protected void EnableEditButtons(bool Value)
{
    if (Value == false)
    {
        buttonAdd.Disabled = true;
        buttonDelete.Disabled = true;
    }
    else
    {
        buttonAdd.Disabled = false;
        buttonDelete.Disabled = false;
    }
}

// ...

if (IsEditable(ID))
    EnableEditButtons(true);
else
    EnableEditButtons(false);

I found this old code in an app I was updating for a client a number of years back. It was so good I documented it on my own blog.

By Jon Hartmann, 2017-12-12 17:09:54
for data1, data2 in zip(results, results[1:]):
    assert data1 <= data1
    if data1 == data1:
        assert data1 >= data1

A nice loop for making sure that data1 is equal to data1!

By 1133, 2018-12-10 14:43:50
def copy( variable ):
    return variable

Decade old code, used in 2 places to "copy" a float and a string. No one wants to touch the working code.

By Anonymous, 2017-12-12 13:46:40
#139 HTML +60
<img src="../../../../../../../../../../../../../../../../../assets/logo.png" /> 
By Anonymous, 2017-12-12 20:59:00
if( %rightBtnCmd $= "noButtons" )
{
    //do nothing, as there are no buttons   
}

proprietary script language.

By Anonymous, 2017-12-14 19:52:22
// Is this valid?
function validateStockInItems() {
    if (stockInItemsToUpdate.length === 0)
        return true;
    return true;
}

Found in a legacy code base for a stock management system. I will be rewriting said system soon.

By Anonymous, 2017-12-13 09:15:42
int my_array[] = {
#include "data.txt"
};
By Anonymous, 2017-12-12 01:45:55
int length = 0;
for(int idx = 0; idx < a.length; i++) {
     length++;
}
System.out.println("length is : " + length);
By Slacki, 2015-07-22 14:25:02
17 *	* * *	root	[[ $(ping -c1 8.8.8.8 | tail -n2 | head -n1 | cut -d"," -f2 | cut -d" " -f2) != "1" ]] && { { /etc/init.d/networking restart && /etc/init.d/network-manager restart && curl "https://api.telegram.org/XXX:XXX/sendMessage?chat_id=XXX&text=\%22networking\%20and\%20network-manager\%20restarted\%22" ;} && { wget -O /dev/null -o /dev/null https://nyifiles.pfsense.org/mirror/downloads/pfSense-CE-2.3.5-RELEASE-2g-i386-nanobsd.img.gz && curl "https://api.telegram.org/XXX:XXX/sendMessage?chat_id=XXX&text=\%22wget\%20download\%20OK\%22" || curl "https://api.telegram.org/XXX:XXX/sendMessage?chat_id=XXX&text=\%22wget\%20download\%20KO\%22" ;} ;}

With me! Sing! It's gonna ping! If not it's gonna restart the net! If yes is gonna send you a text! And then is gonna download a file, just to check!

By AnonimaBazhi, 2018-12-04 19:33:23
if (isset(self::$proposals[$view])) {
      $best_proposals = [];
      $all_sources = [];
      foreach (self::$proposals[$view] as $proposal_source => $proposal) {
        if (!isset($this->backend_branch) || substr($this->backend_branch, 0, 11) != "adjust-for:" || substr($this->backend_branch, 11) == $proposal_source) {
          if ($proposal['orig_base'] == $curr_base || $relax_checking) {
            $age = time() - $proposal['updated_at'];
            if ($age < self::MAX_AGE) {
              foreach ($proposal['proposals'] as $proposal_label => $proposal_price) {
                if (!in_array($proposal_label, [self::SK_LABEL_AVIASALES, self::SK_LABEL_SKYSCANNER, self::SK_LABEL_YANDEX, self::SK_LABEL_MOMONDO])) {
                  $proposal_key = $proposal_label;
                  if (!isset($best_proposals[$proposal_key]) || $best_proposals[$proposal_key]['price'] > $proposal_price) {
                    $best_proposals[$proposal_key] = [
                      'price' => $proposal_price,
                      'name' => $proposal_price . "@" . implode("~", array_map(function ($part) {
                          return preg_replace('/[~|=#@ ]/', '_', $part);
                        }, [
                          'label' => $proposal_label,
                          'source' => $proposal_source,
                        ])),
                      'age' => $age,
                    ];
                    $all_sources[$proposal_source] = null;
                  }
                }
              }
            }
          }
        }
      }
By Anonymous, 2018-01-24 12:49:44
...
if (alignEntrySize & 1)
    alignEntrySize++;
if (alignEntrySize & 2)
    alignEntrySize += 2;
...
By dzuma, 2018-02-08 18:19:17
try:
    self._update_plan()
except Exception as e:
    raise Exception('{0}'.format(e))

RIP debuggability

By Anonymous, 2017-12-12 05:22:22
o.isInsured = function ()
{ return !!this.insured; }

Why don't be like normal people and use bool() cast?

By Anonymous, 2018-09-22 14:31:37
<?php

$payload = '{ "products": [';
foreach ($products as $product) {
    $payload .= $product->toJson() . ',';
}
$payload = substr($payload, 0, \strlen($payload) - 1);
$payload .= ']}';
By sijolas, 2019-03-15 14:47:06
<?
function null($null) {
    return null;   
}
By SH2, 2018-02-20 11:31:33