IsSpace - Maple Help

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StringTools

 IsSpace
 determine if a character is a space character

 Calling Sequence IsSpace(char)

Parameters

 char - string; character to test

Description

 • The IsSpace(char) command determines whether char is a space character.
 A space character is any one of the following:

 Space Character Meaning ASCII Code  '' space 32 \t'' horizontal tab 9 \n'' new line 10 \r'' carriage return 13 \f'' form feed 12 \v'' vertical tab 11

 If char is a space character, IsSpace returns true. Otherwise, false is returned.
 • If char is a string that contains more than one character, then all the characters in the string are tested. The command returns true if the condition is true of all characters in the input string. For the empty string, the tested condition is vacuously true.
 • All of the StringTools package commands treat strings as (null-terminated) sequences of $8$-bit (ASCII) characters.  Thus, there is no support for multibyte character encodings, such as unicode encodings.

Thread Safety

 • The StringTools[IsSpace] command is thread-safe as of Maple 15.
 • For more information on thread safety, see index/threadsafe.

Examples

 > $\mathrm{with}\left(\mathrm{StringTools}\right):$
 > $s≔\mathrm{convert}\left(\left[\mathrm{}\left(1..255\right)\right],'\mathrm{bytes}'\right):$
 > $\mathrm{length}\left(s\right)$
 ${255}$ (1)

Important Note: The user should take care if attempting to copy the following example into a Maple session.  Since the output from the following command contains control characters, unexpected results can occur on certain platforms. It is recommended that this example not be copied.

 > $\mathrm{Select}\left(\mathrm{IsSpace},s\right)$
 ${"\t\n\v\f\r"}$ (2)

 See Also