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Concurrent vs serial queues in GCD
...oncurrent: the code runs on a background thread but the main thread waits for it to finish, blocking any updates to the UI. The block can't assume that it's the only block running on that queue (I could have added another block using async a few seconds previously)
sync - serial: the code runs on a ...
Are loops really faster in reverse?
...'re both equally fast.
What takes time in ascending loops is evaluating, for each i, the size of your array. In this loop:
for(var i = array.length; i--;)
You evaluate .length only once, when you declare i, whereas for this loop
for(var i = 1; i <= array.length; i++)
you evaluate .length e...
What's the difference between tilde(~) and caret(^) in package.json?
... will update you to all future patch versions, without incrementing the minor version. ~1.2.3 will use releases from 1.2.3 to <1.3.0.
^version “Compatible with version”, will update you to all future minor/patch versions, without incrementing the major version. ^2.3.4 will use releases from ...
What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...ve heard that I should use homebrew but I'm not exactly sure what homebrew or macports does?
4 Answers
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Can every recursion be converted into iteration?
...erative one? Yes, absolutely, and the Church-Turing thesis proves it if memory serves. In lay terms, it states that what is computable by recursive functions is computable by an iterative model (such as the Turing machine) and vice versa. The thesis does not tell you precisely how to do the conversi...
How do you do block comments in YAML?
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YAML supports inline comments, but does not support block comments.
From Wikipedia:
Comments begin with the number sign ( # ), can start anywhere on a line, and continue until the end of the line
A comparison with JSON, also fr...
Break or return from Java 8 stream forEach?
When using external iteration over an Iterable we use break or return from enhanced for-each loop as:
13 Answers
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Exiting from python Command Line
...ut the string representation of the object. This is the default behaviour for any object returned. It's just that the designers thought people might try to type exit to exit the interpreter, so they made the string representation of the exit function a helpful message. You can check this behaviour b...
When should assertions stay in production code? [closed]
...re's a discussion going on over at comp.lang.c++.moderated about whether or not assertions, which in C++ only exist in debug builds by default, should be kept in production code or not.
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How to get the cuda version?
Is there any quick command or script to check for the version of CUDA installed?
19 Answers
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