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What does “use strict” do in JavaScript, and what is the reasoning behind it?
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And:
Strict mode helps out in a couple ways:
It catches some common coding bloopers, throwing exceptions.
It prevents, or throws errors, when relatively "unsafe" actions are taken (such as gaining access to the global object).
It disables features that are confusing or poorly thoug...
When should I use a List vs a LinkedList
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Edit
Please read the comments to this answer. People claim I did not do
proper tests. I agree this should not be an accepted answer. As I was
learning I did some tests and felt like sharing them.
Original answer...
I found interesting resu...
Manually raising (throwing) an exception in Python
...error value) with sys.exc_info(), but this is way more error prone and has compatibility problems between Python 2 and 3, prefer to use a bare raise to re-raise.
To explain - the sys.exc_info() returns the type, value, and traceback.
type, value, traceback = sys.exc_info()
This is the syntax i...
deciding among subprocess, multiprocessing, and thread in Python?
...f module. It is more general than threads, as you can even perform remote computations. This is therefore the module I would suggest you use.
The subprocess module would also allow you to launch multiple processes, but I found it to be less convenient to use than the new multiprocessing module.
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Is mathematics necessary for programming? [closed]
...-ordinate geometry to put graphics on the screen.
I eventually went on to complete an honours degree in Pure Mathematics with a minor in Computer Science. Although I focused mainly on analysis, I also studied quite a bit of discrete maths, number theory, logic and computability theory. Apart from b...
Retaining file permissions with Git
... edited May 23 '17 at 12:26
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111 silver badge
answered Jul 8 '10 at 21:28
VonCVonC
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Why '&&' and not '&'?
...(CanExecute() && CanSave())
{
}
If CanExecute returns false, the complete expression will be false, regardless of the return value of CanSave. Because of this, CanSave is not executed.
This is very handy in the following circumstance:
string value;
if(dict.TryGetValue(key, out value) &am...
Why can't we have static method in a (non-static) inner class?
...n instance of its outer class and I know that it's kinda useless that we become able to declare static members within an inner class but I am still asking why not an inner class can declare static members?
– Kareem
Sep 28 '13 at 18:39
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How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...et_key_base: <%= ENV["SECRET_KEY_BASE"] %>
This means that Rails recommends you to use an environment variable for the secret_key_base in your production server. In order to solve this error you should follow these steps to create an environment variable for Linux (in my case Ubuntu) in your...
How to write the Fibonacci Sequence?
...lating the math form directly in your language, for example in Python it becomes:
def F(n):
if n == 0: return 0
elif n == 1: return 1
else: return F(n-1)+F(n-2)
Try it in your favourite language and see that this form requires a lot of time as n gets bigger. In fact, this is O(2n) in ...