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- Binding patterns
- Typed binding pattern
- Wildcard binding pattern
- List binding patterns
- Rest binding pattern in list binding pattern
- Mapping binding pattern
- Rest binding pattern in mapping binding pattern
- Error binding pattern
- Rest binding pattern in error binding pattern
- Single use of typed binding patterns
- Single use of typed binding patterns with on fail clause
- Iterative use of typed binding patterns
- List binding pattern in match statement
- Mapping binding pattern in match statement
- Error binding pattern in match statement
- Query expressions
- Sort iterable objects
- Let clause
- Limit clause
- Join iterable objects
- Outer Join clause
- Query tables
- Create tables with a query
- Create maps with a query
- Create streams with a query
- On conflict clause
- Advanced conflict handling
- Iterate over XML with a query
- Nested query expressions
- Destructure records using a query
- Querying streams
- Aggregation
- JSON type
- Access JSON elements
- Access optional JSON elements
- Match statement with maps
- Convert from user-defined type to JSON
- Convert from table and XML to JSON
- Convert from JSON to user-defined type
- Cast JSON to user-defined type
- Resource method typing
- JSON numbers
- JSON to record
- JSON to record with projection
- JSONPath expressions
- Asynchronous function calls
- Named workers
- Sequence diagrams
- Wait for workers
- Strands
- Named worker return values
- Alternate wait
- Multiple wait
- Named workers and futures
- Inter-worker message passing
- Alternate receive
- Multiple receive
- Conditional send
- Inter-worker failure propagation
- Named worker with on fail clause
- Synchronize message passing
- Asynchronize message passing
- Flush
- Fork
Documentation
Annotations would be inconvenient for specifying structured documentation. Ballerina-flavored Markdown (BFM) is an additional convention on top of Markdown, which makes it more convenient for documenting Ballerina code.
// Lines starting with `#` contain structured documentation in Markdown format.
# Adds two integers.
// Documents the parameters of the function.
# + x - an integer
# + y - another integer
// Documents the return parameter of the function.
# + return - the sum of `x` and `y`
public function add(int x, int y) returns int {
return x + y;
}
$ bal run documentation.balPreviousRegExp match operations
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