Functions and Directives Functions and Directives

Function IsUpper() Foundation

Tests whether a character string begins with an upper case letter.

Syntax
IsUpper( <cString> ) --> lUpperCase
Parameters
<cString>
<cString> is a character string expression.
Return

When the first character in <cString> is an upper case letter, IsUpper() returns the value .T. (true), otherwise it returns .F. (false).

Description

The character function IsUpper() tests whether the first character in a character string is upper case. It recognizes characters from "A" to "Z". If the first character is a digit, blank space, punctuation mark or other graphic character, IsUpper() returns the value .F. (false).

Language dependent special characters like , or identified as upper case letters when the appropriate collation table is selected.

The result depends on SET COLLATION and can be manipulated by LocaleConfigure() .

Examples
IsUpper() 
// The example shows various results of the function IsUpper(). 

PROCEDURE Main 

   ? IsUpper("Xbase++")             // result: .T. 
   ? IsUpper(" ber")                // result: .F. 
   ? IsUpper("0.nothing")           // result: .F. 
   ? IsUpper("Zeropointnothing")    // result: .T. 

RETURN
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