HasAlphaNumeric - Maple Help

# Online Help

###### All Products    Maple    MapleSim

StringTools

 HasAlphaNumeric
 determine if a string has either alphabetic or decimal digit characters

 Calling Sequence HasAlphaNumeric(s)

Parameters

 s - string; string to test

Description

 • The HasAlphaNumeric(s) command determines whether s has alphanumeric characters. That is, whether it has either alphabetic or decimal digit characters. A character is alphabetic if it is either upper or lowercase. A character is a decimal digit if it is one of the following:

 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

 If s has at least one alphanumeric character, HasAlphaNumeric returns true. Otherwise, false is returned.
 • 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[HasAlphaNumeric] command is thread-safe as of Maple 15.
 • For more information on thread safety, see index/threadsafe.

Examples

 > $\mathrm{with}\left(\mathrm{StringTools}\right):$
 > $s≔\mathrm{Random}\left(30,";:,#%&"\right)$
 ${s}{≔}{",%;&,&&,:%#,##:,:#%::%%#%:;;"}$ (1)
 > $\mathrm{HasAlphaNumeric}\left(s\right)$
 ${\mathrm{false}}$ (2)
 > $s≔\mathrm{Random}\left(30,";:,123abc&"\right)$
 ${s}{≔}{"1,23cbaac3b:c111;:bb122,b;c&"}$ (3)
 > $\mathrm{HasAlphaNumeric}\left(s\right)$
 ${\mathrm{true}}$ (4)
 > $\mathrm{HasAlphaNumeric}\left(\mathrm{Random}\left(1000\right)\right)$
 ${\mathrm{true}}$ (5)

 See Also