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  • Array.of

Array.of

# Mark Volkmann (11 years ago)

What is an example of a use case where one would choose to use Array.of instead of the literal array syntax?

# Claude Pache (11 years ago)

Here is one case where literal array syntax is not possible:

class ImprovedArray extends Array { ... }

let a = ImprovedArray.of( ... )
# Rick Waldron (11 years ago)

Back when Dave Herman and I first dreamed up Array.of, I wrote this up: gist.github.com/rwaldron/1074126#arrayof--variable-arity-

# Brendan Eich (11 years ago)

Thanks for the pointer!

I like Claude's use-case and recall Allen citing it too. So, two reasons:

  1. Higher-order functional programming wants a function, not literal syntax.

  2. Subclassing Array works too, thanks to ES6's class-side inheritance.