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At runtime, find all classes in a Java application that extend a base class
...t is to use the ServiceLoader mechanism.
Also many people roll their own by having a file in a well known classpath location (i.e. /META-INF/services/myplugin.properties) and then using ClassLoader.getResources() to enumerate all files with this name from all jars. This allows each jar to export i...
Validating IPv4 addresses with regexp
...swered Mar 12 '11 at 18:08
Mark ByersMark Byers
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Select second last element with css
...iv you are trying to select. As Frosty has mentioned, CSS3 isn't supported by older browsers or IE. Jquery is a much better option if you are concerned about cross-browser computability.
– Thomas
Mar 24 '11 at 12:11
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Resetting remote to a certain commit
...y used git reset --hard to reset your master branch, you may need to start by using git reset --hard ORIG_HEAD to move your branch back to where it was before. (As always with git reset --hard, make sure that git status is clean, that you're on the right branch and that you're aware of git reflog a...
Why would one use nested classes in C++?
...anything exposed is part of the public API and must be maintained forever. By making the class private, I not only hide the implementation I am also saying this is mine and I may change it at any time so you can not use it.
Look at std::list or std::map they all contain hidden classes (or do they?)...
What is a Manifest in Scala and when do you need it?
...ems most suited to using type-classes in scala, and is well explained here by Debasish Ghosh:
http://debasishg.blogspot.com/2010/06/scala-implicits-type-classes-here-i.html
Context bounds can also just make the method signatures more readable. For example, the above function could be re-written us...
How to know the size of the string in bytes?
I'm wondering if I can know how long in bytes for a string in C#, anyone know?
3 Answers
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PHP namespaces and “use”
...ed with autoloading. A class is autoloaded (negating the need for include) by registering an autoloader (e.g. with spl_autoload_register). You might want to read PSR-4 to see a suitable autoloader implementation.
share
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Benchmarking small code samples in C#, can this implementation be improved?
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Here is the modified function: as recommended by the community, feel free to amend this its a community wiki.
static double Profile(string description, int iterations, Action func) {
//Run at highest priority to minimize fluctuations caused by other processes/threa...
NPM modules won't install globally without sudo
...utdated answer:
The fastest way without using sudo is like described here by isaac
I strongly encourage you not to do package management with sudo!
Packages can run arbitrary scripts, which makes sudoing a package
manager command as safe as a chainsaw haircut. Sure, it's fast and
definite...