JCL Help:StrIsSubset@AnsiString@TSysCharSet

 JCL Help: StrIsSubset Function

JCL Functions

► JclAnsiStrings.pas Functions

[+] JclAnsiStrings.pas Functions

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Summary

Tests whether S contains only characters from the supplied set.

Pascal

 function StrIsSubset(const S: string; const ValidChars: TCharValidator): Boolean; overload;
function StrIsSubset(const S: string; const ValidChars: array of Char): Boolean; overload;
function StrIsSubset(const S: AnsiString; const ValidChars: TSysCharSet): Boolean;

Parameters

Parameters	Description
const S: string	The string to test.
const ValidChars: TCharValidator	The set of characters allowed in S.

Return Value

If the string contains only characters from the supplied set the result is True, otherwise the result is False.

Description

StrIsSubset tests whether the supplied string contains only characters from the supplied character set. Keep in mind that the test is case-sensitive.

About

Unit

JclAnsiStrings

Donator

Marcel van Brakel

Notes

If the supplied string is empty, the result is always True. If the supplied character set is empty, the result is always False. Empty string overules empty set.

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