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Mathematica > Core Language > Expressions > Parts of Expressions >

Delete

Delete[expr, n]
deletes the element at position n in expr. If n is negative, the position is counted from the end.

Delete[expr, {i, j, ...}]
deletes the part at position {i, j, ...}.

Delete[expr, {{i₁, j₁, ...}, {i₂, j₂, ...}, ...}]
deletes parts at several positions.

Deleting the head of a particular element in an expression is equivalent to applying FlattenAt to the expression at that point. »

Delete the element at position 3:

Delete at position 2 from the end:

Delete at positions 1 and 3:

Delete in a 2D array:

Delete the element at position 3:

Delete at position 2 from the end:

Delete at positions 1 and 3:

Delete in a 2D array:

Delete in an expression with any head:

Delete at any position in any expression:

Delete a head to splice in its arguments:

Deleting the head of a whole expression gives a Sequence object: