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String Character Length: Difference between revisions
Undo revision 7913 by Special:Contributions/SdqZt5 (User talk:SdqZt5)
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(Undo revision 7913 by Special:Contributions/SdqZt5 (User talk:SdqZt5)) |
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{{task}}
{{Template:split-review}}
In this task, the goal is to find the <em>character</em> length of a string. This means encodings like [[UTF-8]] need to be handled properly, as there is not necessarily a one-to-one relationship between bytes and characters.
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char *p = (char *) string;
while (*p
return 0;
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}
==[[C plus plus|C
[[Category:C plus plus|C
'''Standard:''' [[ISO C plus plus|ISO C
'''Compiler:''' g
#include <string> // note: '''not''' <string.h>
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'''Platform:''' [[.NET]]
'''Language Version:''' 1.0
string s = "Hello, world!";
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binary
: utf8
begin
char
dup c@
11000000 and
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swap dup c@
while
utf8
swap 1
repeat drop ;
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Since Java 1.5, the actual number of characters can be determined by calling the codePointCount method.
String str = "\uD834\uDD2A"; //U
int length1 = str.length(); //2
int length2 = str.codePointCount(0, str.length()); //1
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var len1 = str1.length; //13
var str2 = "\uD834\uDD2A"; //U
var len2 = str2.length; //2
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