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  What to put on whiteboard during an interview

As a programmer, you may go through different kinds of programming tests while interviewing for jobs. The most famous and difficult one may be the whiteboard test for lots of people. Usually the interviewer will give the candidate an algorithm problem or case study and ask the candidate to implement the algorithm with his/her favorite programming language. The code to be written is not too much but it requires the candidate to thoroughly consider different edge cases. So wha...

   TIPS,INTERVIEW,WHITEBOARD TEST     2014-08-29 20:34:52

  A Different Kind of Technical Interview

Everyone who's been programming professionally for a while knows the standard format of the technical interview. You go in, there's a whiteboard in the room, and you write code on it to answer questions.Everyone also has the same basic complaints about these interviews. In a normal work environment, you have access to an API or search engine, but at a whiteboard you don't. Whiteboard questions generally don't include much in the way of overall design, and they're typically limited to simple algo...

   Interview,Programming,Methods,Pairing     2011-06-04 07:56:21

  Hide a file in a picture

Sometimes if you want to hide some important files on your computer which you don't want others to see, how would you do that? Find a professional tool? Set password for some folders? Change the file properties to hidden? They are possible, but they may not be so convenient or so secure. Here we share with you how to hide a file in a picture. Prerequisites 1 picture for example : test.jpg 1 test file, for example : test.txt WinRAR Steps Prepare the picture test.jpg and test file test.txt Use ...

   Trick,Picture,Fil hiding,WinRAR     2012-09-13 19:36:36

  What’s the waiter doing with the computer screen?

When Richard Gatarski and a few friends wanted to dine in the Swedish city of Norrköping a few weeks ago, they booked a table at a downtown Italian restaurant that seemed nice. When they arrived, they were greeted by the headwaiter, who asked if they had a reservation. Richard confirmed, and the headwaiter looked at his computer screen. ”Gatarski? Hm, let’s see .. yes, there’s your reservation. Welcome!” The headwaiter then picked up what Richard first thought m...

   Waiter,Computer screen,Touch     2012-03-12 11:07:01

  this in JavaScript

this is a keyword in JavaScript. It refers to an internal object created automatically when a function executes, it can only be used in a function. For example:        function test(){     this.x = 1;   }The this keyword will change when a function is called in different situations. However, the general rule is : this refers to the object which calls the function.Next we discuss the use of this in 4 different situatio...

   this,keyword,use,JavaScript     2012-05-05 12:47:37

  iPhone 5 vs Samsung Galaxy S3 drop test

With the launch of the iPhone 5, there are quite a few companies starting the test of Apple's new darling. Recently, Android Authority released a video of a test. The test is about ropping iPhone 5 and Galaxy S3 three times from different heights, the result is not good to Galaxy S3, although two phones can still work, the Galaxy S3 screen almost completely torn.In daily life, we may pull out the phone from our pocket and hold it in our hand, put the phone to our ear. In these three cases, the p...

   iPhone 5,Galaxy S3,drop test     2012-09-21 23:42:18

  Don't write on the whiteboard

I recently interviewed at a major technology company. I won't mention the name because, honestly, I can't remember whether I signed an NDA, much less how strong it was.I did well. Mostly because of luck. I normally step over myself when I interview. I guess I've improved over the years. Here are a few tips to ace your own interview.1. Don't write on the whiteboardWhen I interviewed at Palantir around 5 years ago, I had a lot of trouble with this. Yes, I knew next to nothing about compu...

   Interview,Preparation,Whiteboard,Note,Python     2012-01-11 11:31:32

  How To Write A Good Programming Test

I’ve taken and marked a lot of programming tests in the past. I love doing them as it’s always good to see what challenges different programmers have come up with when designing them. Unfortunately, however, most of them aren’t very good. Below is a list of general ideas to help increase the quality of programmer tests. 1. Keep it relevant Too many of the tests have questions on content that simply isn’t relevant to the job. The whole idea behind a programming test i...

   Programming test,Interview,Questions,Pro     2011-08-26 02:46:44

  Format JSON data on Ubuntu

JSON now becomes a very popular data format because of its simplicity and light-weight. Nowadays many RESTful APIs will offer a choice of exchanging JSON data between the server and client. Sometimes the data may not be formatted and it cannot be easily read by human beings. It's frequently desired that the unformatted JSON data should be formatted before read. Today we will show a few ways to format JSON data on Ubuntu. Assume we have a json file test.json with below content. { "title": "Test"...

   RUBY,PYTHON,NODEJS,JSON,JQ,PERL,LINUX,UBUNTU,YAJL     2016-08-17 11:05:09

  Demo on creating worker pool in GoLang

A worker pool is a pool where a specified number of workers(usually goroutine) created and run to pick up tasks. This can allow multiple tasks to be ran at the same time while keeping the number of workers a fixed number to avoid overuse of resource in the program. There are usually two approaches of creating worker pool. One is with fixed number of workers pre-created One is creating worker when needed until the max number of workers created In this post, we will cover the demonstration of cr...

   WORKER POOL,GOLANG,GOROUTINE     2021-01-24 05:04:00