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In Python, comprehensions are a useful construct that allows us to create new sequences in a very concise way.

If you're familiar with Python's keyword-only arguments, then you've probably wondered why the same constraint doesn't exist for positional arguments. This changes with Python 3.

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Specify a parallel filesystem cache for compiled bytecode

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AKA the Walrus Operator

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Learn how to use formatted string literals in Python

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While this requirement may seem rare, learning how to nest defaultdicts properly can be extremely powerful and save you from bloated and confusing initialization code.

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Make your object readable in console.

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This short guide will show you how to move the search box in Visual Studio Code from the sidebar to the footer panel, making it easier to find and replace files.

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When working with arrays in JavaScript, we often need to remove elements.

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Enumerable properties are properties whose internal enumerable flag set to true.

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Finding guides

In Python, comprehensions are a useful construct that allows us to create new sequences in a very concise way.

code python

If you're familiar with Python's keyword-only arguments, then you've probably wondered why the same constraint doesn't exist for positional arguments. This changes with Python 3.

code python

Specify a parallel filesystem cache for compiled bytecode

code python

AKA the Walrus Operator

code python

Learn how to use formatted string literals in Python

code python

While this requirement may seem rare, learning how to nest defaultdicts properly can be extremely powerful and save you from bloated and confusing initialization code.

code python

Make your object readable in console.

code javascript webdev

This short guide will show you how to move the search box in Visual Studio Code from the sidebar to the footer panel, making it easier to find and replace files.

code vscode

When working with arrays in JavaScript, we often need to remove elements.

code javascript

Enumerable properties are properties whose internal enumerable flag set to true.

code javascript

In Python, we often run into scenarios where we need to merge two or more lists. This is also called list concatenation, and Python provides multiple methods for accomplishing this.

code python

This guide demonstrates multiple ways to iterate over a JavaScript object's properties and values.

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There are two very similar statements in JavaScript: for...in and for...of. And while they can be easily confused, they're actually quite different.

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Cleaning up unused tags is an important part of Git housekeeping. This guide will show you how to delete tags from both local and remote Git repositories.

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Learn how to create and use Kubernetes secrets

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My journey trying to find the one loop operator to rule them all

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Python's zip function allows us to easily map elements of the same index in multiple containers.

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A comprehensive guide on Python "for" loops

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Rather than reinvent the wheel, a good Pythonista will make use of the many, many great third-party Python packages and frameworks. This guide will show you how to install packages with pip.

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When learning object oriented programming in Python, there can be a few gotchas when it comes to distinguishing between class and instance variables.

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Hello, world!

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The goal for this guide is to demonstrate the most commonly used arithmetic operators. You should try to become familiar with each of these as they will be used in all kinds of Python applications.

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This guide is an introduction to Python variables. Variables are where programming starts to get interesting. Technically speaking, a variable is a location in memory that is given a name.

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In this guide we're going to cover how to print in Python, both to a file and to standard output.

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Python 3 was released quite a few years ago, so if you haven't made the switch yet from Python 2, it's probably time to start! This guide will show you how to install and use Python 3 on your Mac.

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I'll be honest - this guide is primarily a reference for future me. Unit testing is something I want to improve on, and I find myself searching for the same things over and over.

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Git is an open-source version control system (VCS). In order to use Git to track changes in your code from the command line, you’ll need to download, install and configure it on your computer.

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Drive a motor or light up an LED based on Linux sound output!

linux code

Homebrew is a macOS package manager built on ruby and git. Homebrew will help you easily install and manage a variety packages and applications.

mac code

Continuous integration is pretty trendy, but despite that fact, it's also pretty useful. This guide will show you how to set up your first project in CircleCI.

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By default, the HTML exported from Google Docs includes tons of classes, styles, and is generally messy. This short guide will teach you how to export clean HTML devoid of classes and inline styles.

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Generators in Python are incredibly powerful yet often hard to grasp for beginners. In this guide we'll cover generators in depth.

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Naming things is hard. "There are only two hard problems in Computer Science: cache invalidation and naming things." — Phil Karlton Truer words were never spoken.

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jQuery is a powerful tool for front-end developers, but it does not alleviate the responsibility of ensuring your code is efficient.

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The Python standard library includes a great set of modules, but many projects will require the use of third-party modules.

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Lists are powerful data structures in Python. And as you'll see, the language provides some syntactic sugar that allows to do interesting things with very little code.

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Making a deep copy of an object in JavaScript is fairly challenging. Fortunately, there are a few ways to accomplish this without much code.

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At some point you'll want to read, set, and remove cookies using JavaScript.

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Learn how to split a string into an array.

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This guide will teach you how to concatenate, or join, all elements of an array into a single string.

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Learn how to merge two arrays together in JavaScript.

javascript code

If you've been experimenting with Docker, you've probably discovered that each time you restart a container the data is gone.

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At howchoo, our code is on private Github repos. We've recently started using pull requests to submit new changes to the code base.

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In this guide, I'll provide sample code for animating scroll in jQuery, and for those looking for more I'll break down each component.

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I find Vim to be very useful in my daily development activities. I was delighted to learn that you can have your own key mappings in Vim. It is documented very well in the vim help section.

vim code

Much of what you need to do with Python can be done using built-in containers like dict, list, set, and tuple. But these aren't always the most optimal.

python code

How many times have you been put into situations where you had to update somebody else's code. If you are part of a development team my guess is more often than you would like.

python debugging code

You may not need to deal with fractions often, but when you do Python's Fraction class comes to the rescue.

python code

Bourbon is a library of Sass mixins. It provides a lot of functionality while keeping your css slim. Assuming you're using a standard rails installation, Sass will already be installed and working.

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Closures are extremely valuable if you know how to use them. The problem is that many JavaScript developers don't know how to use them.

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Ruby on Rails is one of the most popular web development frameworks, and Heroku has become a popular place to quickly deploy applications - and both for very good reason.

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You could write JavaScript for years without ever understanding scope or how the this keyword is set (it probably won't be great code).

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If you've never handled keyboard events in jQuery this is a good place to start.

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A scope is simply the set of variables that you have access to. Scoping in JavaScript can be confusing. Even some experienced JavaScript developers still struggle with it.

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If you're a Python programmer, you should become familiar with iPython. Use the steps in this guide to learn how to install iPython. What is iPython?

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In short, hoisting is when JavaScript moves variable and function declarations to the top of their scope before any code is executed.

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There are two kinds of loops in Python. In this guide we'll cover both the "for" loop and the "while" loop. We'll also cover how to control these loops by continuing and breaking out.

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Learn how to use Python's sleep function to make a timed delay. tl;dr import time time.sleep(seconds)

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There are multiple ways to reverse a string using Python 3. In this guide we're going to cover the extended slice operator and the reverse function.

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This guide provides an overview of Python map function. Python 2 and Python 3 have subtle differences in implementation, but they are generally used in the same way.

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List comprehension is a beautiful way to simplify your code. Python lists are powerful data structures, and list comprehensions are one of the most convenient and concise ways to create lists.

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Enabling short open tags gives you access to opening your PHP script with <? rather than the full <?php and also includes <?= '...' ?> as a replacement for <?php echo '...'; ?>.

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If you want to find out how many characters are in a file here's how!

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This short guide will teach you how to print in Python.

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If you're using PHP for web developoment, you may often want to check the syntax of your file without opening it in a browser. Checking syntax is quite easy from the command line.

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