isempty

Arguments

x

vector, matrix or list

t

a boolean

Description

isempty(x) returns true if x is an empty matrix or an empty list.

isempty() can be overloaded for custom t-lists and m-lists typeof.

Examples

a=1
isempty(a(2:$))
isempty(find(rand(1:10)==5))

See also

• [] — empty matrix. Array ranges destructor.
• emptystr — zero length string
• size — size of objects
• length — Number of characters of a string. Number of elements of an array or list.

History