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Quickly reading very large tables as dataframes
... currently claims to be "1.5-2x slower" than data.table::fread).
read.csv.raw from iotools provides a third option for quickly reading CSV files.
Trying to store as much data as you can in databases rather than flat files. (As well as being a better permanent storage medium, data is passed to and...
How do I implement interfaces in python?
How do I implement Python equivalent of this C# code ?
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Thou shalt not inherit from std::vector
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Is there a way to instantiate objects from a string holding their class name?
...igning to it. Have a look at its documentation here. Finally, the use of a raw function pointer is also a bit oldish. Modern C++ code should be decoupled from specific functions / types. You may want to look into Boost.Function to look for a better way. It would look like this then (the map):
typed...
How can I build a small operating system on an old desktop computer? [closed]
...le system yet ... not even partition table parsing; so we'd just deal with raw ranges of blocks on the disk at first).
At that point your boot loader should be able to pull new code across the serial line, dump it into a partition (yes, implement partition table handling of some sort ... whether it...
How to remove convexity defects in a Sudoku square?
...gt; max_area:
max_area = area
best_cnt = cnt
cv2.drawContours(mask,[best_cnt],0,255,-1)
cv2.drawContours(mask,[best_cnt],0,0,2)
res = cv2.bitwise_and(res,mask)
Result :
3. Finding Vertical lines
kernelx = cv2.getStructuringElement(cv2.MORPH_RECT,(2,10))
dx = cv2.Sobe...
Can Retrofit with OKHttp use cache data when offline
...e Retrofit & OKHttp to cache HTTP responses. I followed this gist and, ended up with this code:
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Is MATLAB OOP slow or am I doing something wrong?
...re reference-counted, because they use copy-on-write and shared underlying raw data.
– Andrew Janke
Apr 19 '19 at 9:20
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How to detect shake event with android?
How can I detect a shake event with android? How can I detect the shake direction?
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What are the First and Second Level caches in Hibernate?
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