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How to check if a string contains only digits in Java [duplicate]
...ed matches, how to use this method to check if my string is having only digits using regular expression. I tried with below examples, but both of them returned me false as result.
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Can a recursive function be inline?
As I was reading this , found that the above code would lead to "infinite compilation" if not handled by compiler correctly.
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How to edit incorrect commit message in Mercurial? [duplicate]
I am currently using TortoiseHg (Mercurial) and accidentally committed an incorrect commit message. How do I go about editing this commit message in the repository?
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How to use classes from .jar files?
...a solution for my problem. I need to use a class from a jar file called jtwitter.jar, I downloaded the file, and tried executing it (I found out yesterday that .jar files can be executed by double clicking on them) and Vista gave me an error saying "Failed to load Main-Class Manifest attribute from ...
How to align absolutely positioned element to center?
I am trying to stack two canvas together and make it a double layers canvas.
7 Answers
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How to close TCP and UDP ports via windows command line
...sible. You don't have to be the current process owning the socket to close it. Consider for a moment that the remote machine, the network card, the network cable, and your OS can all cause the socket to close.
Consider also that Fiddler and Desktop VPN software can insert themselves into the networ...
What's the difference between using “let” and “var”?
I've heard it that it's described as a local variable, but I'm still not quite sure how it behaves differently than the var keyword.
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When to use CouchDB over MongoDB and vice versa
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Of C, A & P (Consistency, Availability & Partition tolerance) which 2 are more important to you? Quick reference, the Visual Guide To NoSQL Systems
MongodB : Consistency and Partition Tolerance
CouchDB : Availability and Partition Tolerance
A blog post...
Generate random int value from 3 to 6
Is it possible in Microsoft SQL Server generate random int value from Min to Max (3-9 example, 15-99 e.t.c)
10 Answers
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Check if a class has a member function of a given signature
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I'm not sure if I understand you correctly, but you may exploit SFINAE to detect function presence at compile-time. Example from my code (tests if class has member function size_t used_memory() const).
template<typename T>
struct HasUsedMemoryMethod
{
template<typename U,...