st98

#include <stdio.h>

int _abs(int n) {
  return n & (1 << (sizeof(int) << 3 - 1)) ? ~n + 1 : n;
}

int main(void) {
  printf("_abs(%d) = %d\n", -12, _abs(-12));
  return 0;
}

st98

Number.prototype.step = function (limit, step, callback) {
  var n = Number(this);

  if (typeof step === 'function') {
    callback = step;
    step = 1;
  }

  while (n <= limit) {
    callback(n);

st98

p %r...source

st98

#include <stdio.h>

int main(void) {
  int a[5] = {
    1, 0, 5
  };

  int b[5] = {
    [0] = 1,
    [2] = 5

st98

randint = (max = 2) ->
  return Math.floor Math.random() * max

[s, i] = [[], 10]
s.push randint() while i-- > 0

console.log s.join ', '

st98

String::ljust = (len = @length, ch = ' ') ->
  result = this

  while result.length < len
    result += ch

  return result

st98

# ref. http://stackoverflow.com/a/6521513
Array::longest = ->
  return @reduce ((prev, curr) -> return if prev > curr.length then prev else curr.length), 0

st98

String.prototype.n文字ごとに文字列を挿入する = function (n, str) {
  if (n == null || str == null) {
    return String(this);
  }

  return this.replace(new RegExp('.{' + n + '}', 'g'), function (m) {
    return m + str;
  });
};

st98

String.prototype.title = function () {
  return this.replace(/[A-Za-z]+/g, function (m) {
    return m[0].toUpperCase() + m.slice(1).toLowerCase();
  });
};

st98

'hoge'.charAt(3); // => 'e'
'hoge'[3];        // => 'e'

'hoge'.charAt(4); // => ''
'hoge'[4];        // => undefined