ExpressionFunction<R extends Object> class

A function is a piece of dart code that performs a specific task.

A function can be used anywhere in an tag expression. Wherever that particular task should be performed.

An example of a function call: cos(pi) Should result in: -1

Custom Functions

You can adopt existing functions or add your own custom functions by manipulating the TemplateEngine.functionGroups field. See custom_function_test.dart.

Implemented types

• DocumentationFactory
• ExampleFactory

Implementers

• Acos
• Asin
• Atan
• Cos
• DocumentationFunction
• Exp
• ImportJson
• ImportPure
• ImportTemplate
• ImportXml
• ImportYaml
• Log
• Round
• Sin
• Sqrt
• StringLength
• Tan
• TemplateSource

Constructors

ExpressionFunction.new({required String name, String? description, String? exampleExpression, String? exampleResult, ProjectFilePath? exampleCode, List<Parameter> parameters = const [], required Future<R> function(String position, RenderContext renderContext, Map<String, Object> parameters)})

Properties

description → String?

final

exampleCode → ProjectFilePath?

final

exampleExpression → String?

final

exampleResult → String?

final

function → Future<R> Function(String position, RenderContext renderContext, Map<String, Object> parameters)

final

hashCode → int

The hash code for this object.

no setter, inherited

name → String

final

parameters → List<Parameter>

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

createMarkdownDocumentation(RenderContext renderContext, int titleLevel) → List<String>

override

createMarkdownExamples(RenderContext renderContext, int titleLevel) → List<String>

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited