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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的选择。
如此一来，数据库就彻底翻身做主人了，虽然系统仍然是轮询，但已经从轮询别人变成了轮询自己，效率不可相提并论，从强奸变成了自慰，还是有进步意义的。相应的，我们可以加快轮询的频率而不会造成太大的压...
Gets byte array from a ByteBuffer in java
...yte[bb.remaining()];
bb.get(b);
which is equivalent as per the ByteBuffer javadocs.
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Boolean vs boolean in Java
There are discussions around Integer vs int in Java. The default value of the former is null while in the latter it's 0 . How about Boolean vs boolean ?
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Kotlin Ternary Conditional Operator
...c
The distinction between expression and statement is important here. In Java/C#/JavaScript, if forms a statement, meaning that it does not resolve to a value. More concretely, you can't assign it to a variable.
// Valid Kotlin, but invalid Java/C#/JavaScript
var v = if (a) b else c
If you're c...
How to combine paths in Java?
Is there a Java equivalent for System.IO.Path.Combine() in C#/.NET? Or any code to accomplish this?
11 Answers
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Why should Java ThreadLocal variables be static
I was reading the JavaDoc for Threadlocal here
7 Answers
7
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Please explain some of Paul Graham's points on Lisp
...lanation is perfectly fine -- and he takes a shot at a comparison to C and Java, which I won't do -- but for some reason I really enjoy discussing this very topic once in a while, so -- here's my shot at an answer.
On points (3) and (4):
Points (3) and (4) on your list seem the most interesting and ...
Format a date using the new date time API
...calTime, how do you perform formatting without running into this exception java.time.temporal.UnsupportedTemporalTypeException: Unsupported field: DayOfWeek
– samuel owino
Jan 11 at 23:11
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startActivityForResult() from a Fragment and finishing child Activity, doesn't call onActivityResult
FirstActivity.Java has a FragmentA.Java which calls startActivityForResult() .
SecondActivity.Java call finish() but onActivityResult never get called which is
written in FragmentA.Java .
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How to set the java.library.path from Eclipse
How can I set the java.library.path for a whole Eclipse Project? I'm using a Java library that relies on OS specific files and need to find a .dll/ .so/ .jnilib . But the Application always exits with an error message that those files are not found on the library path.
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