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Best practices for reducing Garbage Collector activity in Javascript
...s an animation, 30ms collections are probably causing stutter. You should start here to see what's going on in your environment: where the collection threshold is and how long your collections are taking. This gives you a reference point to assess optimizations. But you probably won't do better tha...
What is std::promise?
...he thread:
std::thread thr(std::move(tsk), 1.5, 'x', false);
The thread starts running immediately. We can either detach it, or have join it at the end of the scope, or whenever (e.g. using Anthony Williams's scoped_thread wrapper, which really should be in the standard library). The details of u...
Android ListView headers
... this, just cancel any collapse action and set all groups to expanded from start.
– Saito Mea
Nov 27 '12 at 18:50
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Are Exceptions in C++ really slow
...overhead as long as they are never thrown. Once you throw them, the misery starts. In this example, it is thrown for 0%, 1%, 10%, 50% and 90% of the cases. When the exceptions are thrown 90% of the time, the code is 8 times slower than the case where the exceptions are thrown 10% of the time. As you...
Is it possible to implement dynamic getters/setters in JavaScript?
...sting code that uses a more traditional approach. But it's good if you are starting from scratch. Surely not worthy a downvote...
– clami219
May 5 '15 at 12:02
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What is Mocking?
... and good posts on the web about mocking. One place that you might want to start looking is the post by Martin Fowler Mocks Aren't Stubs where he discusses a lot of the ideas of mocking.
In one paragraph - Mocking is one particlar technique to allow testing of a unit of code with out being reliant ...
How to avoid using Select in Excel VBA
... sense to use it. For example I was working with 2 workbooks and could not start a macro on one of the workbooks without activating it first. Could you elaborate a bit maybe? Also if for example I do not activate sheets when copying a range from one sheet to another, when I execute the program, it ...
How do you convert a byte array to a hexadecimal string, and vice versa?
...ither it is the same as 0F, or the input was clipped and F is actually the start of something you have not received. It is up to your context to make those assumptions, but I believe a general purpose function should reject odd characters as invalid instead of making that assumption for the calling ...
how to listen to N channels? (dynamic select statement)
to start an endless loop of executing two goroutines, I can use the code below:
5 Answers
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How does Access-Control-Allow-Origin header work?
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Whenever I start thinking about CORS, my intuition about which site hosts the headers is incorrect, just as you described in your question. For me, it helps to think about the purpose of the same origin policy.
The purpose of the same ...