double func_atof(char *p){
	double	 integer = 0.0, div = 1.0 , fract = 0.0 , sign = 1.0;
   if(   *p == 45  ){sign = -1.0, *p++ ; }
	while ( isdigit(*p)  ) { 
		integer = ( *p++ )  +  (10.0   *   integer)  -  48.0 ; 
		}
	if(*p == 46  ){
	(*p++ ) ;
	while (  isdigit(*p) )  {
		fract = ( *p++ )  +  (10.0   *   fract)  -  48.0  ; 
		div *= 10;		
		}
    }
  return    (integer  +   fract  / div )  * sign    ;
}
By Lazy_8, 2020-01-13 16:53:53
if (!response ||
    !response.data ||
    !response.data.success ||
    response.data.success == false ) {
        //process stuff
}

Not talking about the '===' warning, here

By Anonymous, 2020-12-02 12:31:00
if (isLink($content[$i][$j])) {

					if (isImageLink($content[$i][$j])) {

						$image_src = create_image($content[$i][$j], "img");

						$cell = <<<HTML
							<td>
								<img {$image_src} {$img_style}></td></img>
							</td>
HTML;
					} else if (isNestedLink($content[$i][$j])) {

						$links = explode("!", $content[$i][$j]);

						$cell = <<<HTML
							<td><a style="color: {$cards_button_bg_color};" href="{$links[1]}" $open_links_in >{$links[0]}</a></td>
HTML;
					} else {
						
						//Checking if it's a link or a button

							if ($j == $table_button_column) {
														
							//Button HTML
								$table_button_text = explode("-", $content[0][$j])[0];

								$cell = <<<HTML
									<td><a {$open_links_in} href="{$content[$i][$j]}" style="background-color: {$cards_button_bg_color}; color: {$cards_button_text_color};" class="btn">{$table_button_text}</a></td>
HTML;
							} else {
							
							// Link HTML			
								$cell = <<<HTML
									<td><a style="color: {$cards_button_bg_color};" href="{$content[$i][$j]}" $open_links_in >{$content[0][$j]}</a></td>
HTML;
							}
					}
By PHPhillip, 2020-06-09 23:28:49
FOR x IN ( SELECT COUNT(*) cnt
            FROM DUAL
           WHERE EXISTS ( SELECT NULL FROM task
                           WHERE task.task_type_id = lib.task_type_check()
                             AND task.task_status_id = lib.task_status_open()
                             AND task.unit_id = in_unit_id
                             AND task.station_id = v_station_id
                        )
         )
LOOP
  IF( x.cnt = 1 ) THEN
    v_task_exist := TRUE;
  ELSE
    v_task_exist := FALSE;
  END IF;
END LOOP;
By Anonymous, 2019-08-01 15:25:36
val weekEnd = DateTime.now.withDayOfWeek(5).plusDays(2)
By Anonymous, 2017-12-22 13:55:37
cd /some/directory
rm -rf *

I regularly see these two lines in Bash scripts I don't understand but some programmers think you need a CD command before any command, and they also don't know that paths can be part of parameters (which explains why they use many CD commands)

By Meeeeee, 2023-01-25 16:50:10
ngOnInit() {
    this._FunctionService.getSicksList().then(res => {
        let resf:any = res;
        if (resf.err) {
        } else {
            this.diagnosticAll = resf.data
        }
    }, err => { })
}
/*
ngOnInit() {
    this._FunctionService.getSicksList().then(res => {
        this.diagnosticAll = res.data
    }, err => { })
}
*/
By ElkinDev, 2019-06-27 15:18:41
    public static class DecimalHelpers
    {
        /// <summary>
        /// Format a decimal XX.XX to XX,XX%.
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static string FormatToStringPercentageValue(this decimal value)
        {
            return value.ToString().Replace(".", ",").FormatToPercentageValue();
        }
    }
    
    public static class StringHelpers
    {
        /// <summary>
        /// Add % at the end of the string.
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static string FormatToPercentageValue(this string value)
        {
            return string.Concat(value, "%");
        }
    }
By Anonymous, 2017-12-12 10:58:38
<h1 className="sidebar-text">
	<h1 className="sidebar-text">My Applauses</h1>
</h1>

How do you even miss this... the Console will literally complain in red to you...

By Mr Verster, 2022-04-07 16:53:40
#265 PHP +19
if((strtotime(date("Y-m-d"))-strtotime(date("Y-m-d", filemtime($filename))))/(3600)<=$config->hourDiff) return true; else return false;

please notice the brackets around 3600

By Anonymous, 2018-03-13 21:56:00
    if (model.env.Trim().ToUpper() == "Release")
    {
        retVal = false;
        if (!string.IsNullOrEmpty(model.Server_Core))
        {
            // Perform a trim in case user specified just whitespace...
            string tmpStr = model.Server_Core.Trim();
            if (!string.IsNullOrEmpty(tmpStr))
            {
                retVal = true;
            }
        }
    }
By Anonymous, 2019-02-25 17:12:31
const handleBoolean = value => {
        switch (value) {
            case "true":
                return true;
            case true:
                return "true";
            case "false":
                return false;
            case false:
                return "false"
            default:
                return null;
        }
    }
By Ifncn, 2022-01-27 07:49:16
local Plr = game.Players.LocalPlayer

for i,v in pairs(game.ReplicatedStorage.DataStorage[Plr.Name].Data["Slot1"].AccessoriesList:GetChildren()) do
v.Value = "Unlocked"
end
for i,v in pairs(game.ReplicatedStorage.DataStorage[Plr.Name].Data["Slot1"].StanceList:GetChildren()) do
v.Value = "Unlocked"
end
for i,v in pairs(game.ReplicatedStorage.DataStorage[Plr.Name].Data["Slot1"].RunningList:GetChildren()) do
v.Value = "Unlocked"
end
for i,v in pairs(game.ReplicatedStorage.DataStorage[Plr.Name].Data["Slot1"].FlyingList:GetChildren()) do
v.Value = "Unlocked"
end
for i,v in pairs(game.ReplicatedStorage.DataStorage[Plr.Name].Data["Slot1"].FightingStyles:GetChildren()) do
v.Value = "Unlocked"
end
for i,v in pairs(game.ReplicatedStorage.DataStorage[Plr.Name].Data["Slot1"].MoveList:GetChildren()) do
v.Value = "Unlocked"
end
for i,v in pairs(game.ReplicatedStorage.DataStorage[Plr.Name].Data["Slot1"].ClothingList:GetChildren()) do
v.Value = "Unlocked"
end

Bad unlock script for Roblox

By JayRain, 2020-03-14 03:01:24
int true = 0;
while (true)
{
    //do something
}

true = false

By noz1995, 2017-12-15 16:08:59
case ClientMessage:    
    if (*XGetAtomName(GLWin.dpy, event.xclient.message_type)
        == *"WM_PROTOCOLS")
        {   printf("Exiting sanely...\n");
            done = True;
        }
    break;

someone just want to watch the world burn

By Anonymous, 2018-01-07 13:01:05