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Extract

Extract(expr, list)

extracts parts of expr specified by list.

Extract(expr, {list1, list2, ...})'

extracts a list of parts.

Examples

Extract(expr, i, j, ...) is equivalent to Part(expr, {i, j, ...}).

>> Extract(a + b + c, {2})
b
 
>> Extract({{a, b}, {c, d}}, {{1}, {2, 2}})
{{a,b},d}

Implementation status

  • ✅ - full supported

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