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Why is the use of alloca() not considered good practice?
...same fear of local arrays or recursion (in fact many people who will shout down alloca() will praise recursion because it "looks elegant"). I agree with Shaun's advice ("alloca() is fine for small allocations") but I disagree with the mindset that frames alloca() as uniquely evil among the 3 -- the...
What is the correct way to check for string equality in JavaScript?
...mmary of when to use the loose (==) vs strict (===) operators:
To boil down a whole lot of details to a few simple takeaways, and help you know whether to use == or === in various situations, here are my simple rules:
If either value (aka side) in a comparison could be the true or false ...
Python hashable dicts
... (in practice either approach should work, though this one might be slowed down by making an unneeded itermediate list -- fixable by s/items/iteritems/ -- assuming Python 2.* as you don't say;-).
– Alex Martelli
Jul 20 '09 at 4:48
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async at console app in C#? [duplicate]
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In most project types, your async "up" and "down" will end at an async void event handler or returning a Task to your framework.
However, Console apps do not support this.
You can either just do a Wait on the returned task:
static void Main()
{
MainAsync().Wait();...
Why would I prefer using vector to deque
...ge instances of vector may lead to unnecessary heap fragmentation (slowing down calls to new).
Also, as pointed out elsewhere on StackOverflow, there is more good discussion here: http://www.gotw.ca/gotw/054.htm .
share
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Getting “Warning! PATH is not properly set up” when doing rvm use 2.0.0 --default
...tories to $PATH, then those changes will push the directories added by rvm down from their first position. RVM, when invoked, will find that its ruby binary directories are not at the very beginning of $PATH and BAM! you'll get the warning :) .
I hope that makes things clear.
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Cropping an UIImage
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Not sure why it was down voted, I thought it was a good answer. The only thing I can think of is that it doesn't handle scaling so it will not work if you have @2x/@3x images and your function names don't match up.
– Willia...
Which characters are valid in CSS class names/selectors?
...wer links to explanation and demos showing how to use these names. Written down in CSS code, a class name may need escaping, but that doesn’t change the class name. E.g. an unnecessarily over-escaped representation will look different from other representations of that name, but it still refers to...
What is the benefit of using $() instead of backticks in shell scripts?
... not actually work, I haven't tested the functionality. So, if you vote me down for it, you've lost sight of the intent :-) It's meant just as an illustration as to how you can nest, not as a bug-free production-ready snippet.
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Check if a given key already exists in a dictionary
...y on dicts, was 363.235070 using "key in dict.keys()" and drastically went down to 0.260186 solely by removing the call for "keys()"
– Ido_f
Jan 26 '15 at 18:15
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