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Quickly reading very large tables as dataframes
... down. In my case, I am assuming I know the types of the columns ahead of time, the table does not contain any column headers or row names, and does not have any pathological characters that I have to worry about.
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Remove a fixed prefix/suffix from a string in Bash
...r used as delimiter which will break the whole command. 3) Calling sed two times is not necessary (you can -e 's///' -e '///' instead) and the pipe could also be avoided. For example, consider string='./ *' and/or prefix='./' and see it break horribly due to 1) and 2).
– Adrian...
Extract first item of each sublist
...ue and got curious about the performance of each solution.
Here's is the %timeit:
import numpy as np
lst = [['a','b','c'], [1,2,3], ['x','y','z']]
The first numpy-way, transforming the array:
%timeit list(np.array(lst).T[0])
4.9 µs ± 163 ns per loop (mean ± std. dev. of 7 runs, 100000 loops ...
What is INSTALL_PARSE_FAILED_NO_CERTIFICATES error?
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You saved my lots of time. Upgrading Android Studio caused nightmare of troubles. This was one of them. I wonder if SO wasn't around more than half of the Android Development would have died. Android Studio gives no clues about errors.
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What is a reasonable code coverage % for unit tests (and why)? [closed]
...d no
tests. He has a long way to go;
focusing on code coverage at this time
would be depressing and quite useless.
He’s better off just getting used to
writing and running some tests. He can
worry about coverage later.”
“The second programmer, on the other hand, is quite exper...
Convert Python program to C/C++ code? [closed]
...lain numerical code that doesn't interface with Python at all for the most time!). But other than that, yes, it can get you a pretty devent speedup.
– user395760
Jan 10 '11 at 19:00
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Streaming via RTSP or RTP in HTML5
...hieved something working so (besides response like mine would save me some time):
Basically use ffmpeg to change the container to HLS, most of the IPCams stream h264 and some basic type of PCM, so use something like that:
ffmpeg -v info -i rtsp://ip:port/h264.sdp -c:v copy -c:a copy -bufsize 1835k ...
How to output git log with the first line only?
...ck but on my computer it shows the full log as git log does (besides the time stamp).
9 Answers
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How to list the files inside a JAR file?
... over the file name; one could simply synchronize on the same object every time (or make the method synchronized), it's purely an optimization.
I would say that this is still a problematic solution, since there might be other parts in the code that use the FileSystem interface over the same files, ...
Transferring ownership of an iPhone app on the app store
...PDATE: THIS ANSWER IS OUT OF DATE. IT APPEARS TO HAVE BEEN CORRECT AT THE TIME IT WAS WRITTEN. THERE IS NO NEED TO DOWNVOTE IT, BUT DON'T BELIEVE IT EITHER!
Official answer is No. From the iTunes Connect FAQ:
I sold my app to another developer and can no longer distribute on the
App Store...