Bug #9901 ยป 0001-Clarify-documentation-for-Array-insert.patch
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* Inserts the given values before the element with the given +index+.
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*
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* Negative indices count backwards from the end of the array, where +-1+ is
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* the last element.
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* the last element. If a negative index is used, the given values will be
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* inserted after that element, so using an index of +-1+ will insert the
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* values at the end of the array.
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*
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* a = %w{ a b c d }
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* a.insert(2, 99) #=> ["a", "b", 99, "c", "d"]
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