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What is the difference between IEqualityComparer and IEquatable?
...EqualityComparer<T>,
one could ask:
Is there a preferred way of testing two instances of T for equality, or are there several equally valid ways?
If there is only one way of testing two instances of T for equality, or if one of several methods is preferred, then IEquatable<T> wou...
JavaScript equivalent of PHP’s die
... alert(4);
});
The return will return to the main caller function test1(); and continue from there to test3();
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" dir="...
How do I create test and train samples from one dataframe with pandas?
...split the dataframe into two random samples (80% and 20%) for training and testing.
23 Answers
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What is the difference between mocking and spying when using Mockito?
...ly and occasionally, for example when dealing with legacy code." The unit testing space suffers from too many ways of doing the same thing.
– gdbj
Mar 22 '17 at 17:53
add a c...
What is the most efficient way to concatenate N arrays?
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I believe your test may have an error: the a.concat(b) test case seems to be needlessly making a copy of the array a then throwing it away.
– ninjagecko
Apr 22 '12 at 21:35
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Copy values from one column to another in the same table
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Short answer for the code in question is:
UPDATE `table` SET test=number
Here table is the table name and it's surrounded by grave accent (aka back-ticks `) as this is MySQL convention to escape keywords (and TABLE is a keyword in that case).
BEWARE, that this is pretty dangerous qu...
Binding arrow keys in JS/jQuery
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@NathanArthur Here I found two good online tools to test the keyboard keycodes: keycode.info asquare.net/javascript/tests/KeyCode.html unixpapa.com/js/key.html
– Riccardo Volpe
Aug 2 '17 at 21:53
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How to set environment variable or system property in spring tests?
I'd like to write some tests that check the XML Spring configuration of a deployed WAR. Unfortunately some beans require that some environment variables or system properties are set. How can I set an environment variable before the spring beans are initialized when using the convenient test style wi...
How can I write output from a unit test?
Any call in my unit tests to either Debug.Write(line) or Console.Write(Line) simply gets skipped over while debugging and the output is never printed. Calls to these functions from within classes I'm using work fine.
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Postgres: “ERROR: cached plan must not change result type”
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I got the same problem on Postgres 10 while running JUnit tests for spring+jpa application. Exception message: org.postgresql.util.PSQLException: ERROR: cached plan must not change result type. And all tests work like a charm, but only Repository.findById(). I don't change the schem...