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How do you copy the contents of an array to a std::vector in C++ without looping?
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了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
... printf(“Path is a directory : %d\n”, S_ISDIR(s1.st_mode));
return 0;
}
对于 I/O 操作较多的程序，这样的不一致就意味着需要进行大量的工程工作才能在平台间移植代码。正是因为这个原因，我们才引入了 Boost Filesystem Library。这个广...
How to detect page zoom level in all modern browsers?
...p this page to test all these methods of measuring the zoom level.
Edit (2011-12-12): I've added a project that can be cloned: https://github.com/tombigel/detect-zoom
IE8: screen.deviceXDPI / screen.logicalXDPI (or, for the zoom level relative to default zoom, screen.systemXDPI / screen.logicalXD...
How to add a filter class in Spring Boot?
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answered Jun 5 '15 at 5:09
Haim RamanHaim Raman
9,74055 gold badges3434 silver badges5858 bronze badges
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How expensive is the lock statement?
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Here is an article that goes into the cost. Short answer is 50ns.
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Access-Control-Allow-Origin Multiple Origin Domains?
...oogle.com|staging.google.com|development.google.com|otherdomain.example|dev02.otherdomain.example)$" AccessControlAllowOrigin=$0
Header add Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
Header merge Vary Origin
</IfModule>
</FilesM...
Find object by id in an array of JavaScript objects
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1309
Use the find() method:
myArray.find(x => x.id === '45').foo;
From MDN:
The find() met...
ImageView - have height match width?
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Update: Sep 14 2017
According to a comment below, the percent support library is deprecated as of Android Support Library 26.0.0. This is the new way to do it:
<android.support.constraint.ConstraintLayout
android:layout_width="match...
php var_dump() vs print_r()
...$obj) will display below output in the screen.
object(stdClass)#1 (3) {
[0]=> string(12) "qualitypoint"
[1]=> string(12) "technologies"
[2]=> string(5) "India"
}
And, print_r($obj) will display below output in the screen.
stdClass Object (
[0] => qualitypoint
[1] => technolo...
Add new value to an existing array in JavaScript [duplicate]
...e.push.call(obj, 'value');
will create an object that looks like:
{
0: 'value',
length: 1
}
You can access the vaules just like a normal array f.ex obj[0].
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