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Update README.md

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`@@ -24,3 +24,25 @@ For the inputs of (2, 2): 2 + 2 = 4, and it required a call to fn().`
`24`	`24`	`For the inputs of (2, 2): 2 + 2 = 4, but those inputs were seen before so no call to fn() was required.`
`25`	`25`	`For the inputs of (1, 2): 1 + 2 = 3, and it required another call to fn() for a total of 2.`
`26`	`26`	```
	`27`	`+`
	`28`	`+## Example 2:`
	`29`	+```javascript
	`30`	`+Input:`
	`31`	`+getInputs = () => [[{},{}],[{},{}],[{},{}]]`
	`32`	`+fn = function (a, b) { return ({...a, ...b}); }`
	`33`	`+Output: [{"val":{},"calls":1},{"val":{},"calls":2},{"val":{},"calls":3}]`
	`34`	`+Explanation:`
	`35`	`+Merging two empty objects will always result in an empty object. It may seem like there should only be 1 call to fn() because of cache-hits, however none of those objects are === to each other.`
	`36`	+```
	`37`	`+`
	`38`	`+`
	`39`	`+## Example 3:`
	`40`	+```javascript
	`41`	`+Input:`
	`42`	`+getInputs = () => { const o = {}; return [[o,o],[o,o],[o,o]]; }`
	`43`	`+fn = function (a, b) { return ({...a, ...b}); }`
	`44`	`+Output: [{"val":{},"calls":1},{"val":{},"calls":1},{"val":{},"calls":1}]`
	`45`	`+Explanation:`
	`46`	`+Merging two empty objects will always result in an empty object. The 2nd and 3rd third function calls result in a cache-hit. This is because every object passed in is identical.`
	`47`	+```
	`48`	`+`

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