Character Type Library 1.10.1

#include <std/ctype.pat>

This namespace contains trait functions to inspect ASCII characters

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Functions

std::ctype::isdigit(char c) -> bool 1.10.1

Checks if the character parameter “c” is a ASCII digit

Parameter	Description
c	Character
return	True if character is a decimal ASCII digit (0 to 9)

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std::ctype::isxdigit(char c) -> bool 1.10.1

Checks if the character parameter “c” is a hexadecimal ASCII digit

Parameter	Description
c	Character
return	True if character is a hexadecimal ASCII digit (0 to 9, a to f or A to F)

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std::ctype::isupper(char c) -> bool 1.10.1

Checks if the character parameter “c” is a uppercase ASCII letter

Parameter	Description
c	Character
return	True if character is a uppercase ASCII letter (A to Z)

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std::ctype::islower(char c) -> bool 1.10.1

Checks if the character parameter “c” is a lowercase ASCII letter

Parameter	Description
c	Character
return	True if character is a lowercase ASCII letter (a to z)

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std::ctype::isalpha(char c) -> bool 1.10.1

Checks if the character parameter “c” is a ASCII letter

Parameter	Description
c	Character
return	True if character is a ASCII letter (A to Z or a to z)

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std::ctype::isalnum(char c) -> bool 1.10.1

Checks if the character parameter “c” is a ASCII letter or digit

Parameter	Description
c	Character
return	True if character is a ASCII letter or digit (0 to 9, A to Z or a to z)

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std::ctype::isspace(char c) -> bool 1.10.1

Checks if the character parameter “c” is a ASCII whitespace character

Parameter	Description
c	Character
return	True if character is a ASCII whitespace character (0x20, 0x09, 0x0A, 0x0B, 0x0C or 0x0D)

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std::ctype::isblank(char c) -> bool 1.10.1

Checks if the character parameter “c” is a blank ASCII character

Parameter	Description
c	Character
return	True if character is a blank ASCII character (Space or Tab)

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std::ctype::isprint(char c) -> bool 1.10.1

Checks if the character parameter “c” is a printable ASCII character

Parameter	Description
c	Character
return	True if character has a printable symbol (all non-control characters)

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std::ctype::iscntrl(char c) -> bool 1.10.1

Checks if the character parameter “c” is a ASCII control character

Parameter	Description
c	Character
return	True if character is a control character

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std::ctype::isgraph(char c) -> bool 1.10.1

Checks if the character parameter “c” is a ASCII character with a graphical representation

Parameter	Description
c	Character
return	True if character has a printable symbol (all printable characters except space characters)

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std::ctype::ispunct(char c) -> bool 1.10.1

Checks if the character parameter “c” is a ASCII punctuation character

Parameter	Description
c	Character
return	True if character is a ASCII punctuation character (one of !"#$%&'()*+,-./:;<=>[email protected][\]^_`{|}~)