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What is the difference between integration and unit tests?
...s still a unit test, but once you test for both I/O AND the content of the file, then you have yourself an integration test. When you test the output of a function within a service, it's a unit-test, but once you make a service call and see if the function result is the same, then that's an integrat...
Which is faster : if (bool) or if(int)?
...ngs like sign-extend to bring it to certain widths to put it on the stack, etc. (You can't push a byte.)
When the optimizer views the AST and does its magic, however, it looks at surrounding context and "knows" when it can replace code with something more efficient without changing semantics. So ...
Convert columns to string in Pandas
...on()
Out[13]: '{"0":"A","1":"A","2":"B"}'
Note: you can pass in a buffer/file to save this to, along with some other options...
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How to assign from a function which returns more than one value?
...the function you would have
x = desired_return_value_1 # (vector, matrix, etc)
y = desired_return_value_2 # (vector, matrix, etc)
returnlist = list(x,y...)
} # end of function
main program
x = returnlist[[1]]
y = returnlist[[2]]
...
Best way to test for a variable's existence in PHP; isset() is clearly broken
...ng them as though they were. However, since they can be iterated, counted, etc, a missing value is not the same as one whose value is null.
The answer in this case, is to use array_key_exists() instead of isset().
Since this is takes the array to check as a function argument, PHP will still raise ...
What is the difference between memoization and dynamic programming?
...? I will take over India first. I will become the Chief Minister of Delhi, etc. etc.
Bottom-up - You say I will become the CM of Delhi. Then will take over India, then all other countries in Asia and finally I will take over the world.
...
PHP multidimensional array search by value
...is did not work for me when the key in the $userdb did not start as 0,1, 2 etc.. and say the key are 1234,4566 etc. The resulting keys after the array_search are always 0,1,2 and so on
– Kaushtuv
Apr 11 '16 at 6:41
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MIT vs GPL license [closed]
...-subjective question to ask "what actions may I legally perform with these files I have obtained?" Under GPL, that set of actions is in fact a proper subset of what those actions would have been under MIT.
– antinome
Aug 15 '12 at 15:29
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Update a column value, replacing part of a string
...ensures that you're only replacing parts of strings that begin with http://etc/etc/ or string_to_be_replaced. For example, in the given answer, http://domain1.com/images/this/is/a/test would be affected, but foobar/http://domain1.com/images/ would not.
– Kyle Challis
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(Built-in) way in JavaScript to check if a string is a valid number
... numbers that may not be considered valid (overflow the type, too precise, etc). Also, regex is both slower and more complicated than just using the built-in mechanisms
– Joel Coehoorn
Dec 30 '14 at 18:18
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