linux下的splice函数,perl的splice函数

Removes the

elements designated by OFFSET and LENGTH from an array, and

replaces them with the elements of LIST, if any. In list context,

returns the elements removed from the array. In scalar context,

returns the last element removed, or if no elements are

removed. The array grows or shrinks as necessary. If OFFSET is

negative then it starts that far from the end of the array. If

LENGTH is omitted, removes everything from OFFSET onward. If LENGTH

is negative, removes the elements from OFFSET onward except for

-LENGTH elements at the end of the array. If both OFFSET and LENGTH

are omitted, removes everything. If OFFSET is past the end of the

array, Perl issues a warning, and splices at the end of the

array.