mirror of
https://github.com/jbranchaud/til
synced 2026-01-03 15:18:01 +00:00
22 lines
857 B
Markdown
22 lines
857 B
Markdown
# Numbers Are Empty
|
|
|
|
The [`lodash`](https://lodash.com/) project comes with a ton of handy
|
|
JavaScript utilities including the
|
|
[`_.isEmpty()`](https://lodash.com/docs#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.
|
|
|
|
```javascript
|
|
> _.isEmpty(1)
|
|
// true
|
|
```
|