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How to assign a variable which function takes as a parameter


By : A H
Date : October 18 2020, 08:10 PM
I hope this helps you . I'm trying to do something like this, but variable is not Assign ( , Maybe you forgot to set a return on the final of the function:
code :
const insert = (str, index, pasteString) => {
    let res;
    if (index > 0) {
        res = str.substring(0, index) + pasteString + str.substring(index, str.length);
    } else {
        res = pasteString + str;
    }
    return res;
}


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If I have a function that takes a pointer variable as input, is there a way I can pass a function as parameter?


By : Chris
Date : March 29 2020, 07:55 AM
it fixes the issue Well, obviously returnOne() doesn't match for passing into void printFunction(int*) regarding the return type, it should be something like:
code :
int* returnOne() {
    static int one = 1;
    return &one;
}
int* returnOne() {
    return new int(1);
}
printFunction(&returnOne());
           // ^
int returnOne() {
    return 1;
}

How do i declare a function which takes a variable of a yet unidentified type as parameter


By : Max Gawason
Date : March 29 2020, 07:55 AM
Hope that helps Delphi's compiler needs to know about the type before it's used. There are two ways to accomplish that with your code.
code :
type
  TItem = class
    Name : String;
    Description : String;
    constructor Create;
  end;

  TForm1 = class(TForm)
    //other declarations
    function ItemThere(x: TItem): boolean; 
  end;
type
  TItem = class;              // forward declaration

  TForm1 = class(TForm)
    //other declarations
    function ItemThere(x: TItem): boolean; 
  end;

  TItem = class               // Now define the class itself
    Name : String;
    Description : String;
    constructor Create;
  end;

Assign Global Variable to Function Parameter


By : n1nj4ghost
Date : March 29 2020, 07:55 AM
With these it helps For example: , in your code
code :
$.getJSON('data.json', function(data) {
    obj = data;
});
console.log(obj)

Assign nested function to variable with parameter


By : Ulises Garibay
Date : March 29 2020, 07:55 AM
around this issue Using lambda is easy, but i don't know if it is exactly what you are looking for.
Example:
code :
f = lambda astring : str2bool(get_setting(astring))
>>> f('cat')
True

R nonstandard evaluation: pass the name of a variable as a parameter to a function and have the function assign a value


By : user3231626
Date : March 29 2020, 07:55 AM
will help you I am certain this is answered somewhere, but was unable to find it. Programming with dplyr also doesn't give the answer. , Use parent.frame() to assign in, well, the caller's environment.
code :
assign_x <- function(xf = 'x', value = 5){
  x <- deparse(substitute(xf))
  assign(x, value, envir = parent.frame())
}

rm(x)
assign_x(x)
x
#[1] 5

assign_x(y, pi)
y
#[1] 3.141593
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