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2 Functions (Method Design (Partial Application and Currying (partial…

- - - - number of variables you pass to a function
      - should be small
  - - - a function is partially applied when it is given fewer arguments than it expects and returns a new function expecting the remaining arguments
    - - a function is curried when it takes one argument at a time and returns a function expecting the next argument
  - - - jQuery’s .Deferred() returns a new object that does everything a promise does but also
        provides .resolve() and .reject() methods that trigger the corresponding callbacks.
- - - - WARNING arguments.callee is DEPRECATED
    - - function declaration
        
        cant be declared conditionally
      - fails inconsistely among browsers
    - - bar();
      - function expresion
      - conditional assignment works
      - The disadvantage is function expressions create anonymous functions unless you ex‐
        plicitly provide a name
    - - method literals
      - The baz example exhibits the same behavior. It’s another anonymous function assigned
        to a property in an object literal.
      - The advantage is that method literals make it very easy to group related functions using
        object literals.
    - - A lambda is a function that is used as data.
      - commonly used for
        
        Perform operations on the other arguments passed in
        
        Pass in a callback function to be executed when the current function is complete
        
        what is a CALLBACK function?
        
        some random guy definition:
        
        Maybe a better name would be a "call after" function.
        
        https://stackoverflow.com/questions/824234/what-is-a-callback-function
        
        this is the best example
        
        https://www.youtube.com/watch?v=xHneyv38Jro
        
        Wrap existing functions with additional functionality
        
        decorators
        
        Take a function that requires multiple parameters, and return a function that re‐
        quires fewer parameters
        
        Return a function from another function
    - - It’s possible in JavaScript to immediately invoke a function as soon as it’s defined.
        
        IIFE
    - - Functions are invoked by appending parentheses to the end of the function reference
    - - bind retorna una funcion a partir de una function previamente definida donde se realizaban operaciones a partir de un(os) this.somevalue que se bindean a un objeto
    - - Variable scope is the section of code in which the identifier refers to the expected value
    - - Default Javascript behavior of moving all the declarations to the top of the scope
    - - In a nutshell, a closure stores function state, even after the function has returned.
      - To
        create a closure, simply define a function inside another function and expose it.
      - Closures are commonly used to feed data to event handlers or callbacks, which might
        get triggered long after the containing function has finished.