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javascript: recursive anonymous function?
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(function foo() { foo(); })();
is a stack-blowing recursive function. Now, that said, you probably don't may not want to do this in general because there are some weird problems with various implementations of Javascript. (note — that's a fairly old comment; some/many/all of the problems desc...
How to exit from PostgreSQL command line utility: psql
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As of PostgreSQL 11 you can now type "quit" or "exit".
– aorth
Oct 19 '18 at 8:23
1
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Where can I download IntelliJ IDEA Color Schemes? [closed]
...com/ where there is a large collection of themes. There are 270 themes for now and the site is growing.
P.S.: Help me and other people — do not forget to upvote when you download themes from this site!
share
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Predicate in Java
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static boolean isEven(int num) {
return (num % 2) == 0; // simple
}
Now, given a List<Integer>, you can process only the even numbers like this:
List<Integer> numbers = Arrays.asList(1,2,3,4,5,6,7,8,9,10);
for (int number : numbers) {
if (isEven(number)) {
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How do I check the difference, in seconds, between two dates?
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if you want to compute differences between two known dates, use total_seconds like this:
import datetime as dt
a = dt.datetime(2013,12,30,23,59,59)
b = dt.datetime(2013,12,31,23,59,59)
(b-a).total_seconds()
86400.0
#note that seconds doesn't give you what you want:
(...
Can I recover a branch after its deletion in Git?
...bove - git checkout -b <branch> <sha>
– Snowcrash
May 29 '14 at 14:37
6
yea just scro...
Generating random integer from a range
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Nowadays this should be the answer. Pseudo-random number generation reference for more features.
– alextoind
Sep 28 '15 at 15:11
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No serializer found for class org.hibernate.proxy.pojo.javassist.Javassist?
...l-on-empty-beans=false
I'm using Spring Boot v1.3 with Hibernate 4.3
It now serializes the entire object and nested objects.
EDIT: 2018
Since this still gets comments I'll clarify here. This absolutely only hides the error. The performance implications are there. At the time, I needed something...
scala vs java, performance and memory? [closed]
....length()>2 && mapping.get(s) != null) b.add(mapping.get(s));
Now not only did I save the time it took me to type full variable names and curly braces (freeing me to spend 5 more seconds to think deep algorithmic thoughts), but I can also enter my code in obfuscation contests and potent...
How to pass a function as a parameter in Java? [duplicate]
...hod(Callable<T> func) {
return func.call();
}
This pattern is known as the Command Pattern.
Keep in mind you would be best off creating an interface for your particular usage. If you chose to go with callable, then you'd replace T above with whatever type of return value you expect, suc...