The lodash project comes with a ton of handy
JavaScript utilities including the
_.isEmpty() function. This is great for
checking if Arrays, Objects, and Strings are empty. The following is how
this function is defined in the docs:
Checks if value is an empty collection or object. A value is considered empty if it's an arguments object, array, string, or jQuery-like collection with a length of 0 or has no own enumerable properties.
Having not examined this definition too closely and because I primarily
write Rails code from day to day, I conflated _.isEmpty() with the
#blank? method provided by Rails' ActiveSupport. This holds true for the
most part, but quickly defies expectations when it comes to numbers.
> _.isEmpty(1)
// true