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Pythonic way to combine FOR loop and IF statement
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You can use generator expressions like this:
gen = (x for x in xyz if x not in a)
for x in g...
How to list all installed packages and their versions in Python?
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answered Oct 17 '12 at 17:31
Jeff LaFayJeff LaFay
11.4k1212 gold badges6868 silver badges9797 bronze badges
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Checking a Python module version at runtime
...ent or not). For the python stuff I write that has external dependencies (3rd party libraries), I write a script that users can run to check their python install to see if the appropriate versions of modules are installed.
For the modules that don't have a defined 'version' attribute, you can in...
记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...些警告信息：
WARNING: You are running on a NUMA machine. We suggest launching mongod like this to avoid performance problems: numactl –interleave=all mongod [other options]
当时我并不太清楚NUMA是什么东西，所以没有处理，只是把问题反馈给了运维人员，后...
What is pseudopolynomial time? How does it differ from polynomial time?
...t input.
For example, if the input to a sorting algorithm is an array of 32-bit integers, then the size of the input would be 32n, where n is the number of entries in the array. In a graph with n nodes and m edges, the input might be specified as a list of all the nodes followed by a list of all t...
Bold & Non-Bold Text In A Single UILabel?
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Update
In Swift we don't have to deal with iOS5 old stuff besides syntax is shorter so everyt...
Make a link open a new window (not tab) [duplicate]
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With pure HTML you can't influence this - every modern browser (= the user) has complete contro...
How to darken a background using CSS?
...ound-image and this?
– Petruza
Jan 13 '16 at 19:33
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@Petruza it seems that we have no choice but...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
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Using GHC 7.0.3, gcc 4.4.6, Linux 2.6.29 on an x86_64 Core2 Duo (2.5GHz) machine, compiling using ghc -O2 -fllvm -fforce-recomp for Haskell and gcc -O3 -lm for C.
Your C routine runs in 8.4 seconds (faster than your run probably because ...
ZSH complains about RVM __rvm_cleanse_variables: function definition file not found
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edited Sep 21 at 9:23
Grzegorz
3,8542121 silver badges3838 bronze badges
answered May 14 '12 at 14...