const ITEM_COUNT = 100
let visibleItems = []
for (let i = 0; i < ITEM_COUNT; ++i) {
  visibleItems.push(false)
}

function showItem(index) {
  visibleItems = []
  for (let i = 0; i < ITEM_COUNT; ++i) {
    visibleItems.push(false)
  }
  visibleItems[index] = true
}

It was more or less like this. The guy had a collection of React components and wanted to show only one of them at a time. Instead of storing the index of the component to show at the moment, he decided that a boolean array would work much better. O(n) in runtime and space and null readability just because.

By Anonymous, 2019-12-07 11:59:58
function downScaleCanvas(a, b) {
    var c = Math.ceil,
        d = Math.floor;
    if (!(1 > b) || !(0 < b)) throw "scale must be a positive number <1 ";
    var e = b * b,
        f = a.width,
        g = a.height,
        h = d(f * b),
        i = d(g * b),
        j = 0,
        k = 0,
        l = 0,
        m = 0,
        n = 0,
        o = 0,
        p = 0,
        q = 0,
        r = 0,
        s = 0,
        t = 0,
        u = 0,
        v = 0,
        x = 0,
        y = 0,
        z = !1,
        A = !1,
        B = a.getContext("2d").getImageData(0, 0, f, g).data,
        C = new Float32Array(3 * h * i),
        D = 0,
        E = 0,
        F = 0;
    for (k = 0; k < g; k++)
        for (n = k * b, r = 0 | n, o = 3 * r * h, A = r != (0 | n + b), A && (x = r + 1 - n, y = n + b - r - 1), j = 0; j < f; j++, l += 4) m = j * b, q = 0 | m, p = o + 3 * q, z = q != (0 | m + b), z && (u = q + 1 - m, v = m + b - q - 1), D = B[l], E = B[l + 1], F = B[l + 2], z || A ? z && !A ? (s = u * b, C[p] += D * s, C[p + 1] += E * s, C[p + 2] += F * s, t = v * b, C[p + 3] += D * t, C[p + 4] += E * t, C[p + 5] += F * t) : A && !z ? (s = x * b, C[p] += D * s, C[p + 1] += E * s, C[p + 2] += F * s, t = y * b, C[p + 3 * h] += D * t, C[p + 3 * h + 1] += E * t, C[p + 3 * h + 2] += F * t) : (s = u * x, C[p] += D * s, C[p + 1] += E * s, C[p + 2] += F * s, t = v * x, C[p + 3] += D * t, C[p + 4] += E * t, C[p + 5] += F * t, t = u * y, C[p + 3 * h] += D * t, C[p + 3 * h + 1] += E * t, C[p + 3 * h + 2] += F * t, t = v * y, C[p + 3 * h + 3] += D * t, C[p + 3 * h + 4] += E * t, C[p + 3 * h + 5] += F * t) : (C[p] += D * e, C[p + 1] += E * e, C[p + 2] += F * e);
    var G = document.createElement("canvas");
    G.width = h, G.height = i;
    var H = G.getContext("2d"),
        I = H.getImageData(0, 0, h, i),
        J = I.data,
        K = 0;
    for (l = 0, p = 0; K < h * i; l += 3, p += 4, K++) J[p] = c(C[l]), J[p + 1] = c(C[l + 1]), J[p + 2] = c(C[l + 2]), J[p + 3] = 255;
    return H.putImageData(I, 0, 0), G
}

dohhhhhh !!

By fotogena.co sonickseven, 2019-10-13 00:10:25
scrollToEl($el.parent().parent().parent());

Someones idea of how to select an element to scroll to.... Please no.

By Anonymous, 2019-09-27 15:20:17
// Save the files for 100 timea in case failed

try {
    for (let i; i <= 100; i++) {
        File.save();
    }
} catch (e) {
    // Save the files for 100 timea since it already failed
    for (let i; i <= 100; i++) {
        File.save();
    }
}
By Anonymous, 2019-09-09 18:23:39
const allowed = {
    '1': true,
    '2': true,
    '3': true,
    '4': true,
    '5': true,
    '6': true,
    '7': true,
    '8': true,
    '9': true,
    '0': true,
    'ArrowLeft': true,
    'ArrowDown': true,
    'ArrowRight': true,
    'ArrowUp': true,
    'Backspace': true,
    '.': true,
}

const isValidInput = allowed[key]
By Anonymous, 2019-07-26 16:34:12
 filterForProvincia() {
    console.log('ciao');
 }

The last line of code of a parting Developer

By Anonymous, 2019-07-23 11:31:51
form = JSON.parse(JSON.stringify(this.mobilityDistanceForm.getRawValue()));
By tralaladidou, 2019-07-15 20:41:51
function IsNumeric(sText) {
    var ValidChars = "0123456789.";
    var IsNumber = true;
    var Char;
    for (i = 0; i < sText.length && IsNumber == true; i++) {
        Char = sText.charAt(i);
        if (ValidChars.indexOf(Char) == -1) {
            IsNumber = false;
        }
    }
    return IsNumber;
}

So I suppose that "........" is a valid number...

