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Function std.uni.icmp
Does case insensitive comparison of r1
and r2
.
Follows the rules of full case-folding mapping.
This includes matching as equal german ß with "ss" and
other 1:M code point mappings unlike sicmp
.
The cost of icmp
being pedantically correct is
slightly worse performance.
int icmp(S1, S2)
(
S1 r1,
S2 r2
)
if (isForwardRange!S1 && isSomeChar!(ElementEncodingType!S1) && isForwardRange!S2 && isSomeChar!(ElementEncodingType!S2));
Parameters
Name | Description |
---|---|
r1 | a forward range of characters |
r2 | a forward range of characters |
Returns
An int
that is 0 if the strings match,
<0 if str1
is lexicographically "less" than str2
,
>0 if str1
is lexicographically "greater" than str2
See Also
Example
writeln(icmp("Rußland", "Russland")); // 0
writeln(icmp("ᾩ -> \u1F70\u03B9", "\u1F61\u03B9 -> ᾲ")); // 0
Example
By using byUTF
and its aliases, GC allocations via auto-decoding
and thrown exceptions can be avoided, making icmp
@safe @nogc nothrow pure
.
import std .utf : byDchar;
writeln(icmp("Rußland" .byDchar, "Russland" .byDchar)); // 0
writeln(icmp("ᾩ -> \u1F70\u03B9" .byDchar, "\u1F61\u03B9 -> ᾲ" .byDchar)); // 0
Authors
Dmitry Olshansky
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.