what is the difference between function declaration and signature?
A function signature is the parts of the function declaration that the compiler uses to perform overload resolution. Since multiple functions might have the same name (ie., they're …
How can I return two values from a function in Python?
I would like to return two values from a function in two separate variables. What would you expect it to look like on the calling end? You can't write a = select_choice(); b = select_choice() …
language agnostic - What is a callback function? - Stack Overflow
May 5, 2009 · A callback function is a function which is: accessible by another function, and is invoked after the first function if that first function completes A nice way of imagining how a …
r - Error: could not find function "%>%" - Stack Overflow
May 15, 2015 · For the meaning of the operator %>% you might want to consider this question: What does %>% function mean in R? Note that the same operator would also work with the …
How can I solve the error LNK2019: unresolved external symbol
I get this error, but I don't know how to fix it. I'm using Visual Studio 2013. I made the solution name MyProjectTest This is the structure of my test solution: -function.h #ifndef …
How to apply custom function to pandas data frame for each row
Nov 1, 2016 · I want to apply a custom function and create a derived column called population2050 that is based on two columns already present in my data frame. import pandas …
c++ - Function passed as template argument - Stack Overflow
When the function is used in a template parameter it 'decays' into a pointer to the passed function. It's analagous to how arrays decay into pointers when passed as arguments to parameters. Of …
Returning multiple values from a C++ function - Stack Overflow
Aug 19, 2015 · Is there a preferred way to return multiple values from a C++ function? For example, imagine a function that divides two integers and returns both the quotient and the …
Proper way to wait for one function to finish before continuing?
Feb 3, 2014 · I have two JS functions. One calls the other. Within the calling function, I'd like to call the other, wait for that function to finish, then continue on. So, for example/pseudo code: …
ERROR: function ... does not exist and HINT: No function matches …
My function is: CREATE OR REPLACE FUNCTION FnUpdateSalegtab09 ( iacyrid Integer,iRepId Integer,iDrId Integer,ivrid Integer,imode smallint,itrno varchar,itrdate timestamp,iacid …