Note: information on this page refers to Ceylon 1.0, not to the current release.

Reference

This page lists concepts and links to their descriptions. The complete language specification is also available.

Some of these pages are incomplete. Want to help? See how.

Structure and Declarations

• Keywords
• Modules
• Packages
• Compilation units
• Types
• Type abbreviations
• Classes
• Interfaces
• Parameters
• Type parameters
• Type aliases
• Values
• Functions
• objects
• Annotations

Annotations

• abstract
• actual
• annotation
• default
• deprecated
• doc
• by
• formal
• final
• late
• license
• native
• optional
• see
• shared
• throws
• tagged
• variable

Markdown reference for documentation annotations

Statements

• assert
• break
• continue
• Condition lists
• Expression statements
• for
• if
• import
• return
• Specification statements
• switch
• throw
• try
• while

Statement blocks

Expressions

Expressions

• Invocation
• Tuple enumeration
• Iterable enumeration
• String templates
• this
• outer
• super
• package qualifier
• Anonymous functions
• Callable references
• Static references
• Meta references

Also see operators and literals below

Operators

• ! (not)
• != (not equal)
• % (remainder)
• %= (remainder assign)
• & (Set intersection)
• && (and)
• &&= (and assign)
• &= (Set intersect assign)
• () (invoke)
• * (product)
• ** (scale)
• *= (multiply assign)
• + (sum)
• + (unary plus)
• ++ (increment)
• += (add assign)
• - (difference)
• - (unary minus)
• -- (decrement)
• -= (subtract assign)
• -> (entry)
• . (member)
• .. (spanned range)
• : (segmented range)
• / (quotient)
• /= (divide assign)
• < (less than)
• <= (less than or equal)
• <=> (compare)
• = (assign)
• == (equal)
• === (identical)
• > (greater than)
• >= (greater than or equal)
• ?. (null-safe attribute)
• ?. (null-safe method)
• [] (lookup)
• * (spread)
• *. (spread attribute)
• *. (spread method)
• x[y..z] (span)
• x[y...] (upper span)
• x[...z] (lower span)
• x[y:n] (segment)
• ^ (power)
• | (Set union)
• |= (Set union assign)
• || (or)
• ||= (or assign)
• {} (invoke)
• ~ (Set complement)
• ~= (Set complement assign)
• else
• exists
• in
• is
• nonempty
• of
• then

Operator polymorphism

Literals

• Integer literals
• Float literals
• String literals
• Character literals

API docs for ceylon.language and the Ceylon SDK

The API documentation for

• ceylon.language
• ceylon.collection
• ceylon.dbc
• ceylon.file
• ceylon.html
• ceylon.interop.java
• ceylon.io
• ceylon.json
• ceylon.math
• ceylon.net
• ceylon.process
• ceylon.test
• ceylon.time
• ceylon.unicode

Tools

• The ceylon command, ceylon
• An index of ceylon subcommands
• The Ceylon ant tasks
• The configuration file format

Interoperability

• Calling Ceylon from Java
• Calling Java from Ceylon
• Type mapping
• The JavaScript compiler

Module repositories

• Module repositories
• modules.ceylon-lang.org aka Ceylon Herd
• The ceylon SDK