Create Truth-check-objects.md

snippets/Truth-check-objects.md

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+### Truth-Check-Objects
+
+Check if the predicate (second argument) is truthy on all elements of a collection (first argument).
+
+
+ - For every object in the collection array, check the truthiness of object’s property passed in pre parameter
+ - Array#every method internally checks if the value returned from the callback is truthy.
+ - Return true if it passes for every object. Otherwise, return false.
+ - Also if the object is empty then it will return false
+ 
+ ```
+ function truthCheck(collection, pre) {
+  // Is everyone being true?
+  return collection.every(obj => obj[pre]);
+}
+
+truthCheck([{"user": "Tinky-Winky", "sex": "male"}, {"user": "Dipsy", "sex": "male"}, 
+{"user": "Laa-Laa", "sex": "female"}, {"user": "Po", "sex": "female"}], "sex"); 
+// true
+ 
+ ```