[問題] Is "ensure" useless?
感覺 ensure 沒有什麼用
最常舉的例子就是處理 IO：
begin
file = open("/tmp/some_file", "w")
# Write to the file.
rescue
# Handle the exceptions.
ensure
file.close # this always happens.
end
但是這樣也行吧：
begin
file = open("/tmp/some_file", "w")
# Write to the file.
rescue
# Handle the exceptions.
end
file.close # this always happens too.
有沒有 ensure 沒有什麼用的八卦？
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