By L, 2019-07-10 16:05:03

var move=0;
var kier=0;
var pic=0;
var rol=0;

var rol2=171;
var rol3=343;
var rol4=514;
var rol2_cel=171;
var rol3_cel=343;
var rol4_cel=514;

function onpic(p) {
  pic=p;
}

function offpic(p) {
  if( pic==p ) pic=0;
}

 function next() { if(move<40) move = 40; kier=0; }
 function prev() { if(move<40) move = 60; kier=1; }
 function set() {
  document.getElementById('ba1').style.left=0;
  document.getElementById('ba2').style.left=rol2;
  document.getElementById('ba3').style.left=rol3;
  document.getElementById('ba4').style.left=rol4;
}


function SetOpacity(object,opacityPct)
{
  // IE.
  object.style.filter = 'alpha(opacity=' + opacityPct + ')';
  // Old mozilla and firefox
  object.style.MozOpacity = opacityPct/100;
  // Everything else.
  object.style.opacity = opacityPct/100;
}


var randtim=new Array(110,103,130,125,108,118,112,122,101,100);
var showtimer=0;
var showpic=1;

 
 function Animuj() {
   if( pic==0 ) {
     rol2_cel=171;
     rol3_cel=343;
     rol4_cel=514;
   } else if( pic==1 ) {
     rol2_cel=342;
     rol3_cel=457;
     rol4_cel=571;
   } else if( pic==2 ) {
     rol2_cel=115;
     rol3_cel=457;
     rol4_cel=571;
   } else if( pic==3 ) {
     rol2_cel=114;
     rol3_cel=229;
     rol4_cel=571;
   } else if( pic==4 ) {
     rol2_cel=114;
     rol3_cel=228;
     rol4_cel=344;
   }
   var a = (rol2-rol2_cel)/10; if(( a< -0.1 )&&( a> -1 )) a = -1; if(( a>0.1 )&&( a<1 )) a = 1;
   if( rol2!=rol2_cel ) rol2-= a;
   var a = (rol3-rol3_cel)/10; if(( a< -0.1 )&&( a> -1 )) a = -1; if(( a>0.1 )&&( a<1 )) a = 1;
   if( rol3!=rol3_cel ) rol3-= a;
   var a = (rol4-rol4_cel)/10; if(( a< -0.1 )&&( a> -1 )) a = -1; if(( a>0.1 )&&( a<1 )) a = 1;
   if( rol4!=rol4_cel ) rol4-= a;
   set();
    document.getElementById('ba2').style.left=rol2;



 showtimer+=1;
 if(showtimer>100) {
  for( st=0; st<9; ++st ) {
   if(showtimer==randtim[st]) { SetOpacity(document.getElementById("ps"+st), 0); document.getElementById("ps"+st).style.backgroundImage="url('cs/log"+showpic+".jpg')"; }
   if(showtimer==(randtim[st]+1)) SetOpacity(document.getElementById("ps"+st),20); 
   if(showtimer==(randtim[st]+2)) SetOpacity(document.getElementById("ps"+st),40); 
   if(showtimer==(randtim[st]+3)) SetOpacity(document.getElementById("ps"+st),60); 
   if(showtimer==(randtim[st]+4)) SetOpacity(document.getElementById("ps"+st),80); 
   if(showtimer==(randtim[st]+5)) { document.getElementById("pn"+st).style.backgroundImage="url('cs/log"+showpic+".jpg')"; SetOpacity(document.getElementById("ps"+st),0); }
  }
  if(showtimer>150) {
   showtimer=0;
   for( st=0; st<9; ++st ) randtim[st]=Math.floor(Math.random()*26)+100;
   showpic+=1; if(showpic>2) showpic=0;
  }
 }


 }

 window.setInterval("Animuj()", 50);

