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What are important languages to learn to understand different approaches and concepts? [closed]
...ns and prove properties about it.
It has dependent types, that alone blew my mind. A simple example:
concatenate: forall (A:Set)(n m:nat), (array A m)->(array A n)->(array A (n+m))
is the signature of a function that concatenates two arrays of size n and m of elements of A and returns an a...
What is the purpose of willSet and didSet in Swift?
...needing another field. For instance, in that example:
class Foo {
var myProperty: Int = 0 {
didSet {
print("The value of myProperty changed from \(oldValue) to \(myProperty)")
}
}
}
myProperty prints its old and new value every time it is modified. With just ge...
Fastest way to list all primes below N
...o (requires numpy)
Many thanks to stephan for bringing sieve_wheel_30 to my attention.
Credit goes to Robert William Hanks for primesfrom2to, primesfrom3to, rwh_primes, rwh_primes1, and rwh_primes2.
Of the plain Python methods tested, with psyco, for n=1000000,
rwh_primes1 was the fastest tested....
Android: alternate layout xml for landscape mode
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My background image stretches out on landscape.I have layout-land and drawable-land..still it stretches out..I've tried using same image,9-patch images,mdpi,hdpi n all..still issue persists :(
– Prabs
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Can I set null as the default value for a @Value in Spring?
...l-value so it will work with what ever property placeholder.
public class MyObject {
private String value;
@Value("${stuff.value:@null}")
public void setValue(String value) {
if ("@null".equals(value)) this.value = null;
else this.value = value;
}
}
Personally I prefer m...
Create new tmux session from inside a tmux session
... Thanks for the very complete answer, this answered a few of my questions all at once!
– mdekkers
Jun 1 '18 at 4:33
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Make Div overlay ENTIRE page (not just viewport)?
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In my opinion, its just a really easy way to treat everything more as the same across browsers. Might not apply as much today as it did back before when adapting to IE5, but I still do it as one of the first things i write in a ...
How to add to an existing hash in Ruby
...
my_hash = {:a => 5}
my_hash[:key] = "value"
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Non-Singleton Services in AngularJS
...ate new objects.
and his example of returning instances from factories:
myApp.factory('myService', function () {
var MyThing = function () {};
MyThing.prototype.foo = function () {};
return {
getInstance: function () {
return new MyThing();
}
};
});
I would also argue his ...
What is the entry point of swift code execution?
... Sorry, I was wrong about Cocoa Touch but correct about Cocoa. See my updated answer
– nathan
Jun 8 '14 at 17:55
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