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Availability
This routine is available starting with SIL Engine™ 1.0.
Syntax
isAlpha(str)
Description
Returns "true" if the provided argument str is a string containing only letters.Parameters
Parameter name | Type | Required | Description |
|---|---|---|---|
str | string | Yes | Specifies a character expression. |
Return type
boolean (true/false)
Example
Example 1
wret = isAlpha("foobar");
print(wret);
Print true
Example 2
wret = isAlpha("aaa2345f.ff");
print(wret);
Print false
Example 3
wret = isAlpha("Once upon a time ... ! ");
print(wret);
Print false
Notes
IsAlpha returns "false" if the character string str contains blanks or special characters.
See also