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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
...e other are more favorable to -Os optimizations.
Here are the results for time ./test 0 0 on several processors (user time reported):
Processor (System-on-Chip) Compiler Time (-O2) Time (-Os) Fastest
AMD Opteron 8350 gcc-4.8.1 0.704s 0.896s -O2
AM...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...ns in C, Python, Erlang and Haskell. In order to get some higher execution times, I search for the first triangle number with more than 1000 divisors instead of 500 as stated in the original problem.
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Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby
...pi.rubyonrails.org/classes/ActionView/Helpers/DateHelper.html
distance_of_time_in_words(3600)
=> "about 1 hour"
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How to write to a file, using the logging Python module?
How can I use the logging module in Python to write to a file? Every time I try to use it, it just prints out the message.
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Reverse a string in Python
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This is about 3 times slower.
– oneself
Oct 6 '17 at 15:09
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Why is reading lines from stdin much slower in C++ than Python?
...y, when an input stream is buffered, instead of reading one character at a time, the stream will be read in larger chunks. This reduces the number of system calls, which are typically relatively expensive. However, since the FILE* based stdio and iostreams often have separate implementations and t...
Bash command to sum a column of numbers [duplicate]
...wk since 2 tools are needed to do the job.
$ wc -l file
49999998 file
$ time paste -sd+ file | bc
1448700364
real 1m36.960s
user 1m24.515s
sys 0m1.772s
$ time awk '{s+=$1}END{print s}' file
1448700364
real 0m45.476s
user 0m40.756s
sys 0m0.287s
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Fast Linux File Count for a large number of files
...nd find call stat() when certain options are used, such as ls -l or find -mtime.
– mark4o
Jul 19 '10 at 23:46
7
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How do I get time of a Python program's execution?
...e program in Python that takes a while to finish. I want to know the exact time it takes to finish running.
31 Answers
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Display current date and time without punctuation
For example, I want to display current date and time as the following format:
5 Answers
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