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”
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:
- macros defined in parent templates
- the spaceless block
- nested blocks in other statements
If you would like to debug one of your command line scripts using PHPUnit then you need to export one of the XDEBUG_CONFIG values. I read one post about this (unfortunately lost the link and cannot place it here as a reference) the general idea was to export the configuration for XDEBUG and then run phpunit as you would normally do.
So, let’s say that you are using PHPStorm as your IDE then the script would be:
#!/bin/bash export XDEBUG_CONFIG="idekey=PHPSTORM"; phpunit $@
If you name the script phpunitx then the only thing that you would need to do to run PHPUnit from the command line with XDEBUG enabled would be to invoke phpunitx instead of phpunit.
Phing is a PHP build tool that you might be familiar with or you might be already using. The official Phing website can be found at http://www.phing.info/ and the initials stand for PHing Is Not GNU make. You can download or install it as a PEAR package and as long as you are a bit familiar with XML it is really easy to learn how to use. So, if you are reading past this point it means that you have actually used Phing before and that you are familiar with its CopyTask for copying individual files or filesets from one location to another.
Recently I was trying a new build file with Phing and came accross an interesting issue. The result of building a target that included copying a previously defined fileset from one location to another had a somewhat unexpected result. An empty folder that was contained in the source location for which all users had read, write and execute permissions on, was copied accross but the permissions were not kept. I was not receiving any errors and the folder was actually created in the destination folder. As it turns out the version of Phing that I was using did not support copying an empty folder with its permissions to a new location. So if you are having a similar issue do upgrade your package to the 2.5.0 version of Phing (as of the time of writting this is the latest stable release of Phing on PEAR). You can perform the upgrade quite easily as you would with any other PEAR package.