Method proc with parameters

问题

Is possible to use method proc with parameters in Crystal ?

Something like:

def foo(baz)
  puts "#{baz} foo!"
end

proc = ->foo

proc.call "Hi"

回答1:

Yes. If the method has arguments, you must specify their types:

proc = ->foo(String)
proc.call "Hi" # Hi foo!

Find more examples at crystal docs.

来源：https://stackoverflow.com/questions/46728581/method-proc-with-parameters