Today I came across this amazing post from the Developers at Mozilla called “Re-Introduction to Javascript” that helped me better understand (I hope 😅) what are the object prototypes in JavaScript and how to use them 🎆. But let’s have a look at an example to see this in action.
Continue reading “JavaScript objects and how the Prototype works”If you have been using the Symfony Form component then you have probably seen that it has a great feature that protects you from Cross Site Request Forgery (CSRF) attacks.
Writing code and building software is fun no matter which language one uses. But what we have found is that there is no “language to rule them all”. There are a number of languages out there each with its own quirks, strengths and weaknesses and that’s just amazing.
So where does that leave us as software engineers? We will probably need to pick up more than one languages as we go along, but what’s the best way to go about that?
Continue reading “5 things to sort out as a multi-lingual software engineer”
A lot of things in life are a matter of perspective and visibility and the same applies to variables in Go 😅. But what is a variable’s scope, how is it defined and what does it mean to shadow a variable in Go?
Let’s (very) loosely say that the scope of a variable declares where this variable is visible from ie. if we have declared a variable at the top of the file then it’s visible from within the entire code of that file.
We can go even deeper than that though and we can break this question down into Go specific terms.
Continue reading “Variable scopes and shadowing in Go”
Go has its own package for handing sorting – called “sort” but in this post we are going to use the Go language to implement a sorting algorithm called Bubble sort.
Problem definition: Given a slice of integers sort them in ascending order
Bubble sort is an iterative comparison algorithm that sorts the elements by swapping them around if they are out of order. If a larger element comes before a smaller one => swap them and move on to the next position of the array.
Continue reading “Sorting in Go using Bubble sort”
Since version 1.7 the Go testing package provides the ability to run some of the tests in parallel (well not entirely in parallel but that is another blog post 😉).
This is optional functionality you can enable by adding a single line of code t.Parallel() in your subtests. But how does that work exactly and what does Go actually do with these tests?
I find the way that strings have been implemented in Go to be really interesting but also a bit confusing when you are first introduced to them. Go has native UTF8 support, which flows through how the source code is written to how strings and “runes” are represented (runes is the thing that really got me by surprise but more on that later). So what does Go do differently with strings that is worth mentioning?
Continue reading “String manipulation in Go”
Doing a major version upgrade is always fun so this is no exception. I use Twig for my PHP projects so I run into multiple little snags whilst upgrading to version 2. I have listed the most interesting ones here with the errors I was seeing and the recommended updates:
This is slightly different implementation of the jquery textarea text limit counter found at: http://www.scriptiny.com/2012/09/jquery-input-textarea-limiter/. The main difference is that the user is not cutoff when he reaches the limit of the allowed characters but he is notified via the counter that his text is longer than expected.
The idea behind it is to have a textarea that accepts user input and there is a limit in the characters that you want you are allowed to type in the textarea. While you type in characters in the textarea a counter is updated that shows the remaining characters. The number is correct even when you reload the page and the area is pre-populated with text. This particular demo uses jquery 1.5.1
Continue reading “JQuery textarea text limit counter”In PHP the Scope Resolution Operator (which is actually the double colon or Paamayim Nekudotayim as it is its official name) has many uses. From the PHP manual pages (Manual) I quote
The Scope Resolution Operator (also called Paamayim Nekudotayim) or in simpler terms, the double colon, is a token that allows access to static, constant, and overridden properties or methods of a class. When referencing these items from outside the class definition, use the name of the class.
So, I recently decided to go ahead and test this operator in a bit more detail and discovered something I did not know about the way PHP decides to give you access to its public methods.
Let us consider the following php class
