Bug #4847 ยป hash.doc.patch
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/*
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* call-seq:
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* hsh.reject {| key, value | block } -> a_hash
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* hsh.reject -> an_enumerator
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*
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* Same as <code>Hash#delete_if</code>, but works on (and returns) a
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* copy of the <i>hsh</i>. Equivalent to
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