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Test if executable exists in Python?
In Python, is there a portable and simple way to test if an executable program exists?
21 Answers
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Reorder levels of a factor without changing order of values
I have data frame with some numerical variables and some categorical factor variables. The order of levels for those factors is not the way I want them to be.
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Do you get charged for a 'stopped' instance on EC2? [closed]
Bit confused here, I have an on-demand instance but do I get charged even when I stop the instance?
4 Answers
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Nokogiri installation fails -libxml2 is missing
...is present, however, it doesn't differentiate between "libxml2 is missing" and "a compiler to test libxml2 is missing".
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Check if at least two out of three booleans are true
...ewer recently asked me this question: given three boolean variables, a, b, and c, return true if at least two out of the three are true.
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How to send a command to all panes in tmux?
...s with a huge scrollback. However, I want to script a way to send this command to all the panes in the various windows.
7 A...
Adding a Method to an Existing Object Instance
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In Python, there is a difference between functions and bound methods.
>>> def foo():
... print "foo"
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>>> class A:
... def bar( self ):
... print "bar"
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>>> a = A()
>>> foo
<function foo at 0x00A98D70>
>>&g...
How do I add a linker or compile flag in a CMake file?
I am using the arm-linux-androideabi-g++ compiler. When I try to compile a simple "Hello, World!" program it compiles fine. When I test it by adding a simple exception handling in that code it works too (after adding -fexceptions .. I guess it is disabled by default).
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How to secure RESTful web services?
... so they know the client is who they say they are. Clients generate certs and give them to you over a secure channel (like coming into your office with a USB key - preferably a non-trojaned USB key).
You load the public key of the cert client certificates (and their signer's certificate(s), if nec...
Nested using statements in C#
I am working on a project. I have to compare the contents of two files and see if they match each other precisely.
17 Answe...