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StringTools

  

IsIdentifier

  

determine if a character is valid in an unquoted Maple identifier

  

IsIdentifier1

  

determine if a character is valid as the first character of an unquoted Maple identifier

 

Calling Sequence

Parameters

Description

Thread Safety

Examples

Calling Sequence

IsIdentifier(char)

IsIdentifier1(char)

Parameters

char

-

string; character to test

Description

• 

The IsIdentifier(char) command determines whether char is valid as a character in an unquoted Maple identifier.

  

If char is a valid character, IsIdentifier returns true. Otherwise, false is returned.

• 

The IsIdentifier1(char) command determines whether char is valid as the first character of an unquoted Maple identifier.

  

If char is valid as the first character, IsIdentifier1 returns true. Otherwise, false is returned.

• 

For these functions, if char is a string that contains more than one character, then all the characters in the string are tested. The commands returns true if the condition is true of all characters in the input string. For the empty string, the tested condition is vacuously true.

Thread Safety

• 

The StringTools[IsIdentifier] command is thread-safe as of Maple 15.

• 

For more information on thread safety, see index/threadsafe.

Examples

withStringTools:

sconvert`$`1..255,'bytes':

lengths

255

(1)

SelectIsIdentifier,s

0123456789?ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz

(2)

SelectIsIdentifier1,s

%ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz

(3)

IsIdentifiermyproc

true

(4)

IsIdentifierthis/that

false

(5)

See Also

convert

length

name

string

StringTools

StringTools[HasIdentifier1]

StringTools[HasIdentifier]

StringTools[Select]