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How does one reorder columns in a data frame?
How would one change this input (with the sequence: time, in, out, files):
11 Answers
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Close and Dispose - which to call?
...sposing a WCF Service I am wondering for classes such as SqlConnection or one of the several classes inheriting from the Stream class does it matter if I close Dispose rather than Close?
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Alternate FizzBuzz Questions [closed]
...east be able to give the idea behind how to do something.
Using this test one of my previous bosses saw everything from people who aced it all pretty quick, to people who could do most pretty quick, to one guy who couldn't answer a single one after a half hour.
I should also note: he let people us...
Delete all Duplicate Rows except for One in MySQL? [duplicate]
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Excellent solution. It worked perfectly. But I have one suggestion here we should swap the conditions. Instead of [WHERE n1.id > n2.id AND n1.name = n2.name] we should write [WHERE n1.name = n2.name AND n1.id > n2.id] it will improve performance if we have so much data.
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Detect if an element is visible with jQuery [duplicate]
... , I have been hiding/showing an element on my page, but with two buttons, one for hide and one for show. I now want to have one button to toggle both .
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How to get a Fragment to remove itself, i.e. its equivalent of finish()?
...ry.
Now currently I have a number of activities (A B C D) which chain onto one another, D has a button 'OK' which when pressed calls finish which then bubbles up through onActivityResult() to additionally destroy C and B.
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Why is there a difference in checking null against a value in VB.NET and C#?
...agation used by that language.
Update
Eric Lippert's blog articles (mentioned in his comments below) on semantics are now at:
Sep. 30, 2003 - A Whole Lot of Nothing
Oct. 1, 2003 - A Little More on Nothing
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Escape double quotes in parameter
...res spaces as value separators when passing parameters to programs:program one two "three and more" will pass three parameters to program.exe: one, two, and three and more.
Now to explain some of the confusion:
Double-quoted groups that appear directly adjacent to text not wrapped with doub...
Detect if a NumPy array contains at least one non-numeric value?
... need to write a function which will detect if the input contains at least one value which is non-numeric. If a non-numeric value is found I will raise an error (because the calculation should only return a numeric value). The number of dimensions of the input array is not known in advance - the fun...
What is the equivalent of MATLAB's repmat in NumPy
...better (official) NumPy for Matlab Users link - I'm afraid the mathesaurus one is quite out of date.
The numpy equivalent of repmat(a, m, n) is tile(a, (m, n)).
This works with multiple dimensions and gives a similar result to matlab. (Numpy gives a 3d output array as you would expect - matlab fo...