Questions tagged [proc-object]
47 questions
0
votes
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ArgumentError calling a Proc
s = Proc.new {|x|x*2}
puts s.call(5)
-> 10
def foo(&a)
a.call(5)
end
puts "test foo:"
foo(s)
When I try to call the proc above, I get:
foo: wrong number of arguments (1 for 0) (ArgumentError)
My expectation was that I can pass a proc to a…
uzo
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Why does this code produce a nil following a Proc.call?
C:\>irb
irb(main):001:0> s = Proc.new { puts "Hello" }
=> #
irb(main):002:0> s.call
Hello
=> nil
What causes the nil?
ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32]
uzo
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