大约有 42,000 项符合查询结果(耗时:0.0469秒) [XML]

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How can I resize an image dynamically with CSS as the browser width/height changes?

... This can be done with pure CSS and does not even require media queries. To make the images flexible, simply add max-width:100% and height:auto. Image max-width:100% and height:auto works in IE7, but not in IE8 (yes, another weird IE bug). To fix this, you...
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What are the differences between a pointer variable and a reference variable in C++?

I know references are syntactic sugar, so code is easier to read and write. 41 Answers ...
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What is the difference between a var and val definition in Scala?

What is the difference between a var and val definition in Scala and why does the language need both? Why would you choose a val over a var and vice versa? ...
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vertical-align with Bootstrap 3

I'm using Twitter Bootstrap 3, and I have problems when I want to align vertically two div , for example — JSFiddle link : ...
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What's the difference between `on` and `live` or `bind`?

... vs delegate. In future versions of jQuery, these methods will be removed and only on and one will be left. Examples: // Using live() $(".mySelector").live("click", fn); // Equivalent `on` (there isn't an exact equivalent, but with good reason) $(document).on("click", ".mySelector", fn); // ...
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C# difference between == and Equals()

...resolve to System.Object.ReferenceEquals. Equals is just a virtual method and behaves as such, so the overridden version will be used (which, for string type compares the contents). share | improve...
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When to call activity context OR application context?

...plicationContext() when you know why you are using getApplicationContext() and only when you need to use getApplicationContext(). To be blunt, "some programmers" use getApplicationContext() (or getBaseContext(), to a lesser extent) because their Java experience is limited. They implement an inner c...
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Find location of a removable SD card

...le via USB Mass Storage mode when mounted on a host machine", at least for Android 1.x and 2.x. But the question is about external SD. How to get a path like "/mnt/sdcard/external_sd" (it may differ from device to device)? Android has no concept of "external SD", aside from external storage, as de...
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In a PHP project, what patterns exist to store, access and organize helper objects? [closed]

How do you organize and manage your helper objects like the database engine, user notification, error handling and so on in a PHP based, object oriented project? ...
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What is the difference between “expose” and “publish” in Docker?

I'm experimenting with Dockerfiles, and I think I understand most of the logic. However, I don't see the difference between "exposing" and "publishing" a port in this context. ...