大约有 47,000 项符合查询结果(耗时:0.0523秒) [XML]

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What is the difference between :first-child and :first-of-type?

...g at have all been divs, but bear with me, I'll get to that in a bit. For now, the converse also holds true: any :first-child is also :first-of-type by necessity. Since the first child here is also the first div, it will match both pseudo-classes, as well as the type selector div: <div class="p...
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Custom toast on Android: a simple example

... I also don't know the purpose of the root view (null), but in the official docs is present too, if someone can explain why, would be great! developer.android.com/guide/topics/ui/notifiers/toasts#java – Nestor Perez ...
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Professional jQuery based Combobox control? [closed]

... some usability issues with this control, but as a user I don't think I'd know to start typing for the dropdownlist to turn into a textbox. I much prefer the Combo Dropdown Box, but it still has some features that I'd want and it's still in alpha. The only think I don't like about this other than i...
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How to Create Grid/Tile View?

...o create masonry layout. Alternatively, you can use CSS3 columns. But for now jQuery based plugin is the best choice since there is compatibility issue with CSS3 column. share | improve this answer...
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What is the relationship between Looper, Handler and MessageQueue in Android?

... It's widely known that it's illegal to update UI components directly from threads other than main thread in android. This android document (Handling Expensive Operations in the UI Thread) suggests the steps to follow if we need to start a...
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What happens to C# Dictionary lookup if the key does not exist?

...corresponding value } else { // Key wasn't in dictionary; "value" is now 0 } (Using ContainsKey and then the the indexer makes it look the key up twice, which is pretty pointless.) Note that even if you were using reference types, checking for null wouldn't work - the indexer for Dictionary...
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Jelly Bean DatePickerDialog — is there a way to cancel?

... if (mCallBack != null) mDatePicker.clearFocus(); super.onStop(); } Now if someone can tell me how I can propose a patch/bug report to Android, I'd be glad to. Meanwhile, I suggested a possible fix (simple) as an attached version of DatePickerDialog.java in the Issue there. Concept to avoid ...
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Reopen last closed tab in Visual Studio

...studio.com/… which includes the Power Commands. It‘s not working right now as I‘m writing and the bug report is here github.com/Microsoft/VS-PPT/issues/208 – bugybunny Nov 8 '18 at 7:10 ...
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How do I copy SQL Azure database to my local development server?

Does anyone know how I can copy a SQL Azure database to my development machine? I'd like to stop paying to have a development database in the cloud, but it's the best way to get production data. I copy my production database to a new development database but I'd like to have that same database local...
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Git - What is the difference between push.default “matching” and “simple”

I have been using git for a while now, but I have never had to set up a new remote repo myself and I have been curious on doing so. I have been reading tutorials and I am confused on how to get "git push" to work. ...