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Why does Python code use len() function instead of a length method?
...on that is used to determine the size of a string, but I was wondering why it's not a method of the string object.
9 Answer...
Pandas selecting by label sometimes return Series, sometimes returns DataFrame
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Granted that the behavior is inconsistent, but I think it's easy to imagine cases where this is convenient. Anyway, to get a DataFrame every time, just pass a list to loc. There are other ways, but in my opinion this is the cleanest.
In [2]: type(df.loc[[3]])
Out[2]: pandas.core...
When are C++ macros beneficial? [closed]
The C preprocessor is justifiably feared and shunned by the C++ community. In-lined functions, consts and templates are usually a safer and superior alternative to a #define .
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Node.js - getting current filename
...follow
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edited Mar 6 '15 at 16:27
answered Feb 4 '15 at 10:31
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How to read a single character from the user?
... from the user input? For instance, they press one key at the terminal and it is returned (sort of like getch() ). I know there's a function in Windows for it, but I'd like something that is cross-platform.
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What is the id( ) function used for?
...s several questions:
What is the number returned from the function?
It is "an integer (or long integer) which is guaranteed to be unique and constant for this object during its lifetime." (Python Standard Library - Built-in Functions) A unique number. Nothing more, and nothing less. Think of ...
Windows threading: _beginthread vs _beginthreadex vs CreateThread C++
...nes. Once CreateThread() has returned, _beginthread/ex() takes care of additional bookkeeping to make the C runtime library usable & consistent in the new thread.
In C++ you should almost certainly use _beginthreadex() unless you won't be linking to the C runtime library at all (aka MSVCRT*.dl...
C++ compiling on Windows and Linux: ifdef switch [duplicate]
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this answer is sort of better in that it directly answers the question, instead of just providing a link to some 3rd site which may die one day
– Petr
Mar 6 '14 at 8:32
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How do I determine the size of an object in Python?
...results, but this does not
have to hold true for third-party
extensions as it is implementation
specific.
Only the memory consumption directly attributed to the object is
accounted for, not the memory consumption of objects it refers to.
The default argument allows to define
a value which will be re...
super() raises “TypeError: must be type, not classobj” for new-style class
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Alright, it's the usual "super() cannot be used with an old-style class".
However, the important point is that the correct test for "is this a new-style instance (i.e. object)?" is
>>> class OldStyle: pass
>>> inst...