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Is there a difference between using a dict literal and a dict constructor?
...nd STORE_MAP opcodes rather than generic CALL_FUNCTION:
> python2.7 -m timeit "d = dict(a=1, b=2, c=3, d=4, e=5)"
1000000 loops, best of 3: 0.958 usec per loop
> python2.7 -m timeit "d = {'a':1, 'b':2, 'c':3, 'd':4, 'e':5}"
1000000 loops, best of 3: 0.479 usec per loop
> python3.2 -m tim...
Why does calling a function in the Node.js REPL with )( work?
... to see it start a culture and become a feature in all languages. How many times have I typed )( instead of () in a hurry... :))
– geomagas
Oct 11 '13 at 13:48
18
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Creating a zero-filled pandas data frame
...
Testing this I find %timeit temp = np.zeros((10, 11)); d = pd.DataFrame(temp, columns = ['col1', 'col2',...'col11']) takes 156 us. But %timeit d = pd.DataFrame(0, index = np.arange(10), columns = ['col1', 'col2',...'col11']) takes 171 us. I'm sur...
How to remove illegal characters from path and filenames?
...he forseeable future, so all you're really doing is doubling the amount of time this function takes to run because you're worried that the definition of a valid path will change sometime soon. Which it won't.
– Warren Rumak
Jan 27 '14 at 19:09
...
Hg: How to do a rebase like git's rebase
...ntegrate it at first that didn't work out and I thought was useless at the time". Scientists keep logbooks in pen with numbered pages, and AFAIC software engineers should save every byte they've ever typed. Rewriting history, even cset parentage, but certainly CollapseExtension, HistEdit, etc. viol...
What does the C++ standard state the size of int, long type to be?
...ng long and pointer are 64-bit (but long and int are both 32-bit).
At one time, some Unix systems used an ILP64 organization.
None of these de facto standards is legislated by the C standard (ISO/IEC 9899:1999), but all are permitted by it.
And, by definition, sizeof(char) is 1, notwithstanding t...
Why would iterating over a List be faster than indexing through it?
...item2 -> item3 print item3
This is horribly inefficient because every time you are indexing it restarts from the beginning of the list and goes through every item. This means that your complexity is effectively O(N^2) just to traverse the list!
If instead I did this:
for(String s: list) {
...
Quickly create a large file on a Linux system
...the file contents)... And that initialization is what takes up so much I/O time. (Want to make it take even longer? Use /dev/random instead of /dev/zero! Then you'll use CPU as well as I/O time!) In the end though, dd is a poor choice (though essentially the default used by the VM "create" GUIs). E....
p vs puts in Ruby
...nd
# This increments nicely to give the dev some indication of progress / time until completion
>> ******
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In the shell, what does “ 2>&1 ” mean?
...; cat $testfile
Mon Jan 7 13:18:21 CET 2013
The file is overwritten each time, well now:
$ set -o noclobber
$ date > $testfile ; cat $testfile
bash: /tmp/testNoClobberDate-WW1xi9: cannot overwrite existing file
Mon Jan 7 13:18:21 CET 2013
$ date > $testfile ; cat $testfile
bash: /tmp/test...