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docs/JavaScript_Advance/currying.md

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+# Currying
+
+## What is Currying? 
+Currying is a technique of evaluating function with multiple arguments, into sequence of function with single argument.
+
+## Where we use Currying?
+When we want a function, instead of taking all arguments at one time, takes the first one and return a new function that takes the second one and returns a new function which takes the third one, and so forth, until all arguments have been fulfilled.
+
+When we want to avoid passing the same variable again and again.
+
+When we want the little pieces to be configured and reused with ease.
+
+## How we make Currying? 
+We know that currying is the process of taking a function with multiple arguments and turning it into a sequence of functions each with only a single argument.
+
+For example: 
+```js
+const notCurry = (x, y, z) => x + y + z; // a regular function
+```
+Which will be turned into : 
+```js
+const curry = x => y => z => x + y + z; // a curry function
+```