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What is the meaning of polyfills in HTML5?
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A polyfill is a browser fallback, made in JavaScript, that allows functionality you expect to work in modern browsers to work in older browsers, e.g., to support canvas (an HTML5 feature) in older browsers.
It's sort of an HTML5 technique, since it ...
How should I choose an authentication library for CodeIgniter? [closed]
...e the answer to the OP's question. I'm going to go out on a limb here and call Tank Auth the best authentication library for CodeIgniter available today. It's a rock-solid library that has all the features you need and none of the bloat you don't:
Tank Auth
Pros
Full featured
Lean footprint (20 fi...
Does Python have a ternary conditional operator?
... mind that it's frowned upon by some Pythonistas for several reasons:
The order of the arguments is different from those of the classic condition ? a : b ternary operator from many other languages (such as C, C++, Go, Perl, Ruby, Java, Javascript, etc.), which may lead to bugs when people unfamilia...
What is Linux’s native GUI API?
...ystem will also have an entire "stack" of other software running on it, in order to provide a graphical user interface and other features. Each element of this stack will offer its own API.
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How to programmatically empty browser cache?
...s ctime, (or mtime), you can just add said time behind it. For instance in php, myfile.js?v=<?=filectime('myfile.js');?>, and there you've got yourself an auto updating cache for your resources.
– Pierre-Antoine Guillaume
Jan 2 '18 at 9:21
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Views vs Components in Ember.js
...able Components when a route is entered, instead of a controller/view. In order to future proof your app, it's best to stay away from Views.
Sources:
Road to Ember 2.0: https://github.com/emberjs/rfcs/pull/15
Future-proofing your Ember 1.x code: https://gist.github.com/samselikoff/1d7300ce59d21...
How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
... that can help with most deadlocks is sorting the operations in a specific order.
You get a deadlock when two transactions are trying to lock two locks at opposite orders, ie:
connection 1: locks key(1), locks key(2);
connection 2: locks key(2), locks key(1);
If both run at the same time, connecti...
SecurityError: Blocked a frame with origin from accessing a cross-origin frame
...o not use it. This else branch is
// here just for clarity, you usually shouldn't need it.
return;
}
});
This method can be applied in both directions, creating a listener in the main page too, and receiving responses from the frame. The same logic can also be implemented i...
Do asynchronous operations in ASP.NET MVC use a thread from ThreadPool on .NET 4
...time of execution is less compared to if you run them sequentially. But in order to run them you use worker threads. Well actually EF is lazy so when you do _context.Foo you are actually not executing anything. You are just building an expression tree. Be extremely careful with this. The query execu...
What is JSON and why would I use it?
...cord, struct, dictionary, hash table, keyed list, or associative array.
An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence.
JSON Structure
Here is an example of JSON data:
{
"firstName": "John",
"lastName": "Smith",
"add...