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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. Passing parameters to a Bash function - Stack Overflow

    Jun 2, 2011 · I am trying to search how to pass parameters in a Bash function, but what comes up is always how to pass parameter from the command line. I would like to pass parameters …

  4. 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 …

  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. 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 …

  7. 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 …

  8. Defining and calling function in one step - Stack Overflow

    Dec 30, 2015 · Is there a way in Javascript to define a function and immediately call it, in a way that allows it to be reused? I know you can do one-off anonymous functions: (function(i) { var …

  9. 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 …

  10. JavaScript error: "is not a function" - Stack Overflow

    It was attempted to call a value like a function, but the value is not actually a function. Some code expects you to provide a function, but that didn't happen.