isAlpha

Owned by Service Account
Last updated: Oct 22, 2021 by Jonathan Muse
1 min read

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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