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unbound method f() must be called with fibo_ instance as first argument (got classobj instance inste

... OK, first of all, you don't have to get a reference to the module into a different name; you already have a reference (from the import) and you can just use it. If you want a different name just use import swineflu as f. Second, you are...
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Error handling in C code

... your library as painless as possible think about these additions: store all possible error-states in one typedef'ed enum and use it in your lib. Don't just return ints or even worse, mix ints or different enumerations with return-codes. provide a function that converts errors into something huma...
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Mail multipart/alternative vs multipart/mixed

... I hit this challenge today and I found these answers useful but not quite explicit enough for me. Edit: Just found the Apache Commons Email that wraps this up nicely, meaning you don't need to know below. If your requirement is an emai...
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Disable individual Python unit tests temporarily

... so. You could just get this module and use it on your existing Python install. It will probably work. Before this, I used to rename the tests I wanted skipped to xtest_testname from test_testname. Here's a quick elisp script to do this. My elisp is a little rusty so I apologise in advance for ...
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How to determine if binary tree is balanced?

... some fraction of the minimum path length, like a half or a quarter. It really doesn't matter usually. The point of any tree-balancing algorithm is to ensure that you do not wind up in the situation where you have a million nodes on one side and three on the other. Donal's definition is fine in the...
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How can I perform a str_replace in JavaScript, replacing text in JavaScript?

...erf, you can have different levels of efficiency for creating a regex, but all of them are significantly slower than a simple string replace. The regex is slower because: Fixed-string matches don't have backtracking, compilation steps, ranges, character classes, or a host of other features that ...
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How do I check if a string is valid JSON in Python?

...SON. In general, the "Pythonic" philosophy for this kind of situation is called EAFP, for Easier to Ask for Forgiveness than Permission. share | improve this answer | follow...
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What's the need of array with zero elements?

... This is a way to have variable sizes of data, without having to call malloc (kmalloc in this case) twice. You would use it like this: struct bts_action *var = kmalloc(sizeof(*var) + extra, GFP_KERNEL); This used to be not standard and was considered a hack (as Aniket said), but it was s...
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How to specify different Debug/Release output directories in QMake .pro file

...ke things even easier to switch around, only define your DESTDIRs conditionally, and then use that value in all your other paths: OBJECTS_DIR = $${DESTDIR}/.obj. Cheers! – Xavier Holt Mar 7 '12 at 4:16 ...
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How do I expand a tuple into variadic template function's arguments?

... Here's my code if anyone is interested Basically at compile time the compiler will recursively unroll all arguments in various inclusive function calls <N> -> calls <N-1> -> calls ... -> calls <0> which is the last one and the compiler will o...