[−][src]Module cmdtree::builder
Builder Pattern
To construct a Commander
a Builder
is used. It allows chaining together the common actions, whilst also construct the structure of the tree in an ergonomic manner.
The builder pattern is supported by the BuilderChain
trait, which is implemented on the Builder
struct, and also the common result type BuilderResult
.
This allows for chaining methods without needing to intersperse .unwrap()
or .expect()
calls everywhere.
Example
use cmdtree::*; let cmder = Builder::default_config("cmdtree-example") .begin_class("class1", "class1 help message") .begin_class("inner-class1", "nested class!") .add_action("name", "print class name", |_, _| println!("inner-class1", )) .end_class() .end_class() .into_commander().unwrap();
Structs
Builder | The persistent |
Enums
BuildError | Error variants when building a |
Traits
BuilderChain | The common functions across a |
Type Definitions
BuilderResult | The common result of |