PROBLEM: We have a div tag with width set to 800px. When the browser width is greater than 800px, it shouldn’t stretch the div but it should bring it to...
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When we want to prevent other event handlers from executing after a certain event is fired, we can use one of these two techniques. event.preventDefault()...
PROBLEM: Operating System not found on Dell OptiPlex 7010 After resetting PC on Windows 10 ,message shows “Operating System not found… Cntrl + Alt...
HashMap in Java HashMap maintains key and value pairs and often denoted as HashMap<Key, Value> or HashMap<K, V>. HashMap implements Map interface...
PROBLEM : What is the easiest way to encode a PHP string for output to a JavaScript variable? we have a PHP string which includes quotes and newlines. we need...
bindParam and bindValue bindValue(), Unlike PDOStatement::bindValue(), the variable is bound as a reference and will only be evaluated at the time that...
PROBLEM: SMTP: SMTP is an abbreviation for Simple Mail Transfer Protocol. SMTP is an internet standard for electronic mail, i.e., email. All mail servers and...
urlencode urlencode — URL-encodes string Description This function is convenient when encoding a string to be used in a query part of a URL, as a convenient...
How can you display the top results in my terminal in real time so that the list is sorted by memory usage? SOLUTION 1: Use quick tip using top command in...
There are few ways to change the type of a value from integer to string. In the following you’ll find three ways- Method 1: Applying type casting In this...
PROBLEM: we have a website hosted on a PC we have no access to. we have an upload form allowing people to upload mp3 files up to 30MB big. Our server side...
PROBLEM : We have a bunch of client Point Of Sale (POS) systems that periodically send new sales data to one centralized database, which stores the data into...
new self: self points to the class in which it is written. self refers to the same class in which the new keyword is actually written. New static static, in...
PROBLEM : The question is simple. we have a for each loop in our code: In this loop, we want to react differently when we are in first or last iteration. How...
Emptying the buffers cache: If you want to empty it you can use this chain of commands. Every Linux System has three options to clear cache without...
PROBLEM: How do you remove a file whose filename begins with a dash (hyphen or minus) -? You are ssh’d into a remote OSX server and you have this file in...
PROBLEM: Before you install a package you’d like to know what version you would get. How do you check the version before installing using apt-get or...
PROBLEM: Have lost my password, and can’t use my phone without the password. How can I reset the password? Are there any general passwords? SOLUTION 1: Try the...
isset isset — Determine if a variable is set and is not NULL Description: Determine if a variable is set and is not NULL. If a variable has been unset with...
Java Map Interface A map contains values on the basis of key i.e. key and value pair. Each key and value pair is known as an entry. Map contains only unique...
