next up previous contents index
Next: eof,newline,null,tab Up: Character Previous: char,ord   Contents   Index


digit?,letter?,space?


Usage

digit? c
letter? c
space? c


Signature

digit?,letter?,space?: % $\to$ Boolean


Parameter Type Description
c % a character


Returns

digit?(c) returns true if c is in the range '0'-'9', false otherwise, while letter?(c) returns true if c is in the range 'a'-'z' or the range 'A'-'Z', false otherwise and space?(c) returns true if c is a blank space, i.e.a space or a tab, false otherwise.



Manuel Bronstein 2004-06-28