the source code in std/ascii.d from which this page was generated on github.

If you spot a problem with this page, click here to create a Bugzilla issue.

Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone.

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.


Category	Functions
Validation	`isAlpha` `isAlphaNum` `isASCII` `isControl` `isDigit` `isGraphical` `isHexDigit` `isOctalDigit` `isPrintable` `isPunctuation` `isUpper` `isWhite`
Conversions	`toLower` `toUpper`
Constants	`digits` `fullHexDigits` `hexDigits` `letters` `lowercase` `lowerHexDigits` `newline` `octalDigits` `uppercase` `whitespace`
Enums	`ControlChar` `LetterCase`

References

ASCII Table, Wikipedia

Functions

Name	Description
`isAlpha(c)`
`isAlphaNum(c)`
`isASCII(c)`
`isControl(c)`
`isDigit(c)`
`isGraphical(c)`
`isHexDigit(c)`
`isLower(c)`
`isOctalDigit(c)`
`isPrintable(c)`
`isPunctuation(c)`
`isUpper(c)`
`isWhite(c)`
`toLower(c)`	Converts an ASCII letter to lowercase.
`toUpper(c)`	Converts an ASCII letter to uppercase.

Enums

Name	Description
`ControlChar`	All control characters in the ASCII table (source).
`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

License

Boost License 1.0.