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How to replace a hash key with another key

... hash[:new_key] = hash.delete :old_key share | improve this answer | follow | ...
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Python logging: use milliseconds in time format

.... This can not be fixed by specifying a datefmt because ct is a time.struct_time and these objects do not record milliseconds. If we change the definition of ct to make it a datetime object instead of a struct_time, then (at least with modern versions of Python) we can call ct.strftime and then we...
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Change MySQL default character set to UTF-8 in my.cnf?

...utf8 [mysql] default-character-set=utf8 [mysqld] collation-server = utf8_unicode_ci init-connect='SET NAMES utf8' character-set-server = utf8 If you want to change the character set for an existing DB, let me know... your question didn't specify it directly so I am not sure if that's what you w...
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Fatal error in launcher: Unable to create process using “”C:\Program Files (x86)\Python33\python.exe

... Here's how I solved it: open pip.exe in 7zip and extract __main__.py to Python\Scripts folder. In my case it was C:\Program Files (x86)\Python27\Scripts Rename __main__.py to pip.py Run it! python pip.py install something EDIT: If you want to be able to do pip install something...
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How to efficiently compare two unordered lists (not sets) in Python?

... objects are not unhashable per se. You just have to implements a sensible __hash__, but that might be impossible for collections. – Jochen Ritzel Oct 19 '11 at 22:23 ...
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To underscore or to not to underscore, that is the question

... I use _ only for private fields, however I almost never have private fields due to 3.5 auto property. Generally the only time I have a private field is if I implement lazy loading on non-primitive types. – Chr...
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Invert “if” statement to reduce nesting

... clearer. For example: double getPayAmount() { double result; if (_isDead) result = deadAmount(); else { if (_isSeparated) result = separatedAmount(); else { if (_isRetired) result = retiredAmount(); else result = normalPayAmount(); }; ...
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Guava equivalent for IOUtils.toString(InputStream)

...se CharStreams.toString(new InputStreamReader(supplier.get(), Charsets.UTF_8)) This code is problematic because the overload CharStreams.toString(Readable) states: Does not close the Readable. This means that your InputStreamReader, and by extension the InputStream returned by supplier.get(...
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Private and Protected Members : C++

...ou want the derived classes to be able to see. class A { private: int _privInt = 0; int privFunc(){return 0;} virtual int privVirtFunc(){return 0;} protected: int _protInt = 0; int protFunc(){return 0;} public: int _publInt = 0; int publFunc() { return privV...
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What is the size of an enum in C?

... having only that, the following is valid i think: enum { LAST = INT_MAX, LAST1, LAST2 }; so LAST2 is not representable in int, but there wasn't an expression defining it. – Johannes Schaub - litb Dec 14 '08 at 1:33 ...