View source code
Display the source code in std/ascii.d from which this page was generated on github.
Report a bug
If you spot a problem with this page, click here to create a Bugzilla issue.
Improve this page
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.

References

ASCII Table, Wikipedia

Functions

NameDescription
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

NameDescription
ControlChar All control characters in the ASCII table (source).
LetterCase Letter case specifier.

Global variables

NameTypeDescription
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.