[himom]

Swift closure syntax, at least in <= 2.0, made for awkward API calls, since it wasn’t clear whether inline or after closures were used.

In Ruby,

    a.map(&:succ)

[steveklabnik]

If you have a named function, rust lets you do

    a.map(succ)

as well, since functions can be used where closures can, as long as the types work.

[jeffmcmahan]

Same in JS