大约有 46,000 项符合查询结果(耗时:0.0534秒) [XML]

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How to control the line spacing in UILabel

...when put in multiple lines in a UILabel ? We can set the frame, font size and number of lines. I want to reduce the gap between the two lines in that label. ...
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Email Address Validation in Android on EditText [duplicate]

How can we perform Email Validation on edittext in android ? I have gone through google & SO but I didn't find out a simple way to validate it. ...
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What's the difference between jQuery's replaceWith() and html()?

What's the difference between jQuery's replaceWith() and html() functions when HTML is being passed in as the parameter? 5 ...
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B-Tree vs Hash Table

In MySQL, an index type is a b-tree, and access an element in a b-tree is in logarithmic amortized time O(log(n)) . 5 Answ...
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How to make a background 20% transparent on Android

...alpha channel. For example, for red use #CCFF0000: <TextView ... android:background="#CCFF0000" /> In the example, CC is the hexadecimal number for 255 * 0.8 = 204. Note that the first two hexadecimal digits are for the alpha channel. The format is #AARRGGBB, where AA is the alpha cha...
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Non-static variable cannot be referenced from a static context

... You must understand the difference between a class and an instance of that class. If you see a car on the street, you know immediately that it's a car even if you can't see which model or type. This is because you compare what you see with t...
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File.separator vs FileSystem.getSeparator() vs System.getProperty(“file.separator”)?

...idden by calls to System.setProperty(String key, String value) or with command line parameters -Dfile.separator=/ File.separator gets the separator for the default filesystem. FileSystems.getDefault() gets you the default filesystem. FileSystem.getSeparator() gets you the separator character for ...
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Generating v5 UUID. What is name and namespace?

I've read the man page, but I do not undestand what name and namespace are for. 3 Answers ...
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Why does the lock object have to be static?

... a private static readonly object for locking in multi threading. I understand that private reduces the entry points to the locking object by tightening the encapsulation and therefore access to the most essential. ...
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Content Security Policy “data” not working for base64 Images in Chrome 28

...et a CSP header with the meta http-equiv header. I included a base64 image and I'm trying to make Chrome load the image. 2 ...