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How do I get the difference between two Dates in JavaScript?
...cation which lets you define events with a time frame. I want to automatically fill in the end date when the user selects or changes the start date. I can't quite figure out, however, how to get the difference between the two times, and then how to create a new end Date using that difference.
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MongoDB: Combine data from multiple collections into one..how?
..., reduce;
db.users_comments.remove();
// setup sample data - wouldn't actually use this in production
db.users.remove();
db.comments.remove();
db.users.save({firstName:"Rich",lastName:"S",gender:"M",country:"CA",age:"18"});
db.users.save({firstName:"Rob",lastName:"M",gender:"M",country:"US",age:"25...
How to use IntelliJ IDEA to find all unused code?
When I am in a .java file the unused code is usually grayed out or has a green underline saying this code will probably (probably because of some weird JNI/Reflection corner cases) be unused. But I have this project with thousands of Java files and I want to find ALL INSTANCES of such probable-unuse...
How can you profile a Python script?
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Python includes a profiler called cProfile. It not only gives the total running time, but also times each function separately, and tells you how many times each function was called, making it easy to determine where you should make optimizations.
You c...
How to deal with a slow SecureRandom generator?
If you want a cryptographically strong random numbers in Java, you use SecureRandom . Unfortunately, SecureRandom can be very slow. If it uses /dev/random on Linux, it can block waiting for sufficient entropy to build up. How do you avoid the performance penalty?
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Is there an easy way to return a string repeated X number of times?
...ing about a string (not a char). The other answers below this one are actually answering the question, but are rated much lower. I'm not trying to disrespect Ahmad's answer, but I think either the title of this question should be changed (if the question is actually regarding characters) or the ...
Splitting a list into N parts of approximately equal length
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This comment thread is really confusing as the answer has been edited several times. Is this a good answer? Not a good answer?
– conchoecia
Feb 21 '18 at 23:08
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GOBIN not set: cannot run go install
I am trying to install my custom package for my main.go file. However, when I ran
13 Answers
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How to search and replace globally, starting from the cursor position and wrapping around the end of
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Oh my god, what do all those arbitrary characters even mean. How did you learn that?
– rocky raccoon
Jun 16 '17 at 18:52
2
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How do I drop table variables in SQL-Server? Should I even do this?
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Table variables are automatically local and automatically dropped -- you don't have to worry about it.
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