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Using -performSelector: vs. just calling the method
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Basically performSelector allows you to dynamically determine which selector to call a selector on the given object. In other words the selector need not be determined before runtime.
Thus even though these are equivalent:
[...
Is it bad practice to have a constructor function return a Promise?
...should go in a method of your class. You want to mutate global state? Then call that procedure explicitly, not as a side effect of generating an object. This call can go right after the instantiation:
var engine = new Engine()
engine.displayPosts();
If that task is asynchronous, you can now easil...
Do you have to put Task.Run in a method to make it async?
...nology: "asynchronous" (async) means that it may yield control back to the calling thread before it starts. In an async method, those "yield" points are await expressions.
This is very different than the term "asynchronous", as (mis)used by the MSDN documentation for years to mean "executes on a ba...
Difference between Grunt, NPM and Bower ( package.json vs bower.json )
... if it's late 2017 this answer might not be up to date anymore!
Beginners can quickly get lost in choice of build tools and workflows, but what's most up to date in 2016 is not using Bower, Grunt or Gulp at all! With help of Webpack you can do everything directly in NPM!
Google "npm as build tool...
Why XML-Serializable class need a parameterless constructor
...d fields and properties only after acquiring an instance to populate.
You can make your constructor private or internal if you want, just so long as it's parameterless.
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What is the recommended approach towards multi-tenant databases in MongoDB?
...in terms of how many tenants I'd have yet, but I would like to be able to scale into the thousands.
6 Answers
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Why am I merging “remote-tracking branch 'origin/develop' into develop”?
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git pull is probably creating the commit. If you make a local commit and then run git pull after someone else pushes a commit up to the repository, Git downloads the other developer's commit and then merges it into your local branch.
How to avoid these merge commits in the future
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What is the lifetime of a static variable in a C++ function?
...s scope it is only initialized once and retains its value between function calls. What exactly is its lifetime? When do its constructor and destructor get called?
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How can I assign an ID to a view programmatically?
In an XML file, we can assign an ID to a view like android:id="@+id/something" and then call findViewById() , but when creating a view programmatically, how do I assign an ID?
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Looking for a clear definition of what a “tokenizer”, “parser” and...
...ually by looking for whitespace (tabs, spaces, new lines).
A lexer is basically a tokenizer, but it usually attaches extra context to the tokens -- this token is a number, that token is a string literal, this other token is an equality operator.
A parser takes the stream of tokens from the lexer a...