diff options
Diffstat (limited to 'typescript.html.markdown')
| -rw-r--r-- | typescript.html.markdown | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/typescript.html.markdown b/typescript.html.markdown index f7a41ce1..3fe707a0 100644 --- a/typescript.html.markdown +++ b/typescript.html.markdown @@ -48,6 +48,7 @@ let list: Array<number> = [1, 2, 3]; // For enumerations: enum Color { Red, Green, Blue }; let c: Color = Color.Green; +console.log(Color[c]); // "Green" // Lastly, "void" is used in the special case of a function returning nothing function bigHorribleAlert(): void { @@ -237,6 +238,16 @@ if (state.type === "success") { console.error(state.message); } +// Template Literal Types +// Use to create complex string types +type OrderSize = "regular" | "large"; +type OrderItem = "Espresso" | "Cappuccino"; +type Order = `A ${OrderSize} ${OrderItem}`; + +let order1: Order = "A regular Cappuccino"; +let order2: Order = "A large Espresso"; +let order3: Order = "A small Espresso"; // Error + // Iterators and Generators // for..of statement @@ -280,7 +291,5 @@ foo.baz = 'hello world' ## Further Reading * [TypeScript Official website] (http://www.typescriptlang.org/) - * [TypeScript language specifications] (https://github.com/Microsoft/TypeScript/blob/master/doc/spec.md) - * [Anders Hejlsberg - Introducing TypeScript on Channel 9] (http://channel9.msdn.com/posts/Anders-Hejlsberg-Introducing-TypeScript) + * [TypeScript language specifications] (https://github.com/microsoft/TypeScript/blob/main/doc/spec-ARCHIVED.md) * [Source Code on GitHub] (https://github.com/Microsoft/TypeScript) - * [Definitely Typed - repository for type definitions] (http://definitelytyped.org/) |