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Create a tar.xz in one command
...which happens to be xz -z -. XZ is configured to compress (-z) the archive from standard input (-).
You redirect the output from xz to the tar.xz file.
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How can I suppress all output from a command using Bash?
...sn't any option for this program to be quiet. How can I prevent the script from displaying anything?
7 Answers
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How does Java handle integer underflows and overflows and how would you check for it?
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If it overflows, it goes back to the minimum value and continues from there. If it underflows, it goes back to the maximum value and continues from there.
You can check that beforehand as follows:
public static boolean willAdditionOverflow(int left, int right) {
if (right < 0 &...
How can I get the timezone name in JavaScript?
...ability to detect something like "America/New York." Is that even possible from JavaScript or is that something I am going to have to guestimate based on the offset?
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How can I tell if I'm running in 64-bit JVM or 32-bit JVM (from within a program)?
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How can you tell from the command line? If you are running 32-bit or 64-bit? Just curious.
– Xonatron
Feb 2 '12 at 20:33
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How to use subprocess popen Python
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subprocess.Popen takes a list of arguments:
from subprocess import Popen, PIPE
process = Popen(['swfdump', '/tmp/filename.swf', '-d'], stdout=PIPE, stderr=PIPE)
stdout, stderr = process.communicate()
There's even a section of the documentation devoted to helping use...
JavaScript OOP in NodeJS: how?
...thod borrowing" instead of vertical inheritance. You don't need to inherit from a "class" to use its method on your class. For instance:
var method = List.prototype;
function List() {
}
method.add = Array.prototype.push;
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var a = new List();
a.add(3);
console.log(a[0]) //3;
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Removing an element from an Array (Java) [duplicate]
Is there any fast (and nice looking) way to remove an element from an array in Java?
15 Answers
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What is the purpose of willSet and didSet in Swift?
... = 0 {
didSet {
print("The value of myProperty changed from \(oldValue) to \(myProperty)")
}
}
}
myProperty prints its old and new value every time it is modified. With just getters and setters, I would need this instead:
class Foo {
var myPropertyValue: Int = ...
Determine installed PowerShell version
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thank you! NB: On my XP where I manually upgraded from v1 Powershell, the actual folder and registry paths (misleadingly?!) reference v1 NOT v2. This is as others here specify, but it was the reason why I was so worried whether I had installed it. My path is ; C:\WINDOWS\sys...