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This tutorial will explain how to use the python zip() function to merge or aggregate several iterables (including lists and tuples). First up, the Python zip() function has NOTHING to do with compressing files. It’s got nothing to do with making a .zip file. It’s a totally different… Read More »How to use the Python zip() Function, With Examples
This article will outline several methods for generating random numbers and strings in the Python programming language. Generating random values is a common and important task when programming almost any kind of application of moderate complexity. Random strings and numbers are used to generate unique… Read More »How to Generate Random Numbers and Strings in Python
This article will show you how to calculate the square root, or any root, of numbers in the Python programming language. We previously covered squaring and raising numbers to a power in this article. What is a Root in Mathematics? The root of a number x is the… Read More »Python: Calculating a Number’s Root (Square/sqrt, Cube), With Examples
This quick tip will show you the best way to check if a file or directory is writable in the Python programming language. Python: The Best Way To Check if a File or Directory is Writable Just try and write to it. That’s it. If you can write… Read More »Best Way to Check if a File/Directory is Writable [Python]
Here’s a handy guide on using if/else/elseif conditional statements in PHP to execute code based on certain conditions. if/else statements are found in pretty much all programming languages. Computer programs need to perform actions based on a user selection, or the result of a calculation, or the… Read More »How to Use if…else Conditional Statements in PHP [Examples]
This article will show you how to add items to a list in Python using the append() method. Lists are a type of Python variable that can hold any number of member elements. They’re analogous to arrays in other programming languages. Lists can be defined and altered in… Read More »Appending Items to a List in Python with append() [Examples]
This quick tutorial will show you how to use the PHP echo statement to print/display information on screen. A computer program isn’t much good if it doesn’t display some output to the user. The echo statement prints a simple string of text in PHP – usually to the web… Read More »How to Use the PHP echo Statement, With Examples
This article will demonstrate the usage of the SQL CHECK Constraint to limit column values, as used in MySQL/MariaDB. The SQL CHECK constraint allows you to define limitations to the value which can appear in a table column. It also allows you to apply constraints to a… Read More »Limit Column Values With The MySQL CHECK Constraint [Examples]
This article will show you how to find the default or current MySQL (or MariaDB) port and how to change it. What is a Port? A port is a numerical identifier for a communication endpoint on a computer network. Or, put simpler, it’s a unique number on… Read More »Default MySQL/MariaDB Port, Finding It, Changing It
This tutorial will teach you how to use the which command in Linux with some simple examples. The which command will tell you the path to the executable used by a command on the system if it exists. Why is this useful? Say you’ve got two copies of the MySQL executable… Read More »How to Use the which Command in Linux, With Examples
