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How to make a disk cache using PHP

April 5, 2020

If you have a busy PHP driven website and don’t want to make constant queries to the database for each user that will see the same data, then you can easily resolve this problem by letting the first of these visitors generate a cache for the consecutive visitors.

How to remove files without a certain extension?

April 4, 2020

You have a directory with a lot of files, and you want to delete only the files that don’t match a specific extension.

How to debug an Apache 404 error

April 3, 2020

CLI , Linux

So you are getting an error 404 or perhaps even worse, a 500!

How to Reorder Data in Log Files using Python

April 2, 2020

Interview , Python

Let’s say that you have an array or a list, or logs.

Another WTF Javascript Moment

April 1, 2020

Javascript

Javascript is a powerful language, but sometimes it doesn’t always do what you expect it to.

How to Bring Back GROUP BY in MySQL

March 31, 2020

My SQL

If you are suddenly not able to perform GROUP BY statements as you used to after a MySQL/MariaDB version update, then you will have noticed the change forced upon you.

How to implement a Queue using Stacks in Python

March 30, 2020

Python

A common programming interview question, and for a change, one that you will actually be able to use in the job, is that of implementing a Queue by means of using Stacks in Python.

Find positions of largest groups of characters in a String with Python

March 29, 2020

Interview , Python

The question Take a string S of lowercase letters. These letters form consecutive groupings of like characters.

How to make Git “forget” about a file that was tracked but is now in .gitignore?

March 28, 2020

You can ignore certain files and folders from being committed to Git by means of including a .

How to Purge the BinLog for MySQL and MariaDB

March 27, 2020

My SQL , SQL

If you see lots of disk space quickly disappearing on your MySQL or MariaDB server, then you may want to look into the BinLog directory, it is located at /var/log/mysql/.

How to Measure Execution Time in Google Colab

March 26, 2020

Python

Google Colab is a fantastic environment to write Python code using Jupyter Notebooks, hosted for free by Google.

How to fake a User Agent in Python

March 25, 2020

Python

A User-Agent is a bunch of text that is sent with every HTTP and HTTPS request.

How to Delete from a Table where rows match in Another Table – MySQL

March 24, 2020

My SQL , SQL

So you have a table where you want to delete a bunch of rows, based on a particular column being matched in another table.

REPLACE INTO instead of INSERT INTO – MySQL

March 23, 2020

My SQL , SQL

There are many occasions where you need to INSERT a record into a MySQL database table, but the record already exists.

Read the bottom n lines of a file in Python

March 22, 2020

Python

Using Operating System Commands in Python Use the Linux/Mac tail command to provide the data:

How to Format a Number as a Currency in Javascript

March 21, 2020

Javascript

There are quite a few ways to format a number as a currency value in Javascript.

How to Change the Timezone on Ubuntu Server

March 20, 2020

CLI , Linux

If you’ve ever typed date into your Ubuntu Server and seen a different time or timezone appear than you expected, then it probably means that this tutorial is for you.

How to make a Python script Pip-installable

March 19, 2020

Pip , Python

As Python developers, we’ve all used pip to install applications, but speaking to other Python developers, it’s not always clear how to make your own application/script pip-installable.

How to Host an AngularJS site on AWS S3

March 18, 2020

Aws , Cloud , Javascript

AngularJS is a Javascript Framework that allows you to create dynamic front-end web applications easily.

How to send emails using Python and AWS SES SMTP

March 17, 2020

Aws , Python

Sending emails using Python and AWS’ SES service is really easy.

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