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How do I calculate someone's age in Java?
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JDK 8 makes this easy and elegant:
public class AgeCalculator {
public static int calculateAge(LocalDate birthDate, LocalDate currentDate) {
if ((birthDate != null) && (currentDate != null)) {
return Period.between(birthDate, currentDate).getYears();
...
How to install a specific version of a ruby gem?
...gem uninstall fog. It will ask you which version to uninstall if you have more than one.
– Dizzley
Jan 26 '14 at 18:18
3
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Java dynamic array sizes?
... created. You either have to allocate it bigger than you think you'll need or accept the overhead of having to reallocate it needs to grow in size. When it does you'll have to allocate a new one and copy the data from the old to the new:
int[] oldItems = new int[10];
for (int i = 0; i < 10; i++)...
Kill process by name?
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Assuming you're on a Unix-like platform (so that ps -A exists),
>>> import subprocess, signal
>>> import os
>>> p = subprocess.Popen(['ps', '-A'], stdout=subprocess.PIPE)
>>> out, err = p.communicate()
gives you ps -A's ou...
X-Frame-Options Allow-From multiple domains
...as been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
The modern alternative is the Content-Security-Policy header, which along many other pol...
How to dismiss the dialog with click on outside of the dialog?
I have implemented a custom dialog for my application. I want to implement that when the user clicks outside the dialog, the dialog will be dismissed.
What do I have to do for this?
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Why do we have map, fmap and liftM?
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map exists to simplify operations on lists and for historical reasons (see What's the point of map in Haskell, when there is fmap?).
You might ask why we need a separate map function. Why not just do away with the current
list-only map function, and rename fmap to m...
Regular expressions in an Objective-C Cocoa application
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Yes, there's no regex support in Cocoa. If you're only interested in boolean matching, you can use NSPredicate which supports ICU regex syntax. But usually you're interested in the position of the match or position of subexpressions, and you cannot ge...
How to check if anonymous object has a method?
...{
alert("It's undefined");
} else {
alert("It's neither undefined nor a function. It's a " + typeof myObj.prop2);
}
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How do you rebase the current branch's changes on top of changes being merged in?
Okay. If I'm on a branch (say working ), and I want to merge in the changes from another branch (say master ), then I run the command git-merge master while on the working branch, and the changes get merged in without rebasing the history at all. If I run git-rebase master , then the changes ...