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Escaping regem>x m> string
I want to use input from a user as a regem>x m> pattern for a search over some tem>x m>t. It works, but how I can handle cases where user puts characters that have meaning in regem>x m>?
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Printing the last column of a line in a file
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One way using awk:
tail -f file.tm>x m>t | awk '/A1/ { print $NF }'
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RuntimeWarning: invalid value encountered in divide
... would one want to ignore a divide by zero or NaN?
– m>x m> squared
Nov 10 '17 at 14:38
7
@m>x m>squared Wh...
Can em>x m>isting virtualenv be upgraded gracefully?
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You can use the Python 2.6 virtualenv to "revirtual" the em>x m>isting directory. You will have to reinstall all the modules you installed though. I often have a virtual directory for developing a module, and virtualenv the same directory with many versions of Python, and it works just f...
Difference between this and self in JavaScript
...he value of self is window because JavaScript lets you access any property m>x m> of window as simply m>x m>, instead of window.m>x m>. Therefore, self is really window.self, which is different to this.
window.self === window; // true
If you're using a function that is em>x m>ecuted in the global scope and is not in...
How to list imported modules?
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import sys
sys.modules.keys()
An approm>x m>imation of getting all imports for the current module only would be to inspect globals() for modules:
import types
def imports():
for name, val in globals().items():
if isinstance(val, types.ModuleType):
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How to compile without warnings being treated as errors?
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If you are compiling linum>x m> kernel. For em>x m>ample, if you want to disable the warning that is "unused-but-set-variable" been treated as error. You can add a statement:
KBUILD_CFLAGS += $(call cc-option,-Wno-error=unused-but-set-variable,)
in your Mak...
Overloading Macro on Number of Arguments
...OO2)(__VA_ARGS__)
So if you have these macros:
FOO(World, !) # em>x m>pands to FOO2(World, !)
FOO(foo,bar,baz) # em>x m>pands to FOO3(foo,bar,baz)
If you want a fourth one:
#define GET_MACRO(_1,_2,_3,_4,NAME,...) NAME
#define FOO(...) GET_MACRO(__VA_ARGS__, FOO4, FOO3, FOO2)(__VA_ARGS__)
F...
Display number with leading zeros
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Em>x m>ample: print "%05d" % result['postalCode'] for a 5 digit postal code.
– Nick Woodhams
Jun 5 '12 at 12:08
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How to amend several commits in Git to change author
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mind em>x m>plaining this a bit more? not sure what filter branch is
– mam>x m> pleaner
Aug 23 '14 at 19:34
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