大约有 42,000 项符合查询结果（耗时：0.0531秒） [XML]
Why does Clojure have “keywords” in addition to “symbols”?
... Clojure documentation for Keywords and Symbols.
Keywords are symbolic identifiers that evaluate to themselves. They provide very fast equality tests...
Symbols are identifiers that are normally used to refer to something else. They can be used in program forms to refer to function paramete...
HTML5 Video Dimensions
I'm trying to get the dimensions of a video of which I'm overlaying onto a page with JavaScript, however it is returning the dimensions of the poster image instead of the actual video as it seems it's being calculated before the video is loaded.
...
In Android, how do I set margins in dp programmatically?
... is your parent layout ex. <linearlayout><relativelayout><gridlayout> and you are working with grid layout. then, you need to use relativelayout.layoutparams
– Sruit A.Suk
Jun 15 '15 at 22:52
...
Allow Google Chrome to use XMLHttpRequest to load a URL from a local file
...quest is made from a local file. Also, about '.exe', nothing in the Q is said about Windows. Pim is a Windows dev, but still, nothing said about Windows.
– user142019
Jan 27 '11 at 16:40
...
“Variable” variables in Javascript?
... single solution for this (well, there is eval, but lets not seriously consider that). It is possible to access some global variables dynamically via window, but that doesn't work for variables local to a function. Global variables that do not become a property of window are variables defined with l...
Stop/Close webcam which is opened by navigator.getUserMedia
...eveloper will have to access the tracks that make up the stream (audio or video) and stop each of them individually.
More info here: https://developers.google.com/web/updates/2015/07/mediastream-deprecations?hl=en#stop-ended-and-active
Example (from the link above):
stream.getTracks().forEach...
css z-index lost after webkit transform translate3d
...
This might be related to: https://bugs.webkit.org/show_bug.cgi?id=61824
Basically when you apply a 3D transform on the z-axis, the z-index can't be accounted for anymore (you're now in a 3 dimensional rendering plane, use different z-values). If you want to switch back to 2D rendering f...
Stop an input field in a form from being submitted
...could insert input fields without "name" attribute:
<input type="text" id="in-between" />
Or you could simply remove them once the form is submitted (in jQuery):
$("form").submit(function() {
$(this).children('#in-between').remove();
});
...
Using “this” with class name
I am doing Android programming and was learning about Intents, when I saw a constructor that, to my C# trained mind, seemed funky. The call was:
...
Search for all occurrences of a string in a mysql database [duplicate]
...l in a database. I want to search all tables and all fields. But I have no idea where to start or if it's even possible.
17...