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Using Emacs to recursively find and replace in text files not already open
... how do I try to found string "Collectible" in all file with extension java and hxx using findr.el?
– swdev
Jan 25 '11 at 4:57
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Appending an element to the end of a list in Scala
...he ListBuffer converted back (pretty much like String and StringBuilder in Java), but that's just a guess.
– Landei
Aug 9 '13 at 9:27
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select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...体数目可以cat /proc/sys/fs/file-max察看,一般来说这个数目和系统内存关系很大。
总结：
（1）select，poll实现需要自己不断轮询所有fd集合，直到设备就绪，期间可能要睡眠和唤醒多次交替。而epoll其实也需要调用epoll_wait不断轮询...
Java: Integer equals vs. ==
As of Java 1.5, you can pretty much interchange Integer with int in many situations.
7 Answers
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How does one create an InputStream from a String? [duplicate]
I'm not used to working with streams in Java - how do I create an InputStream from a String ?
6 Answers
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What causes javac to issue the “uses unchecked or unsafe operations” warning
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This comes up in Java 5 and later if you're using collections without type specifiers (e.g., Arraylist() instead of ArrayList<String>()). It means that the compiler can't check that you're using the collection in a type-safe way, using...
Immutability of Strings in Java
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+1 Here's an idea, immutable objects in java are like copy-by-value, you can have 2 references to a String, but you should consider them 2 separate Strings since it's immutable, and working with one of them won't affect the other
– Khaled.K
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What is a Question Mark “?” and Colon “:” Operator Used for? [duplicate]
...kipedia demonstrating how it works:
A traditional if-else construct in C, Java and JavaScript is written:
if (a > b) {
result = x;
} else {
result = y;
}
This can be rewritten as the following statement:
result = a > b ? x : y;
Basically it takes the form:
boolean statement ? true ...
When should we call System.exit in Java
In Java, What is the difference with or without System.exit(0) in following code?
10 Answers
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How does grep run so fast?
... functionality of GREP in shell, earlier I used to use substring method in java but now I use GREP for it and it executes in a matter of seconds, it is blazingly faster than java code that I used to write.(according to my experience I might be wrong though)
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