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Difference between StringBuilder and StringBuffer
...Nov 18 '17 at 18:29
Raimund Krämer
1,03677 silver badges2626 bronze badges
answered Dec 10 '08 at 4:36
sblund...
Grab a segment of an array in Java without creating a new array on heap
I'm looking for a method in Java that will return a segment of an array. An example would be to get the byte array containing the 4th and 5th bytes of a byte array. I don't want to have to create a new byte array in the heap memory just to do that. Right now I have the following code:
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Generate unique random numbers between 1 and 100
How can I generate some unique random numbers between 1 and 100 using JavaScript?
29 Answers
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Volatile boolean vs AtomicBoolean
...n concurrently, i might be 5 afterwards, since the compiled code will be somewhat similar to this (except you cannot synchronize on int):
void incIBy5() {
int temp;
synchronized(i) { temp = i }
synchronized(i) { i = temp + 5 }
}
If a variable is volatile, every atomic access to it is ...
rails 3.1.0 ActionView::Template::Error (application.css isn't precompiled)
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By default Rails assumes that you have your files precompiled in the production environment, if you want use live compiling (compile your assets during runtime) in production you must set the config.assets.compile to true.
# config/environments/...
How can one change the timestamp of an old commit in Git?
... answers to How to modify existing, unpushed commits? describe a way to amend previous commit messages that haven't yet been pushed upstream. The new messages inherit the timestamps of the original commits. This seems logical, but is there a way to also re-set the times?
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How to enable PHP's openssl extension to install Composer?
I am trying to install Laravel in WAMP setup. I am getting a warning message for not enabling openssl which I had already done in WAMP.
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Import a module from a relative path
... for inclusion of modules relatively to the location of the script.
I assume that you want to do this, because you need to include a set of modules with your script. I use this in production in several products and works in many special scenarios like: scripts called from another directory or execu...
What languages are Windows, Mac OS X and Linux written in?
... many userland apps are in Python, KDE is all C++
All kernels will use some assembly code as well.
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How to convert byte array to string and vice versa?
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Your byte array must have some encoding. The encoding cannot be ASCII if you've got negative values. Once you figure that out, you can convert a set of bytes to a String using:
byte[] bytes = {...}
String str = new String(bytes, "UTF-8"); // for UTF-8 ...