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How do I detect whether a Python variable is a function?
I have a variable, x , and I want to know whether it is pointing to a function or not.
25 Answers
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Backbone.js get and set nested object attribute
...e navigation to the nested object. Basically, your callers don't need to know the model's internal structure; after all, it may change and the callers should be none the wiser.
– Bill Eisenhauer
Jun 15 '11 at 0:54
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Why aren't superclass __init__ methods automatically invoked?
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Right now, we have a rather long page describing the method resolution order in case of multiple inheritance: http://www.python.org/download/releases/2.3/mro/
If constructors were called automatically, you'd need another page of a...
C default arguments
... double x_out = in.x ? in.x : 3.14;
return f_base(i_out, x_out);
}
Now add a macro, using C's variadic macros. This way users don't have to know they're
actually populating a f_args struct and think they're doing the usual:
#define f(...) var_f((f_args){__VA_ARGS__});
OK, now all of the f...
super() raises “TypeError: must be type, not classobj” for new-style class
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And this is one of the reasons we now have Python 3.
– Steven Rumbalski
Mar 15 '12 at 15:09
2
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Is there a performance difference between i++ and ++i in C++?
...ent translation units. Compiler with g++ 4.5.
Ignore the style issues for now
// a.cc
#include <ctime>
#include <array>
class Something {
public:
Something& operator++();
Something operator++(int);
private:
std::array<int,PACKET_SIZE> data;
};
int main () {
S...
split string only on first instance of specified character
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Anyone know why I get an extra empty string element with this: in: "Aspect Ratio: 16:9".split(/:(.+)/) out: ["Aspect Ratio", " 16:9", ""]
– katy lavallee
May 8 '14 at 17:42
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How to len(generator()) [duplicate]
...'s no "infinity" integer in Python. And what about generators that don't know when they'll be done? To write an efficient __len__ method for a Goldbach's Conjecture generator, you'd first have to answer one of the biggest open questions in mathematics.
– Kevin J. Chase
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Counting inversions in an array
...14)
6 is in the 4th position of array B, thus there are 3 inversions. We know this because 6 was in the first position in array A, thus any lower value element that subsequently appears in array A would have an index of j > i (since i in this case is 1).
2.b: Remove A[1] from array A and also f...
How can I find and run the keytool
...ow these steps (for facebook apps)
Download the openssl for windows here
now unzip to c drive
open cmd prompt
type cd C:\Program Files\Java\jdk1.6.0_26\bin
then type only keytool -export -alias myAlias -keystore C:\Users\<your user name>\.android\myKeyStore | C:\openssl-0.9.8k_WIN32\bin\open...