1 개요[ | ]
- charAt
- characterAtIndex
- Returns character at index in the string.
- Equivalent: See substring of length 1 character.
2 ALGOL 68[ | ]
html
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"Hello, World"[2]; // 'e'
3 C++[ | ]
C++ .at() 문서를 참고하십시오.
C++
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#include <iostream>
using namespace std;
int main() {
string s = "World";
cout << s.at(0) << endl; // W
cout << s.at(1) << endl; // o
cout << s.at(2) << endl; // r
}
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4 C#[ | ]
C#
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string str = "Hello, World";
char ch = str[1];
// 'e'
5 Excel[ | ]
PHP
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=MID("hello",1,1)
// h
=MID("hello",2,1)
// e
=MID("hello",3,1)
// l
6 Go[ | ]
Go charAt() 문서를 참고하십시오.
Go
Copy
package main
import "fmt"
func main() {
s := "Hello, 世界"
fmt.Println(s[0]) // 72
fmt.Println(string(s[0])) // H
fmt.Printf("%c\n", s[0]) // H
}
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7 Java[ | ]
Java
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String str = "Hello, World";
str.charAt(2); // 'l'
8 JavaScript[ | ]
JavaScript
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var str = "Hello, World";
console.log( str.charAt(7) ); // W
▶ | W |
9 Objective-C[ | ]
Objective-C
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#define CHAR_AT(str, n) [str substringWithRange:NSMakeRange(n,1)]
NSString* ch = CHAR_AT(@"A가★あ中", 2);
NSLog(@"%@", ch); // ★
Objective-C
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NSString* str = @"A가★あ中";
unichar ch = [str characterAtIndex:2];
NSLog(@"%C", ch); // ★
10 Pascal[ | ]
pascal
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var
MyStr: string = 'Hello, World';
MyChar: Char;
begin
MyChar := MyStr[2]; // 'e'
11 Perl[ | ]
Perl
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$str = 'Hello, World';
substr($str, 2, 1); # 'l'
substr($str, -3, 1); # 'r'
12 PHP[ | ]
PHP
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$str = "Hello";
echo $str[1]; // e
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13 Python[ | ]
Python
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print( "Hello, World"[2] ) # l
print( "Hello, World"[-3] ) # r
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14 Ruby[ | ]
Ruby
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print "Hello, World"[2] # l
print "Hello, World"[-3] # r
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15 Smalltalk[ | ]
smalltalk
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'Hello, World' at: 2. "$e"
16 VB[ | ]
vbnet
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GetChar("Hello, World", 2) ' "e"
17 VB.NET[ | ]
vbnet
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"Hello, World".Chars(2) ' "l"