isUpper

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Last updated: Oct 22, 2021 by Jonathan Muse

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Availability

This routine is available starting with SIL Engine™ 1.0.

Syntax

isUpper(str)

Description

Returns "true" if the provided argument str is a string containing only upper letters.

Parameters

Parameter name

Type

Required

Description

str

string

Yes

Specifies a character expression.

Return type

boolean (true/false)

Example

Example 1

wret = isUpper("FOOBAR");
print(wret);

Print true

Example 2

wret = isUpper("aAA2345f.FF");
print(wret);

Print false

Example 3

wret = isUpper("");
print(wret);

Print false

Notes

isUpper returns "false" if the character string str contains blanks or special characters or is a null string.

See also