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What is an optional value in Swift?
...ional<String>.
Everything Swift does with optionals is magic to make reading and writing code more fluent. Unfortunately this obscures the way it actually works. I'll go through some of the tricks later.
Note: I'll be talking about optional variables a lot, but it's fine to create optional con...
Folder structure for a Node.js project
... my project architecture you can see here:
├── Dockerfile
├── README.md
├── config
│ └── production.json
├── package.json
├── schema
│ ├── create-db.sh
│ ├── db.sql
├── scripts
│ └── deploy-production.sh
├── ...
iPhone Data Usage Tracking/Monitoring
...icated to different functions, voicemail, general networking interface.
I read in Apple forum that :
The OS does not keep network statistics on a process-by-process basis. As such, there's no exact solution to this problem. You can, however, get network statistics for each network interface.
In ge...
What is the purpose of the word 'self'?
...
I read all the other answers and sort of understood, I read this one and then it all made sense.
– Seth
Oct 8 '14 at 2:37
...
Share cookie between subdomain and domain
...
I'm not sure @cmbuckley answer is showing the full picture. What I read is:
Unless the cookie's attributes indicate otherwise, the cookie is
returned only to the origin server (and not, for example, to any
subdomains), and it expires at the end of the current session (a...
Runtime vs. Compile time
...rs, and when they can be caught.
Compile time:
string my_value = Console.ReadLine();
int i = my_value;
A string value can't be assigned a variable of type int, so the compiler knows for sure at compile time that this code has a problem
Run time:
string my_value = Console.ReadLine();
int i = in...
PHP: Storing 'objects' inside the $_SESSION
... Nice answer incorporating a lot of my own thoughts as I've been reading through this. The modern internet needs state. While some applications don't need state and make sense to make in a stateless manner, the modern internet relies on too many systems that are based on state (AKA: Log...
Reverting a single file to a previous version in git [duplicate]
...Say I modified a file 5 times and I want to go back to change 2, after I already committed and pushed to a repository.
5 An...
Why doesn't C have unsigned floats?
...question seems to be strange. Programmers sometimes think too much. Please read on...
12 Answers
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How do I mock the HttpContext in ASP.NET MVC using Moq?
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HttpContext is read-only, but it is actually derived from the ControllerContext, which you can set.
controller.ControllerContext = new ControllerContext( context.Object, new RouteData(), controller );
...