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What does the “|” (single pipe) do in JavaScript?
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Bit comparison is so simple it's almost incomprehensible ;) Check out this "nybble"
8 4 2 1
-------
0 1 1 0 = 6 (4 + 2)
1 0 1 0 = 10 (8 + 2)
=======
1 1 1 0 = 14 (8 + 4 + 2)
Bitwise ORing 6 and 10 will give you 14:
alert(6 | 10); // should show 14
Terribly confus...
Using margin:auto to vertically-align a div
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I doubt about the 'infinite loop' statement.
– Barun
Jun 11 '14 at 16:07
110
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What is the purpose of “return await” in C#?
...continuations. You don't need async to do anything, but when doing just about any non-trivial asynchronous operation it's dramatically easier to work with. For example, the code you provided doesn't actually propagate errors as you'd want it to, and doing so properly in even more complex situation...
How to correctly use the extern keyword in C
My question is about when a function should be referenced with the extern keyword in C.
10 Answers
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Test if object implements interface
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@dsdsdsdsd Since this post I didn't even heard/read about it, but after looking up on Google I figured it out it is abbreviation of the Null Pointer Exception.
– ozanmuyes
May 24 '16 at 20:21
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Join/Where with LINQ and Lambda
... testing equality between the post ID column and the id parameter declared outside the query.
– Daniel Schaffer
May 27 '13 at 15:45
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What do the makefile symbols $@ and $< mean?
... Can I add to commandline options this: $@s to generate assembly-output such as name.os?
– huseyin tugrul buyukisik
Jul 30 '17 at 16:25
4
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GROUP_CONCAT ORDER BY
...p_concat(li.percentage ORDER BY li.views ASC) so that the percentages come out in the order that matches the views, as requested by the original post?
– Kai Carver
Jun 17 '14 at 13:30
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Remove blank attributes from an Object in Javascript
... delete obj[propName];
}
}
}
clean(test);
If you're concerned about this property removal not running up object's proptype chain, you can also:
function clean(obj) {
var propNames = Object.getOwnPropertyNames(obj);
for (var i = 0; i < propNames.length; i++) {
var propName = pr...
Painless way to install a new version of R?
... will load automatically every time R loads, and you don't have to worry about that any more. You can just install and load packages from the specified directory.
Finally, I have some small code included in my Rprofile.site allowing me to reinstall all packages when I install a new R version. You j...