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jQuery pass more parameters into callback
...e two function declarations. The behavior differs a lot depending on JS runtime (read browser). Also try to compare the function name shown in stacktrace/breakpoint in Firebug.
– Ihor Kaharlichenko
May 25 '11 at 7:51
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How to insert a newline in front of a pattern?
How to insert a newline before a pattern within a line?
17 Answers
17
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add a string prefix to each value in a string column using Pandas
...r's solution (python 3.6.4):
df = pd.DataFrame({'col':['a', 0]*200000})
%timeit df['col'].apply(lambda x: f"str{x}")
117 ms ± 451 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)
%timeit 'str' + df['col'].astype(str)
112 ms ± 1.04 ms per loop (mean ± std. dev. of 7 runs, 10 loops each...
Execution of Python code with -m option or not
...ain code that is invoked on their execution as a script. An example is the timeit module:
Some python code is intended to be run as a module: (I think this example is better than the commandline option doc example)
$ python -m timeit '"-".join(str(n) for n in range(100))'
10000 loops, best of 3: ...
How to initialize private static members in C++?
...ialized: const integral types defined like this may be turned into compile time constants by the implementation. This isn't always what you want, since it ups the binary dependency: client code needs recompilation if the value changes.
– Steve Jessop
Oct 9 '08 ...
Convert a string representation of a hex dump to a byte array using Java?
I am looking for a way to convert a long string (from a dump), that represents hex values into a byte array.
24 Answers
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Calculate age given the birth date in the format YYYYMMDD
...thday) { // birthday is a date
var ageDifMs = Date.now() - birthday.getTime();
var ageDate = new Date(ageDifMs); // miliseconds from epoch
return Math.abs(ageDate.getUTCFullYear() - 1970);
}
Disclaimer: This also has precision issues, so this cannot be completely trusted either. It can...
int a[] = {1,2,}; Weird comma allowed. Any particular reason?
...(which, by the way, I do not do that often compared to the total amount of time I spend coding) seems rather trivial to me compared to having a clearly defined syntax.
– Giorgio
Aug 18 '11 at 6:10
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what is the most efficient way of counting occurrences in pandas?
...counts() should serve. By skipping the groupby machinery, you'll save some time. I'm not sure why count should be much slower than max. Both take some time to avoid missing values. (Compare with size.)
In any case, value_counts has been specifically optimized to handle object type, like your words,...
Postgres and Indexes on Foreign Keys and Primary Keys
... @Matthias - Ah, got it. Thanks. Yeah, I obviously didn't take time to read through the code. It wasn't critical enough to bother. The OP could've mentioned the limitations. Maybe I'll check it out again sometime.
– juanitogan
Mar 31 '17 at 1:23
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