A Permutation is a re-arrangement of the elements of an ordered list such that each element in the list assumes every position in the list one by one. A string of length n has n! permutation. Putting it simple, a permutation of a string ABC will be all possible combinations of the characters ABC. There […]
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Binary Search is the most simple, straight-forward but efficient manner of finding a key from a sorted array. It is carried out by repeatedly dividing the search array in half. If the value of the search key is less than the item in the middle of the half in focus, it narrows down the interval […]
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Flash or USB drives have been in use for about a couple of decades and have now become the integral part of the auxiliary devices kept by the serious computer users. Hundreds of millions of users rely on USB flash drives to save or carry the data from one place to another. Remember that a […]
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HCL Notes (formerly IBM Notes) provides access to ACL through a pretty useful dialog window under Notes Client. The authorized user can perform several actions like viewing existing database users, their access levels and assigned roles. They can add and remove users and grant rights and roles to them as per the requirements. Viewing and […]
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Regular expressions provide a short and flexible means for identifying particular text; characters, words, or patterns of characters. You can extract emails, proxies, IP addresses, phone numbers, home addresses, HTML tags, URLs, links, dates, and what’s not? Regular Expression is a language of its own. Whatever programming languages you have already learnt, will help very […]
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In Microsoft Excel, an Array Formula provides you with a way to do powerful calculations on one or more value sets. The Array Formula works with an array of values, rather than a single value. Array formulas can return a single result, or multiple results. That sounds pretty simple enough, and indeed many array formulas […]
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WordPress was “invented” in May 27, 2003. The founders of this software are Matt Mullenweg and Mike Little. WordPress is a content management system (CMS) written in PHP paired with MySql database and it is well-famous as an online open source website building tool. WordPress features Plugin architecture, a template system, and a huge number […]
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What does it mean to Blacklist or Whitelist Email Address? When you Blacklist an email address, all emails sent from that address is blocked from reaching your inbox. Alternately, whitelisting an email address bypasses the spam filters configured on your email server and allows emails from that address to reach inbox. Pretty cool, isn’t it? […]
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How many of us consider that the phone we are going to choose is really good enough and does not have one or more other weaknesses which make it a useless device. Here’s a little guideline which may help you to consider the most eminent, but usually neglected things before you buy a new phone.
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Add Custom Column (Featured Image) to the Posts List in WordPress Admin.Set a custom size of say, 55 pixels that will be used to show the featured image’s under Featured Image column: GET Featured Image of the provided Post Id. And at last we define two functions: the first will add the new column (featured_image), […]
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