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Why does C++ compilation take so long?
...sands of headers to be (1) loaded and (2) compiled.
Every one of them typically has to be recompiled for every compilation unit,
because the preprocessor ensures that the result of compiling a header might vary between every compilation unit.
(A macro may be defined in one compilation unit which cha...
Why does (i
...cts. And while comparing objects, there isn't any need of
auto unboxing.
All the conditions are true, and you are not changing i and j in loop, so it is running infinitely.
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How does one capture a Mac's command key via JavaScript?
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EDIT: As of 2019, e.metaKey is supported on all major browsers as per the MDN.
Note that on Windows, although the ⊞ Windows key is considered to be the "meta" key, it is not going to be captured by browsers as such.
This is only for the command key on MacOS/keyboar...
Using wget to recursively fetch a directory with arbitrary files in it
... --cut-dirs=X (cuts out X directories). it's a bit annoying to have to manually count directories for X..
– lkraav
Nov 8 '10 at 21:49
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How to randomly pick an element from an array
... history. If it haven't, it's extremely predictable. It's not a problem at all in this case — but it should be mentioned that array[(int)(System.currentTimeMillis() % array.length)] is just as good as the proposed solution.
– alf
Nov 9 '11 at 13:42
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Get the size of the screen, current web page and browser window
... screenHeight , pageX , pageY , screenX , screenY which will work in all major browsers?
19 Answers
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Check if UIColor is dark or bright?
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This extension works with greyscale colors. However, if you are creating all your colors with the RGB initializer and not using the built in colors such as UIColor.black and UIColor.white, then possibly you can remove the additional checks.
extension UIColor {
// Check if the color is light ...
Generator Expressions vs. List Comprehension
...or slicing
print [5,6] + gen() # generators can't be added to lists
Basically, use a generator expression if all you're doing is iterating once. If you want to store and use the generated results, then you're probably better off with a list comprehension.
Since performance is the most common rea...
How to center canvas in html5
..., let me add a little bit more details.
The above properties will horizontally center the canvas, div or whatever other node you have relative to it's parent. There is no need to change the top or bottom margins and paddings. You specify a width and let the browser fill the remaining space with the...
Ruby on Rails vs ASP.NET MVC 3 for a .NET Guy? [closed]
... I used a great book to learn a while back, and it would be right up your alley: Rails for .Net Developers
Also, I wrote a post about going from MVC to RoR a while back as well.
As for comparisons, they both have strengths as has been covered, but here are a few that stick out to me:
I reall...