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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
,
,
, ... 
,
,
, ... 
, ... 
] deletes parts at several positions.
Example: Delete[
a, b, c, d
, 3] .
Delete[
a, b, c, d
,
1
,
3
].
Deleting the head of a particular element in an expression is equivalent to applying FlattenAt to the expression at that point.
Example: Delete[
a,
b
, c
,
2, 0
].
Deleting the head of a whole expression makes the head be Sequence.
Example: Delete[
a, b
, 0].
See the Mathematica book: Section 1.8.6.
See also: Insert, MapAt, ReplacePart, FlattenAt, DeleteCases, StringDrop.
Further Examples
This deletes the third element from the list.
In[1]:= 
Out[1]= 
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT. SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION. | | | |
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