undefined | Better HN

0 pointsrbobby10y ago0 comments

> basic null check

What's funny to me is that leftpad(null, 6, ' ') outputs " null".

0 comments

Am I right that len(" null") here is 5, so it's working incorreclly?

I think the joke here is that javascript has a long history of thinking that this:

    null

is the same as this:

    "null"

...Which it isn't.

rbobbyOP10y ago

Thought it was a typo on my part... but HN seems to be trimming running spaces.

talideon10y ago

HN isn't: your browser is. Runs of whitespace are collapsed in HTML to single spaces unless specifically styled otherwise. You can verify that they're there by viewing the page source.

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