String length 편집하기

[[category:string]]
[[category:int]]

==Overview==
*len
*length
*strlen

*Definition: length(string) returns an integer number 
*Description: Returns the length of a string (not counting the null terminator or any other of the string's internal structural information). An empty string returns a length of 0.

==Bash==
[[category:Bash]]
<source lang='bash'>
LENGTH=`expr length "hello"`
echo $LENGTH
# 5
</source>

==C#==
[[category: Csharp]]
<source lang="csharp">
"hello".Length;      // returns 5
"".Length;           // returns 0
</source>

==Erlang==
[[category: Erlang]]
<source lang="text">
string:len("hello"). %  returns 5
string:len("").      %  returns 0
</source>

==Java==
[[category: Java]]
<source lang="java">
"hello".length()   // returns 5
"".length()        // returns 0
</source>

==Javascript==
[[category: Javascript]]
<source lang='javascript'>
var txt = "Hello World!";
var len = txt.length; // 12
</source>

==Lua==
[[category: Lua]]
<source lang="lua">
("hello"):len() -- returns 5
#"" -- returns 0
</source>

==Objective-C==
[[category: Objective-C]]
<source lang="objc">
[@"hello" length]   // returns 5
[@"" length]        // returns 0
</source>

==Perl==
[[category: Perl]]
<source lang="perl">
length("hello");     #  returns 5
length("");          #  returns 0
</source>

==PHP==
[[category: PHP]]
<source lang="php">
strlen('hello');     //  returns 5
strlen('');          //  returns 0
</source>

==Python==
[[category: Python]]
<source lang="python">
len('hello')     #  returns 5
len('')          #  returns 0
</source>

==Ruby==
[[category: Ruby]]
<source lang="ruby">
'hello'.length     #  returns 5
''.length          #  returns 0
</source>

==SQL==
[[category: SQL]]
===MySQL===
[[category: MySQL]]
<source lang='sql'>
SELECT LENGTH( "hello" )
-- 5
</source>

==VB==
[[category: VB]]
<source lang="vb">
Len("hello")         '  returns 5
Len("")              '  returns 0
</source>

==See also==
*[[utf8_strlen]]
*[[count]]
*[[substring]]

==References==
* http://eqcode.com/wiki/string_length