Note: information on this page refers to Ceylon 1.2, not to the current release.

x[y:n] (measure) operator

The measure operator returns the subrange of its left-hand operand starting from its central operand and including as many elements as given by its right-hand operand.

Usage

String[] names = {"foo", "bar", "baz"};
String[] foo = names[0:1];
String[] barBaz = names[1:2];
String[] empty = names[1:0];

Description

Definition

The lhs[from:length] operator is defined as follows:

lhs.measure(from,length)

See the language specification for more details.

Polymorphism

The x[y:n] operator is polymorphic. The meaning of x[y:n] depends on the Ranged interface.

Type

The result type of the lhs[from:length] operator is the element type of the Ranged lhs.

See also

• x[y..z] (span) operator used for obtaining a subrange from a Ranged.
• API documentation for Ranged
• sequence operators in the language specification
• operator precedence in the language specification
• Operator polymorphism in the Tour of Ceylon