Merge pull request #75 from meetzaveri/patch-2

Create join_array_like_objects.md

snippets/check-for-boolean-primitive-values.md

@@ -0,0 +1,8 @@
+### Check for boolean primitive values
+
+Use `typeof` to check if a value is classified as a boolean primitive.
+
+```js
+const isBool = val => typeof val === 'boolean';
+// isBool(null) -> false
+```

snippets/drop-elements-in-array.md

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+### Drop elements in array
+
+Loop through the array, using `Array.shift()` to drop the first element of the array until the returned value from the function is `true`. 
+Returns the remaining elements.
+
+```js
+const dropElements = (arr,func) => {
+  while(arr.length > 0 && !func(arr[0])) arr.shift();
+  return arr;
+}
+// dropElements([1, 2, 3, 4], n => n >= 3) -> [3,4]
+```

snippets/join_array_like_objects.md

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+### Joining an array-like object
+
+The following example joins array-like object (arguments), by calling Function.prototype.call on Array.prototype.join.
+
+```
+function f(a, b, c) {
+  var s = Array.prototype.join.call(arguments);
+  console.log(s); // '1,a,true'
+}
+f(1, 'a', true);
+```