Note: information on this page refers to Ceylon 1.2, not to the current release.
Iterable enumeration
Iterable enumeration is a notation for creating instances of
Iterable.
Usage
An example iterable enumeration using listed arguments:
{Integer|Float|String+} tuple = {1, 2.0, "three"};
Description
Syntax
Syntactically an iterable enumeration is a
positional argument list enclosed
within braces { and }.
Iterable enumerations are commonly used with
comprehensions to create a
new Iterable thats filters, combines and/or transforms some other
iterables. For example:
value evens = {for (i in 0..100) if (i % 2 == 0) i};
The empty iteratable, {}, has the value
empty and the type
Empty
Type
the type of an iterable enumeration is simply the Iterable
type of the union of the types of the elements in the expression.
See also
- Iterable and tuple enumeration in the Ceylon language specification
