自由IT世界

代码高亮显示：
Ruby:

def my_ruby_snippet
     blog_post.should(be_highlighted)
end

C语言：

 for( round = 0; round < 4; round++ )
    {
    for( i = 0; i < 16; i++ )
      {
      j = (4 - (i % 4)) &amp; 0x3;  /*  handles the rotation of ABCD.          */
      s = S[round][i%4];        /*  is the bit shift for this iteration.   */

      b = ABCD[(j+1) &amp; 0x3];    /* Copy the b,c,d values per ABCD rotation.   */
      c = ABCD[(j+2) &amp; 0x3];    /* This isn't really necessary, it just looks */
      d = ABCD[(j+3) &amp; 0x3];    /* clean &amp; will hopefully be optimized away.  */

      /* The actual perumation function.
       * This is broken out to minimize the code within the switch().
       */
      switch( round )
        {
        case 0:
          /* round 1 */
          a = md5F( b, c, d ) + X[i];
          break;
        case 1:
          /* round 2 */
          a = md5G( b, c, d ) + X[ K[0][i] ];
          break;
        case 2:
          /* round 3 */
          a = md5H( b, c, d ) + X[ K[1][i] ];
          break;
        default:
          /* round 4 */
          a = md5I( b, c, d ) + X[ K[2][i] ];
          break;
        }
      a = 0xFFFFFFFF &amp; ( ABCD[j] + a + T[round][i] );
      ABCD[j] = b + (0xFFFFFFFF &amp; (( a << s ) | ( a >> (32 - s) )));
      }
    }

PHP：

function hello_world()
{
 echo "hello world"
}

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