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Get time difference between two dates in seconds
...w Date();
var seconds = (endDate.getTime() - startDate.getTime()) / 1000;
Or even simpler (endDate - startDate) / 1000 as pointed out in the comments unless you're using typescript.
The explanation
You need to call the getTime() method for the Date objects, and then simply subtract them and divide...
What is the difference between an abstract function and a virtual function?
...on and a virtual function? In which cases is it recommended to use virtual or abstract? Which one is the best approach?
27...
Casting vs using the 'as' keyword in the CLR
When programming interfaces, I've found I'm doing a lot of casting or object type conversion.
18 Answers
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Virtual Memory Usage from Java under Linux, too much memory used
...but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 gigabytes ... at least by one form of...
.gitignore exclude files in directory but not certain directories
This doesn't seem to be working. When I clone the project, there is no "application/cache" folder or "application/cache/folder" folder, etc...
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Is there a way to do method overloading in TypeScript?
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According to the specification, TypeScript does support method overloading, but it's quite awkward and includes a lot of manual work checking types of parameters. I think it's mostly because the closest you can get to method ove...
jQuery “Does not have attribute” selector?
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Use the :not() selector.
$('.funding-plan-container:not([data-timestamp])')
This, by the way, is a valid Selectors API selector, so it isn't specific to jQuery. It'll work with querySelectorAll() and in your CSS (given browser support).
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What is the best (and safest) way to merge a Git branch into master?
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How I would do this
git checkout master
git pull origin master
git merge test
git push origin master
If I have a local branch from a remote one, I don't feel comfortable with merging other branches than this one with the remote. Also I would not push my changes, until I'm...
How do I check what version of Python is running my script?
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This information is available in the sys.version string in the sys module:
>>> import sys
Human readable:
>>> print(sys.version) # parentheses necessary in python 3.
2.5.2 (r252:60911, Jul 31 2008, 17:28...
How do you delete an ActiveRecord object?
How do you delete an ActiveRecord object?
4 Answers
4
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