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Macaulay2Doc :: VisibleList _ ZZ

VisibleList _ ZZ -- get element from list

Synopsis

Description

The entries of the list, sequence or array are numbered starting with 0. If i is negative, then the i-th entry counting from the end is provided. If i is out of range, an error is signaled.

i1 : x = a..t

o1 = (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t)

o1 : Sequence
i2 : #x

o2 = 20
i3 : x_-1, x_19, x_0

o3 = (t, t, a)

o3 : Sequence

Caveat

Lists are immutable objects, i.e. you cannot assign to them. See MutableList for lists that you may modify.

See also