Questions tagged [callable-object]

A callable object is an object which also can act as a function. Some languages allow arrays, hash tables or strings to be functions.

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Spawning threads in a thread with callable object

I've seen this problem on multiple occasions, and it seems it occurs in both Windoes(visual studio) and Linux(gcc). Here is a streamlined version of it: class noncopyable { public: noncopyable(int n); ~noncopyable(); noncopyable(const…
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check if string variable name is a javascript fuction of an object

How to check if the string parameter passed in a function is too callable/function but not directly under window.. I know the open/ directly callable function can be checked using the syntax window['functionName'] But how about the member function…
Amit Shah
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How to Loop a string list?

I’m brand new to coding and have been teaching myself Python. I have been trying to create multiple shopping list, that I can print out in a f-string. My code keeps repeating the f-string by the number of items in the list. No matter what I try, I…
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how to make an instance of a class callable for multiple times using multiple sets of parentheses in one line

I would like to implement class 'Add' such that return the sum of the arguments passed in a separate set of parentheses using call method and inheritance in python. for example: >>>Add(10) 10 >>>Add(10)(11) 21 >>>Add(10)(11)(12) 33 I tried this…
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Explicit conversion of templated functors to specific functors

I have a callable struct Foo defined as struct Foo { template void operator()(T i) const { /* ... */ } }; and for reasons that are out of scope I would like to statically select which type to call it with avoiding the following…
fdev
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Python TypeError: 'list' object is not callable with a dict dictionary, if boolean

I have a dictionary that converts an index number to a node name. I am trying to check if the name is already in a list. I get an error list 'object not callable'. An image of my code is attached.
LindaK
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Functors and lambdas in C++

std::for_each(my_data.begin(), my_data.end(), [&result](const auto & what) { result += what; }); This is an answer that I got from Quora. I asked why did C++ adopt lambdas. Someone responded with these two pieces of code, the above using…
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