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Git Blame Commit Statistics
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For any repo thats larger than a few commits the time this gem needs to do it's job is astronomical
– Erik Aigner
Jul 1 '15 at 10:27
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How can I obtain the element-wise logical NOT of a pandas Series?
...3.1:
In [119]: s = pd.Series([True, True, False, True]*10000)
In [10]: %timeit np.invert(s)
10000 loops, best of 3: 91.8 µs per loop
In [11]: %timeit ~s
10000 loops, best of 3: 73.5 µs per loop
In [12]: %timeit (-s)
10000 loops, best of 3: 73.5 µs per loop
As of Pandas 0.13.0, Series are n...
Move the most recent commit(s) to a new branch with Git
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This answer causes commits to be lost: next time you git rebase, the 3 commits will be silently discarded from newbranch. See my answer for details and safer alternatives.
– John Mellor
Apr 6 '16 at 22:47
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Alternative to itoa() for converting integer to string C++? [duplicate]
... @Chris Kaminski: My one tests did show the sprintf was a 5 to ten times faster, which is confirmed my Herb Sutter's own measurements. if you have tests with different results, I'm interested.
– paercebal
May 31 '10 at 9:08
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Uploading Files in ASP.net without using the FileUpload server control
...rns same file name for all files and hence save the first file n number of times. Any idea how to get over it?
– sohaiby
Apr 29 '15 at 9:12
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html onchange event not working
I am trying to do some experiment. What I want to happen is that everytime the user types in something in the textbox, it will be displayed in a dialog box. I used the onchange event property to make it happen but it doesn't work. I still need to press the submit button to make it work. I read abo...
Variable declaration placement in C
...ions of old, primitive C compilers. All modern languages recommend and sometimes even enforce the declaration of local variables at the latest point: where they're first initialized. Because this gets rid of the risk of using a random value by mistake. Separating declaration and initialization also ...
What is the purpose of willSet and didSet in Swift?
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The point seems to be that sometimes, you need a property that has automatic storage and some behavior, for instance to notify other objects that the property just changed. When all you have is get/set, you need another field to hold the value. With willSe...
Should I always use a parallel stream when possible?
...o a sequential one. Coordinating the threads takes a significant amount of time. I would use sequential streams by default and only consider parallel ones if
I have a massive amount of items to process (or the processing of each item takes time and is parallelizable)
I have a performance problem i...
Select first row in each GROUP BY group?
... benchmark is from 2011, I don't have the setup any more. But it was about time to run tests with pg 9.4 and pg 9.5 anyway. See details in the added answer.. You might add a comment with result from your installation below?
– Erwin Brandstetter
Jan 11 '16 at 6:...