Rubymine flags the variable found as potentially undefined. I thought the answer would be to move the variable found outside the begin but I then go into a tight loop that never exits. I am sure this is a block scoping issue but lack the ruby experience to realise what the issue is. I am assuming that this is being flagged because found is declared inside the begin, so the question here is.. is this valid code or is Rubymine's inspector wrong in this instance ?
begin
found = false
@some_collection.keys.each do |key|
found = evaluate_collection(@some_collection[key], key) unless found
end
end while found
According to the rubyspec for while:
it "executes code in containing variable scope" do
i = 0
while i != 1
a = 123
i = 1
end
a.should == 123
end
As begin...end while bool is just another form of a while statement, it also executes in the containing variable scope:
begin
found = 'asdf'
end while false
puts found
Will output asdf