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Excerpt

This example demonstrates functions that can be used to compare two sets of strings.

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Functions:

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D generate list excerpts
pagesSTRINGGREATERTHAN Function,STRINGGREATERTHANEQUAL Function,STRINGLESSTHAN Function,STRINGLESSTHANEQUAL Function,EXACT Function

Source:

The following table contains some example strings to be compared. 

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rowIdstringAstringBlessThanEquallessThangreaterThanEqualgreaterThanexactEqualNotes
1aatruefalsetruefalsetrueEvaluation of differences between STRINGLESSTHAN and STRINGGREATERTHAN and greater than versions.
2aAtruetruefalsefalsefalseComparisons are case-sensitive. Uppercase letters are greater than lowercase letters.
3abtruetruefalsefalsefalse
Letters later in the alphabet (b) are greater than earlier letters (a).
4a1falsefalse
true true false
Letters (a) are greater than digits (1).
5a;falsefalsetruetruefalseLetters (a) are greater than non-alphanumerics (;).
6;1truetruefalsefalsefalse

Digits (1) are greater than non-alphanumerics (;). Therefore, the following characters are listed in order of evaluation:

Code Block
Aa1;
7a afalsefalsetruetruefalseLetters (and any non-breaking character) are greater than space values.
8aaatruetruefalsefalsefalseThe second string is greater, since it contains one additional string at the end.
9abcxtruetruefalsefalsefalseThe second string is greater, since its first letter is greater than the first letter of the first string.

D s also
labelexample_string_comparison_functions