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How to subtract date/time in JavaScript? [duplicate]

I have a field at a grid containing date/time and I need to know the difference between that and the current date/time. What could be the best way of doing so? ...
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How do I check the difference, in seconds, between two dates?

There has to be an easier way to do this. I have objects that want to be refreshed every so often, so I want to record when they were created, check against the current timestamp, and refresh as necessary. ...
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How to define “type disjunction” (union types)?

One way that has been suggested to deal with double definitions of overloaded methods is to replace overloading with pattern matching: ...
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Plot a legend outside of the plotting area in base graphics?

... title says: How can I plot a legend outside the plotting area when using base graphics? 10 Answers ...
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Transaction isolation levels relation with locks on table

I have read about 4 levels of isolation: 3 Answers 3 ...
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Easiest way to compare arrays in C#

In Java, Arrays.equals() allows to easily compare the content of two basic arrays (overloads are available for all the basic types). ...
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Is it possible to use the instanceof operator in a switch statement?

I have a question of using switch case for instanceof object: 24 Answers 24 ...
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Does pandas iterrows have performance issues?

... Generally, iterrows should only be used in very, very specific cases. This is the general order of precedence for performance of various operations: 1) vectorization 2) using a custom cython routine 3) apply a) reductions that can be performed in cytho...
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Show diff between commits

I am using Git on Ubuntu 10.04 (Lucid Lynx). 11 Answers 11 ...
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Python-equivalent of short-form “if” in C++ [duplicate]

Is there a way to write this C/C++ code in Python? a = (b == true ? "123" : "456" ) 4 Answers ...