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**Works for:**
- booleans
- functions
- numbers (pass `true` as the last arg to treat zero as a value instead of falsey)
- strings
- nulls
- object
- arrays
## Usage
Works with nested object paths or a single value:
```js
var hasValue = require('{%= name %}');
hasValue({a: {b: {c: 'foo'}}} 'a.b.c');
//=> true
hasValue('a');
//=> true
hasValue('');
//=> false
hasValue(1);
//=> true
hasValue(0);
//=> false
hasValue(0, true); // pass `true` as the last arg to treat zero as a value
//=> true
hasValue({a: 'a'}});
//=> true
hasValue({}});
//=> false
hasValue(['a']);
//=> true
hasValue([]);
//=> false
hasValue(function(foo) {}); // function length/arity
//=> true
hasValue(function() {});
//=> false
hasValue(true);
hasValue(false);
//=> true
```
## isEmpty
To do the opposite and test for empty values, do:
```js
function isEmpty(o, isZero) {
return !hasValue.apply(hasValue, arguments);
}
```
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