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  What will the value of Integer.valueOf(127) == Integer.valueOf(127) be in Java?

Do you really understand how Java does the integer comparison? OK, ignore the statements in the post title. What we are interested in is another set of comparison statements. Let's first see below code snippet. public class IntegerComparison { public static void main(String[] args) { Integer a = 127, b = 127; Integer c = 128, d = 128; System.out.println(a == b); System.out.println(c == d); } } What do you think the output will be? Are they both displaying true? You will find out t...

   JAVA,==,EQUALSTO     2018-01-13 22:18:15

  SD Cards: Why Order Them In A Bulk?

Backing up important data is an undeniable aspect of the technologically advanced modern world. Be it photographs, videos, movies or other significant data, they all need to be stored properly for future use.  SD card or Secure Digital card is one such device that will help store all the relevant materials securely. As the name suggests, it secures all digital data. To understand why we should order bulk SD cards, we need to know why they are so beneficial.  They are extremely compact,...

   HARDWARE,SDCARD     2019-10-10 10:43:27

  Integer overflow

You may be familiar with integer overflow, but what you may not be familiar with is how gcc handles signed integer overflow. First let's look at the standard, for unsigned integer, the standard says : A computation involving unsigned operands can never overflow, because a result that cannot be represented by the resulting unsigned integer type is reduced modulo the number that is one greater than the largest value that can be represented by the resulting type. In other words, unsigned integer ov...

   Integer overflow,gcc,Linux     2012-10-20 13:33:10

  What is the use of empty struct in GoLang

In Go, an empty struct struct{} is a struct with no fields that may appear to be of little use, but in reality, it can be useful in certain situations and become a simple and efficient solution in code. As a semaphore or lock Because the empty struct has no fields, it can be conveniently used to implement some concurrency control functions, such as mutex locks, read-write locks. We can use chan struct{} to implement an unbuffered channel for controlling concurrent access. package main import ( ...

   GOLANG,EMPTY STRUCT     2024-04-05 23:54:03

  What can CSS :has pseudo class be used for?

CSS's :has is a pseudo-class representing an element if any of the selectors passed as parameters matching at least one element. From the name, it's also easy to understand how it matches elements. The syntax is pretty easy as well: :has([some-selector]) With this pseudo class, it can do lots of things which previously would be challenging or need tweaking the DOM elements with JavaScript. This post will demonstrate what :has can be used for. Introduction Below are a few simple ex...

   CSS,:HAS,:NOT,PSEUDO CLASS     2022-09-18 01:40:54

  A trap about PHP random number

The method to get random number in PHP is very simple, we only need to use rand() function. int rand ( int $min , int $max ) One function call can return the random number in a specified range. But in fact, the random number in computer is actually pseudorandomness, generally to increase the randomness, we may set a random seed before calling rand(). void srand ([ int $seed ] ) According to other language features, we should pass a time value as a parameter to the srand() function, generally...

   PHP,rand,srand,mt_rand     2013-06-07 09:10:10

  Can you learn to invest successfully using your smartphone?

Got some spare cash saved away, and want to start looking into building a financial portfolio and perhaps investing for your future? Putting your smartphone to good use every now and again, and spending your time on it productively rather than just for mindless social media scrolling and games, can actually help you to reach a better financial position before you’ve even noticed. For those interested, here are a few different tips on how you can learn to invest successfully using your smar...

   PROMOTION,SMARTPHONE,INVESTMENT     2020-07-01 00:37:42

  git reset vs git revert

When maintaining code using version control systems such as git, it is unavoidable that we need to rollback some wrong commits either due to bugs or temp code revert. In this case, rookie developers would be very nervous because they may get lost on what they should do to rollback their changes without affecting others, but to veteran developers, this is their routine work and they can show you different ways of doing that. In this post, we will introduce two major ones used frequently by develo...

   GIT,GIT RESET,GIT REVERT     2019-02-02 08:26:39

  JavaScript's New Features: Exploring the Latest Additions to the Language

As the web continues to evolve, so too does the JavaScript ecosystem. With the release of ECMAScript 2023 (ES2023), JavaScript developers can now leverage a range of new features that promise to improve code quality, readability, and maintainability. In this blog post, we'll dive into some of ES2023's most exciting additions and provide practical examples of how they can be used in your projects. 1. Private Fields and Methods in Classes One of the most anticipated features in ES2023 is the intro...

   JAVASCRIPT,ES2023     2023-04-16 01:41:58

  Which Type of IT Career is Best For You?

Considering the growth of the information technology job market, a career in IT is an incredibly smart career move.  A career in IT can mean many things – you can become a network administration, website developer, database specialist, programmer or engineer. The job range is vast and can suit various personalities and levels of technical skill. Having a good insight into those job profiles is key to make the right decision about your career path. Here's a selection of some of the mos...

   career,IT,tips     2014-07-30 09:21:40

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