This is how public money is spent in poland

By Anonymous, 2019-05-29 18:35:09
function renderGroupSelectedSuccessors() {
    var index = 0;
    if (tempSuccessorsGroupsList != null && tempSuccessorsGroupsList.length > 0) {
        var groups = tempSuccessorsGroupsList.splice(0, PageSettings.lazyRenderItemsPerPage);
        var groupSuccessors = '';
        for (var i = 0; i < groups.length; i++) {
            if (index % 10 == 0) {
                groupSuccessors += '<div style="float: left;"><ul>';
            }
            groupSuccessors += '<li><a data-groupid="'+groups[i].GroupID+'">' + groups[i].GroupName + '</a></li>';            
            index++;
            if (index % 10 == 0 || i == groups.length - 1) {
                groupSuccessors += '</ul></div>';
            }
        }
        $('#divGroupSuccessorsList').append(groupSuccessors);
        SetCheckBoxState();
        setTimeout(renderGroupSelectedSuccessors, 50);
    }
}

Where does the data come from? Where does it go? Why isn't this an endless recursive loop? Why has this worked for three years?

By Anonymous, 2019-05-10 13:20:47
function formatUpToANumberOfZeroesAfterFloatingPoint(number, numberOfZeroes, floatingPointSymbol) {
    numberOfZeroes = (numberOfZeroes === undefined || numberOfZeroes < 0) ? 2 : numberOfZeroes;
    floatingPointSymbol = floatingPointSymbol === undefined ? '.' : floatingPointSymbol;
    let numberSplitByFloatingPoint = number.toString().split(floatingPointSymbol);
    if (numberSplitByFloatingPoint.length !== 2) 
        return `${number}${floatingPointSymbol}${'0'.repeat(+numberOfZeroes)}`;
    
    let numberAfterFloatingPoint = numberSplitByFloatingPoint[1].toString();
    let formattedNumber = `${numberSplitByFloatingPoint[0]}`;
    let numberAfterFloatingPointLength = numberAfterFloatingPoint.toString().length;
    if (+numberOfZeroes > +numberAfterFloatingPointLength) 
        return `${formattedNumber}${floatingPointSymbol}${numberAfterFloatingPoint}${'0'.repeat(+numberOfZeroes - numberAfterFloatingPointLength)}`;
    
    let countOfNumbersAfterFloatingPoint = numberAfterFloatingPointLength;
    for (var i = numberAfterFloatingPointLength - 1; i >= 0; i--) {
        if (+(numberAfterFloatingPoint[i]) !== 0 || +countOfNumbersAfterFloatingPoint === +numberOfZeroes) {
            formattedNumber += `${floatingPointSymbol}${numberAfterFloatingPoint.substring(0, countOfNumbersAfterFloatingPoint)}`;
            break;
        }
        
        countOfNumbersAfterFloatingPoint--;
    }

    return formattedNumber;
}

Well, a junior dev here. A cute female QA came to me with a request - "the field for the price already has precision up to 4 decimal places, but we don't like the 4 ugly zeroes, so if the number ends in zeroes, let it have only 2" - she said in the most innocent-like tone ever known to mankind. How easy I mumbled and accepted the task. As she was leaving she added - "oo almost forgot, we also would like it if all the data fields for the price that are shown in the tables also are formatted that way". As I was watching her better side, while she was getting reunited with her QA tribe, I got shivers down the spine. I had a bad feeling about that one, but I wasn't sure why yet. Suddenly as I was getting up to get a cup of coffe, it dawned on me - "this poor excuse for a project is using jqGrid for displaying the data". To wrap things up - I got a quadruple espresso with a shot of Jacky, developers best friend in a time of need, and came up with this piece of art. Enjoy :)

By Kristopher Alexander, 2019-04-25 15:49:53
$('#userCheck').not(this).prop('checked', false);
By Anonymous, 2019-04-17 10:54:22
Handlebars.registerHelper("compare", function(a, operator, b) {
    var result = false;

    try {
      switch (operator) {
        case "==":
          // eslint-disable-next-line eqeqeq
          result = a == b;
          break;
  
        case "===":
          result = a === b;
          break;
  
        case "!=":
          // eslint-disable-next-line eqeqeq
          result = a != b;
          break;
  
        case "!==":
          result = a !== b;
          break;
  
        case "<":
          result = a < b;
          break;
  
        case ">":
          result = a > b;
          break;
  
        case "<=":
          result = a <= b;
          break;
  
        case ">=":
          result = a >= b;
          break;
  
        case "typeof":
          // eslint-disable-next-line valid-typeof
          result = typeof a === b;
          break;
  
