大约有 6,700 项符合查询结果（耗时：0.0223秒） [XML]
Transposing a NumPy array
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Personally, I find np.vstack() operation to be more explicit: print np.vstack(a).
– Alexander Pozdneev
Sep 21 '16 at 9:08
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Creating dataframe from a dictionary where entries have different lengths
...(Better)
But with %timeit on Jupyter, I've got a ratio of 4x speed for B vs A, which is quite impressive especially when working with a huge data set (mainly with a big number of columns/features).
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Does python have a sorted list?
...ared sortedcontainers against bisect: 0.0845024989976 for SortedList.add() vs 0.596589182518 for bisect.insort(), thus a difference of 7x in speed! And I expect the speed gap to increase with the list length since sortedcontainers insertion sort works in O(log n) while bisect.insort() in O(n).
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How to do ToString for a possibly null object?
...exactly what you want:
http://msdn.microsoft.com/en-us/library/astxcyeh(v=vs.80).aspx
Am I missing/misinterpreting something really obvious here?
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'git' is not recognized as an internal or external command
... This worked for me as well, because I was using Powershell inside VS Code. Re-opening the application did the trick. Thank you.
– Surjith S M
Sep 17 '18 at 12:17
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“cannot resolve symbol R” in Android Studio
...ference between the two. blog.stylingandroid.com/package-name-vs-application-id
– Tina
Feb 10 '18 at 13:11
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CSS, Images, JS not loading in IIS
...xt/css" href="~/Content/css/font-awesome.min.css" />
Explanation of ~ vs /:
/ - Site root
~/ - Root directory of the application
/ will return the root of the site (http://host.com/),
~/ will return the root of the application (http://host.com/app1/).
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How to fix .pch file missing on build?
...(pch) use is a two-step process.
In step one, you compile a stub file (In VS200x it's usually called stdafx.cpp. Newer versions use pch.cpp.). This stub file indirectly includes only the headers you want precompiled. Typically, one small header (usually stdafx.h or pch.hpp) lists standard headers s...
Most efficient way to reverse a numpy array
...ide of the loop. (Oh wait, it's very slightly faster. Repeatably 43.4 ms vs 44.3 ms for a 1000000 loop)
– endolith
May 16 '14 at 15:02
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Maven does not find JUnit tests to run
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I ran into this, watch out for tests vs test. The proper one is test
– Bruck Wubete
Nov 8 '19 at 17:00
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