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How random is JavaScript's Math.random?
...re actually expected. If the random numbers are uniformly distributed in a range 1 to 10^n, then you would expect about 9/10 of the numbers to have n digits, and a further 9/100 to have n-1 digits.
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Maximum length of HTTP GET request
...'t impose any hard-coded limit on request length; but browsers have limits ranging on the 2 KB - 8 KB (255 bytes if we count very old browsers).
Is there a response error defined that the server can/should return if it receives a GET request exceeds this length?
That's the one nobody has ans...
Output data from all columns in a dataframe in pandas [duplicate]
... = 4):
pd.set_option('display.expand_frame_repr', False)
seq = np.arange(0, len(x.columns), ncol)
for i in seq:
print(x.loc[range(0, nrow), x.columns[range(i, min(i+ncol, len(x.columns)))]])
pd.set_option('display.expand_frame_repr', True)
(it depends on pandas and numpy, o...
How to Set Opacity (Alpha) for View in Android
...yButton.getBackground().setAlpha(128); // 50% transparent
Where the INT ranges from 0 (fully transparent) to 255 (fully opaque).
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How to shift a column in Pandas DataFrame
...required number first:
offset = 5
DF = DF.append([np.nan for x in range(offset)])
DF = DF.shift(periods=offset)
DF = DF.reset_index() #Only works if sequential index
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
... of an expression, the result is not mathematically defined or not in the range of
representable values for its type, the behavior is undefined. [ Note: most existing implementations of C++
ignore integer overflows. Treatment of division by zero, forming a remainder using a zero divisor, and ...
std::string to float or double
...throw exceptions: std::invalid_argument (if conversion failed) std::out_of_range (if out of the range)
– Jason Doucette
Feb 12 '15 at 23:21
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How to set DOM element as the first child?
... to append the fragment to a div . make your dom manipulation and then use Range.selectNodeContents() and Range.extractContents() to get back a fragment
– pery mimon
Feb 18 '18 at 23:17
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Should I use 'has_key()' or 'in' on Python dicts?
...ed;-) but also in performance, e.g.:
$ python -mtimeit -s'd=dict.fromkeys(range(99))' '12 in d'
10000000 loops, best of 3: 0.0983 usec per loop
$ python -mtimeit -s'd=dict.fromkeys(range(99))' 'd.has_key(12)'
1000000 loops, best of 3: 0.21 usec per loop
While the following observation is not alwa...
How to make the python interpreter correctly handle non-ASCII characters in string operations?
...eError: 'ascii' codec can't decode byte 0xc2 in position 1: ordinal not in range(128). Could it be that my orignal string is not in unicode? Well in any case. it needs
– adergaard
Aug 27 '09 at 16:11
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