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Python syntax for “if a or b or c but not all of them”
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238
If you mean a minimal form, go with this:
if (not a or not b or not c) and (a or b or c):
Wh...
Rails 3: I want to list all paths defined in my rails application
...l defined helper path functions (that are created from routes) in my rails 3 application, if that is possible.
5 Answers
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In CMake, how can I test if the compiler is Clang?
...also work correctly if a compiler wrapper like ccache is used.
As of CMake 3.0.0 the CMAKE_<LANG>_COMPILER_ID value for Apple-provided Clang is now AppleClang. To test for both the Apple-provided Clang and the regular Clang use the following if condition:
if (CMAKE_CXX_COMPILER_ID MATCHES "Cla...
ie8 var w= window.open() - “Message: Invalid argument.”
...ad a line like:
window.open('/somefile.html', 'a window title', 'width=300');
The problem was 'a window title' as it is not valid. It worked fine with the following line:
window.open('/somefile.html', '', 'width=300');
In fact, reading carefully I realized that Microsoft does not support...
Boolean.hashCode()
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1231 and 1237 are just two (sufficiently large) arbitrary prime numbers. Any other two large prime numbers would do fine.
Why primes?
Suppose for a second that we picked composite numbers (non-primes), say 1000 and 2000. When ...
Failed to build gem native extension (installing Compass)
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23 Answers
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Python timedelta in years
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Your best bet is to use the dateutil.relativedelta object, but that's a 3rd party module. If you want to know the datetime that was n years from some date (defaulting to right now), you can do the following::
from dateutil.relativedelta import relativedelta
def yearsago(years, from_date=None):...
Import Error: No module named numpy
...is question , but still one step behind. I have only one version of Python 3 installed on my Windows 7 ( sorry ) 64-bit system.
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Is there a way to suppress JSHint warning for one given line?
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3 Answers
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How to empty a list?
...bel with a new empty list:
del lst[:]
Here's an example:
lst1 = [1, 2, 3]
lst2 = lst1
del lst1[:]
print(lst2)
For the sake of completeness, the slice assignment has the same effect:
lst[:] = []
It can also be used to shrink a part of the list while replacing a part at the same time (but tha...