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Best way to define error codes/strings in Java?
...re's certainly a better implementation of the enum solution (which is generally quite nice):
public enum Error {
DATABASE(0, "A database error has occurred."),
DUPLICATE_USER(1, "This user already exists.");
private final int code;
private final String description;
private Error(int code...
How to set tbody height with overflow scroll
...
Finally! I'm now able to have a fixed height, scrolling table body, fixed headers, adjustable column widths .... all without javascript! Thank you!!
– Matt Hancock
Dec 6 '15 at 23:13
...
Applications are expected to have a root view controller at the end of application launch
... make sure self.window is initialized like self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
– Raptor
Feb 13 '12 at 12:07
1
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Creating and Update Laravel Eloquent
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There is and it's called firstOrNew / firstsOrCreate
– malhal
Aug 24 '14 at 11:59
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How to implement classic sorting algorithms in modern C++?
... transparent comparators of the form std::less<> that act polymorphically on their arguments. This avoids having to provide an iterator's type. This can be used in combination with C++11's default function template arguments to create a single overload for sorting algorithms that take < as ...
Javascript: Extend a Function
...ook like this:
function init(){
doSomething();
}
//anytime later
var old_init = init;
init = function() {
old_init.apply(this, arguments);
doSomethingHereToo();
};
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dealloc in Swift
..., namely to remove an NSNotificationCenter notification. Implementing dealloc results in a Swift compiler error:
5 Answ...
How can I discover the “path” of an embedded resource?
...
This will get you a string array of all the resources:
System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceNames();
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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...a transaction secure though? It seems it could be easily hacked to artificially increase counts. This could be bad for voting systems.
– Soviut
Apr 7 '14 at 6:10
16
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Finding three elements in an array whose sum is closest to a given number
...t now you don't need the target value anymore.
Clearly, if we simply test all possible 3-tuples, we'd solve the problem in O(n3) -- that's the brute-force baseline. Is it possible to do better? What if we pick the tuples in a somewhat smarter way?
First, we invest some time to sort the array, whic...