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Should I use multiplication or division?
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Python:
time python -c 'for i in xrange(int(1e8)): t=12341234234.234 / 2.0'
real 0m26.676s
user 0m25.154s
sys 0m0.076s
time python -c 'for i in xrange(int(1e8)): t=12341234234.234 * 0.5'
real 0m17.932s
user 0m16.481s
sys 0m0.048s...
Why compile Python code?
...mpile a Python script? You can run them directly from the .py file and it works fine, so is there a performance advantage or something?
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How to test if a string is JSON or not?
...JAX call, and the server will return either a JSON string with useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message.
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Disable a group of tests in rspec?
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To disable a tree of specs using RSpec 3 you can:
before { skip }
# or
xdescribe
# or
xcontext
You can add a message with skip that will show up in the output:
before { skip("Awaiting a fix in the gem") }
with RSpec 2:
before { pending }
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Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
Why do the following work?
3 Answers
3
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Regex to remove all (non numeric OR period)
I need for text like "joe ($3,004.50)" to be filtered down to 3004.50 but am terrible at regex and can't find a suitable solution. So only numbers and periods should stay - everything else filtered. I use C# and VS.net 2008 framework 3.5
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Is Ruby pass by reference or by value?
@user object adds errors to the lang_errors variable in the update_lanugages method.
when I perform a save on the @user object I lose the errors that were initially stored in the lang_errors variable.
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Catching error codes in a shell pipe
...til the first is known to be successful, then you probably need to use temporary files. The simple version of that is:
tmp=${TMPDIR:-/tmp}/mine.$$
if ./a > $tmp.1
then
if ./b <$tmp.1 >$tmp.2
then
if ./c <$tmp.2
then : OK
else echo "./c failed" 1>&...
Difference between DateTime and Time in Ruby
... the difference between DateTime and Time classes in Ruby and what factors would cause me to choose one or the other?
7...
How to do version numbers? [closed]
...em and thus could always be labeled as beta. But since it's going to be a corporate product I really don't want the "unstable watchout" on there. So how would you go about versioning? Is 1.0 stable? Should the build date be in the version number? Tell me what you guys think!
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