Ruby called a collection of blocks -


assume have built array of callable objects doing

callables = [] callables << block1 callables << block2 callables << block3 callables << block4

later want call these blocks. understand can do

callables.each { |block| block.call }

but wondering if make simpler calling like

callables.each :call

i have tried code above got argumenterror. ruby support kind of syntax?

you should try :

callables.each &:call

array#each don't accept arguments. that's why, when write callables.each :call, :call symbol passing method each argument. when prefixed :call &, each knows giving block argument, work.


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