        default: {
          throw new Error(
            "helper {{compare}}: invalid operator: ' + ".concat(operator, " + '")
          );
        }
      }
    } catch (err) {
      console.error("\n********** ".concat(err, "."));
    }
  
    return result;
});
By Anonymous, 2019-04-02 15:46:35
const Discord = require("discord.js");
const bot = new Discord.Client();
const TOKEN = "NOPE"
var color = require('chalk');
var fs = require('fs');

bot.on("ready", function(message) {
    console.log(color.green("Online"))
})
bot.on("message", function(message){
    console.log("Channel:" + color.blue(message.channel) + " " + "Author:" + color.blue(message.author) + " " + "Message:" + color.blue(message.content))
    if (message.content.includes("uranium") || message.content == "Uranium" || message.content == "uranium" || message.content.includes("uranium")) {
        console.log(color.black.yellow("Message Flagged As Suspicous"))
        console.log(color.black.yellow("Contains: Uranium"))
        console.log(color.black.bgYellow("Message:" + message.content))
        console.log(color.black.bgYellow("Message Id:" + message.id))
        console.log(color.black.bgYellow("Author Id:" + message.author.id))
        console.log(color.black.bgYellow("Channel Id:" + message.channel.id))
        console.log(color.yellow("Severity:" + "1"))
        var alertsev1 =  `Message + Id: + ${message.id} + | + Author + Id: + ${message.author.id} + | + Message + Channel Id: ${message.channel.id} + | + Message: + ${message.content}` 
        fs.writeFile('alerts.txt', `${alertsev2}`)
    }
    if (message.content.includes("raid") || message.content.includes("Raid")) {
        console.log(color.black.red("Message Flagged As Suspicous"))
        console.log(color.black.red("Contains: Raid"))
        console.log(color.black.bgRed("Message:" + message.content))
        console.log(color.black.bgRed("Message Id:" + message.id))
        console.log(color.black.bgRed("Author Id:" + message.author.id))
        console.log(color.black.bgRed("Channel Id:" + message.channel.id))
        console.log(color.black.red("Severity:" + "2"))
        var alertsev2 =  `Message + Id: + ${message.id} + | + Author + Id: + ${message.author.id} + | + Message + Channel Id: ${message.channel.id} + | + Message: + ${message.content}` 
        fs.writeFile('alerts.txt', `${alertsev2}`)
    }
    if (message.content.includes("raid") && message.content.includes("uranium") || message.content.includes("raid") && message.content.includes("Uranium") || message.content.includes("raid") && message.content.includes("uranium") || message.content.includes("Raid") && message.content.includes("uranium") || message.content.includes("Raid")) {
        console.log(color.black.red("Message Flagged As Possible Raid Initiation"))
        console.log(color.black.red("Contains: Raid, Uranium"))
        console.log(color.black.bgRed("Message:" + message.content))
        console.log(color.black.bgRed("Message Id:" + message.id))
        console.log(color.black.bgRed("Author Id:" + message.author.id))
        console.log(color.black.bgRed("Channel Id:" + message.channel.id))
        console.log(color.black.red("Severity:" + "3"))
        var alertsev3 =  `Message + Id: + ${message.id} + | + Author + Id: + ${message.author.id} + | + Message + Channel Id: ${message.channel.id} + | + Message: + ${message.content}` 
        fs.writeFile('alerts.txt', `${alertsev3}`)
    }
})
bot.login(TOKEN)

I'm making a discord message logger but I want to output message.content message.author message.id message.channel.id into one text file everytime a message is sent in the following format: Message ID:(Id here) Message Author: (Author ID here) Channel ID: (Channel ID here) Message: (message here) ive tried with the following code but it printed undefined out into the text document

By JackThePug, 2019-03-16 22:31:03
<Image source={ this.props.pickupOrDropoff == "pickup"
                                    ? i.pickup
                                    ? iconBlue
                                    : iconWhite
                                    : i.dropoff 
                                    ? iconBlue
                                    : iconWhite} style={{
                                      height:this.props.pickupOrDropoff == "pickup"
                                    ? i.pickup
                                    ? 30
                                    : i.sign === 'D' ? 30 : 35
                                    : i.dropoff 
                                    ? 30
                                    : i.sign === 'D' ? 30 : 35,
                                    marginRight:10 ,
                                    width: this.props.pickupOrDropoff == "pickup"
                                    ? i.pickup
                                    ? 40
                                    : 40
                                    : i.dropoff 
                                    ? 40
                                    : 40
                                    ,resizeMode:'contain'}}/>

I love when the code is neat...

By Fluttershy, 2019-03-05 11:40:08