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What is the best way to use a HashMap in C++?
...i.e. 6 years after C++11 it should be hard to find an STL that doesn't provide unordered_map. Thus, there is no reason to consider the non-standard hash_map.
– maxschlepzig
Feb 13 '17 at 10:42
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What is the most robust way to force a UIView to redraw?
... a viewController that then proceeds to do the following. from method viewDidLoad I fire off a URLRequest for data that is required by on of my subviews - a UIView subclass with drawRect overridden. When the data arrives from the cloud I start building my view hierarchy. the subclass in question get...
What is the purpose of the -m switch?
...a module located using -m is executed just as if its filename had been provided on the command line.
With -m more is possible, like working with modules which are part of a package, etc. That's what the rest of PEP 338 is about. Read it for more info.
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Why does ReSharper tell me “implicitly captured closure”?
...s you that the variables end and start stay alive as any of the lambdas inside this method stay alive.
Take a look at the short example
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
int i = 0;
Random g = new Random();
this.button1.Click += (sender, args) => this...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
...exes (like what pthread gives me or whatever the native system library provides) or a single one for an object.
5 Answers
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Performance optimization strategies of last resort [closed]
...problem-specific and fairly narrow. And almost all repeat the advice to avoid premature optimization.
34 Answers
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Git for beginners: The definitive practical guide
Ok, after seeing this post by PJ Hyett , I have decided to skip to the end and go with Git .
37 Answers
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What are transparent comparators?
... programs in some way so there was no consensus to add the feature. We decided that although it wouldn't be safe to add the feature unconditionally, it would be safe if it was disabled by default and only "opt in".
The key difference of the N3657 proposal (which was a last-minute revision by mysel...
What is in your .vimrc? [closed]
Vi and Vim allow for really awesome customization, typically stored inside a .vimrc file. Typical features for a programmer would be syntax highlighting, smart indenting and so on.
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What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
... slower than just deleting the attribute delete obj[attr]
Unsurprisingly, mid array Array.splice(index,0,data) is slow, very slow.
Surprisingly, Array.splice(index,1,data) has been optimized (no length change) and is 100x faster than just splice Array.splice(index,0,data)
unsurprisingly, the divLin...