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Sort objects in ArrayList by date?
...ou don't want to change your model, like when you want to sort on several different properties. In that case, you can create comparator on the fly:
Collections.sort(myList, new Comparator<MyObject>() {
public int compare(MyObject o1, MyObject o2) {
return o1.getDateTime().compareTo(o2...
Empty set literal?
...
By all means, please use set() to create an empty set.
But, if you want to impress people, tell them that you can create an empty set using literals and * with Python >= 3.5 (see PEP 448) by doing:
>>> s = {*()} # or {*{}} or {*[]}
>>> print(s)
set()
this is b...
How to convert an integer to a string in any base?
...
If you need compatibility with ancient versions of Python, you can either use gmpy (which does include a fast, completely general int-to-string conversion function, and can be built for such ancient versions -- you may need t...
AngularJS : Difference between the $observe and $watch methods
...$scope changes in AngularJS. But couldn't understand what exactly is the difference between the two.
4 Answers
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Contains method for a slice
...nd mkb gave you a hint to use the binary search from the sort package. But if you are going to do a lot of such contains checks, you might also consider using a map instead.
It's trivial to check if a specific map key exists by using the value, ok := yourmap[key] idiom. Since you aren't interested ...
Running a command as Administrator using PowerShell?
You know how if you're the administrative user of a system and you can just right click say, a batch script and run it as Administrator without entering the administrator password?
...
How to construct a relative path in Java from two absolute paths (or URLs)?
...
Yep, it only works if the base path is a parent of the first path. If you need some hierarchical backward like "../../relativepath", it won't work. I found a solution: mrpmorris.blogspot.com/2007/05/…
– Aurelien Ribon
...
How to remove outliers from a dataset
...
Thanks for the help! I would think if R is capable of outputting the outliers in boxplot, I shouldn't have to do these intermediary calculations. As for deleting outliers, this is just for an assignment.
– Dan Q
Jan 24 '1...
remove objects from array by object property
...i < arrayOfObjects.length; i++) {
var obj = arrayOfObjects[i];
if (listToDelete.indexOf(obj.id) !== -1) {
arrayOfObjects.splice(i, 1);
}
}
All you need to do to fix the bug is decrement i for the next time around, then (and looping backwards is also an option):
for (var i ...
How do I convert a String to an int in Java?
...
String myString = "1234";
int foo = Integer.parseInt(myString);
If you look at the Java documentation you'll notice the "catch" is that this function can throw a NumberFormatException, which of course you have to handle:
int foo;
try {
foo = Integer.parseInt(myString);
}
catch (NumberF...