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ruby gem require

ruby gem require

I am confused, can somebody please explain to me the difference between these two calls? I tried some variations below, and the only one that worked was the obsolete require_gem call. user@vm0_gentoo /my/path $ irb -r rubygems irb(main):001:0> require

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Ruby是一種為了物件導向而創的簡單快捷的腳本語。它擁有簡單易懂，方便好學的特性，能減少程式設計時候的不必要的瑣碎時間。Ruby語言通常非常直觀，會按照設計者希望的運行方式來執行。 擁有簡單易懂，方便好學的特性。 ...

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