Extract integer value i from its binary string representation s (in radix 2)
E.g. "1101" -> 13
New implementation

Be concise.

Be useful.

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Please do not paste any copyright violating material.

Please try to avoid dependencies to third-party libraries and frameworks.

Other implementations
(def i (read-string (str "2r" s)))
#include <string>
int i = std::stoi(s, nullptr, 2);
var i = int.parse(s, radix: 2);
character (len=:), allocatable :: s
integer :: i  
s = '1101'
read (s,'(B4)') i

import "strconv"
i, err := strconv.ParseInt(s, 2, 0)
const i = parseInt(s, 2)
Integer i = Integer.valueOf(s, 2);
import java.math.BigInteger;
int i = new BigInteger(s, 2).intValue();
$i = bindec($s);
uses SysUtils;
i := StrToInt('%'+s);
$i = oct('0b' . $s);
i = int(s, 2)
i = s.to_i(2)
let i = i32::from_str_radix(s, 2).expect("Not a binary number!");