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How to delete images from a private docker registry?
I run a private docker registry, and I want to delete all images but the latest from a repository. I don't want to delete the entire repository, just some of the images inside it. The API docs don't mention a way to do this, but surely it's possible?
...
What is the purpose of Looper and how to use it?
...em.out.println("Hello from a thread!");
}
public static void main(String args[]) {
(new Thread(new HelloRunnable())).start();
}
}
Now, let's apply this simple principle to Android apps. What would happen if an Android app runs on normal thread? A thread called "main" or "UI" o...
How can I sort arrays and data in PHP?
...ray $b) {
return someFunction($a['baz']) - someFunction($b['baz']);
}
Strings
A shortcut for the first string comparison version:
function cmp(array $a, array $b) {
return strcmp($a['foo'], $b['foo']);
}
strcmp does exactly what's expected of cmp here, it returns -1, 0 or 1.
Spaceship oper...
Which is preferred: Nullable.HasValue or Nullable != null?
... what output it produced in labels:
int? val = null;
lbl_Val.Text = val.ToString(); //Produced an empty string.
lbl_ValVal.Text = val.Value.ToString(); //Produced a runtime error. ("Nullable object must have a value.")
lbl_ValEqNull.Text = (val == null).ToString(); //Produced "True" (without the qu...
Difference between setTimeout with and without quotes and parentheses
...CONTEXT), 2000);
Security
Although it's possible, you should not pass a string to setTimeout or setInterval. Passing a string makes setTimeout() or setInterval() use a functionality similar to eval() that executes strings as scripts, making arbitrary and potentially harmful script execution possi...
Android SDK on a 64-bit linux machine
...
Yes, it is. You need to install the ia32 libraries. Check out the Ubuntu Linux troubleshooting section.
apt-get install ia32-libs
apt-get install sun-java6-jdk
share
...
How to work around the lack of transactions in MongoDB?
...iewpoint (I have only worked with SQL databases so far), or whether it actually can't be done.
10 Answers
...
Why historically do people use 255 not 256 for database field magnitudes?
...char data (unless constrained otherwise). Most systems treat such an empty string as distinct from NULL, but some systems (notably Oracle) treat an empty string identically to NULL. For systems where an empty string is not NULL, an additional bit somewhere in the row would be needed to indicate whet...
Random float number generation
...it live):
#include <iostream>
#include <iomanip>
#include <string>
#include <map>
#include <random>
int main()
{
std::random_device rd;
//
// Engines
//
std::mt19937 e2(rd());
//std::knuth_b e2(rd());
//std::default_random_engine e2(rd())...
Scala downwards or decreasing for loop?
... answered Apr 11 '10 at 15:37
Randall SchulzRandall Schulz
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