My name is Tak and I’m involved with the sales and marketing aspects of Rob’s courses. And since it is my job to promote his video learning courses I thought it’s a good idea to get to know the products. Like you probably know Rob offers video tutorial courses on subjects like HTML, Javascript, PHP, Bootstrap as well as online learning for developing on iOS and the new Apple Watch using Swift.
I thought it would be a good idea to start with his online course developing apps for iOS and Swift. And for those who don’t know, iOS is what the iPhone runs on.
It’s been over a decade since I can say I’ve been involved in any type of programming of any type. This was using the C programming language and since then, a host new programming languages have become mainstream including PHP, Ruby and C# to name a few.
So yes I know programming concepts like variable types, conditions and loops but I still had to start from the very beginning to understand the features of Xcode, the toolset to do the Swift development.
Old habits die hard
I found myself doing things like putting a semicolon after each statement and putting brackets around simple if conditions. Luckily, Swift is very forgiving because although this practice is not wrong, it isn’t necessary.
How many fingers?
There are two relatively simple apps you develop initially. One is called Cat Years which allows the user to enter a number into the app which is multiplied by 7 and the second is a simple game where the app generates a random number up to 5 and you enter a number to guess that number and the app tells you if you have guessed the correct number or not.
So app development comes relatively early in the course after getting the hang of some basic concepts.
Errors.. Errors.. Errors..
Most of the errors I came across were a result of my lack of exposure to any programming language for such a long time. Luckily Xcode is really good at picking these up even before you try to run it. For example, if you are trying to use a variable which hasn’t been declared because you’ve either made a typo or forgot to declare it. Xcode will give you a friendly message ‘use of unresolved identifier’ and highlight it.
Error if you have not declared a variable.
Other errors I made were syntactical in nature, using the [ bracket instead of ( and vice versa. Most of these could be solved on my own by taking time to analyse what I did or comparing it to Rob’s solutions in his video tutorials.
However, one error which I really struggled with was when my app would not compile and run. It would exit with:
libc++abi.dylib: terminating with uncaught exception of type NSException
What did this mean?! I did have a suspicion. In my Storyboard I had ctrl, left clicked and dragged a label onto my ViewController to create variable but misspelt it. So I deleted the code from the ViewController and did it again. Then I changed my mind about the name and deleted it again. I suspected that there was some connection from the label to the variable I wanted to use. Re-creating my app from start again would probably of solved this but that was not an ideal solution.
Swift outlet error
So a lot of time was spent pondering how I would solve this. Luckily I have access to the creator for the online video course for iOS and Swift development. You can delete the referenced outlet and to do this all you do is, right click the object on the storyboard, in this case a label and a menu appears where you can delete the unwanted outlet.
On the picture on the right you can see that there are four referenced outlets. I just deleted the three where I had also deleted the variables in the ViewController. Happy days!
Don’t forget! Problems like this can be posted on the forums.
Onwards and upwards!
I’ve barely scratched the surface of what is offered on this involving course. There’s a cliche ‘learn by doing’ and with this programming video training course on iOS Swift video, it’s definitely the case. And I will be blogging my experience and progress with this course in the next few weeks.
Building up to this we learn about tables in Swift and how to display items in a table from an array of items. Rob filled his array with members of his family and out put them to each row. I filled my array with the names of my siblings. Unfortunately, when the app ran the display wasn’t what I wanted. The intention was to have each name on each row.
My array declaration had the commas within double quotes. So Swift treated the contents as a single string item for one array element. A simple mistake but something to bear in mind.
Another novice mistake involves the error message “Array index out of range” which occurs when you try to refer to an array element which doesn’t exist. So if your array has nine elements (not counting 0!) and you refer to the tenth e.g. array[10] then Swift won’t be happy with it.
Paninis & PHP: Three Challenges I Faced In My First Dev Project
I’ve tried to fight it over the years, but there’s no use in denying it anymore. My name’s Andy and I am a web geek.
Since February this year, I’ve worked with Rob at Eco Web Hosting to help him find more time to work with on his Udemy courses. If you’re an Eco Web Hosting customer, you may have seen my name before.
If not, hello!
I didn’t come to The Complete Web Developer Course as a complete beginner to web development.
I’d made a few static HTML sites in my late teens and spent the last couple of years working in the hosting industry, though until now, my focus had been mostly on supporting and maintaining the platforms, rather than development on them.
My last job meant I needed to know how to read PHP to an extent, but that extent was the writing of
<?php phpinfo(); ?>(this creates a diagnostic PHP page that lets you check various limits and settings in PHP).I’d never developed a project of my own in PHP though.
Rob had always managed Eco Web Hosting through the customer control panel and directly in the back end database, but there’s only so long a business can grow without an admin system to manage all the data.
It was time for a CRM. Here’s what I’ve learnt from my challenges so far.
Continue Reading