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+### mapObject
+
+Maps the values of an array to an object using a function, where the key-value pairs consist of the original value as the key and the mapped value.
+
+Use an anonymous inner function scope to declare an undefined memory space, using closures to store a return value. Use a new `Array` to stor the array with a map of the function over its data set and a comma operator to return a second step, without needing to move from one context to another (due to closures and order of operations).
+
+```js
+const mapObject = (arr, fn) => 
+  (a => (a = [arr, arr.map(fn)], a[0].reduce( (acc,val,ind) => (acc[val] = a[1][ind], acc), {}) )) ( );
+/*
+const squareIt = arr => mapObject(arr, a => a*a)
+squareIt([1,2,3]) // { 1: 1, 2: 4, 3: 9 }
+*/
+```