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  1. iife - What is the (function () { } ) () construct in JavaScript ...

    This means that in your example you are instantiating a new obiect defined by it's constructor (anonymous function expression) and it's invoked via the new operator, not by calling the …

  2. What does the exclamation mark do before the function?

    Mar 15, 2023 · (function(){})(); Lastly, ! makes the expression return a boolean based on the return value of the function. Usually, an immediately invoked function expression (IIFE) doesn’t …

  3. syntax - What does %>% function mean in R? - Stack Overflow

    Nov 25, 2014 · I have seen the use of %>% (percent greater than percent) function in some packages like dplyr and rvest. What does it mean? Is it a way to write closure blocks in R?

  4. How do function pointers in C work? - Stack Overflow

    356 Function pointers in C can be used to perform object-oriented programming in C. For example, the following lines is written in C: String s1 = newString(); s1->set(s1, "hello"); Yes, …

  5. 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() …

  6. How do I define a function with optional arguments?

    0 A Python function can take in some arguments, take this for example, def add(x,y): return x+ y # calling this will require only x and y add(,) # 5 If we want to add as many arguments as we may …

  7. 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 …

  8. Functions that return a function: what is the difference between ...

    Calling the function with () in a return statement executes the function, and returns whatever value was returned by the function. It is similar to calling var x = b();, but instead of assigning the …

  9. 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 …

  10. Static variable inside of a function in C - Stack Overflow

    A static variable (whether inside a function or not) is initialized exactly once, before any function in that translation unit executes. After that, it retains its value until modified.