Lazy

class Util.Lazy()

This is used to delay the evaluation of a value.

Evaluation is completely deferred until get() is called. Evaluation happens no more than once and the obtained value is cached for later calls to get().

—

Example:

const x = Lazy.create(() => {
    console.log("evaluating (x)")
    return 5;
});
console.log("created (x)");
console.log(`(x) is ${x.get()}`);
console.log(`(x+1) is ${x.get()+1}`);

// *** Console Output ***
// created (x)
// evaluating (x)
// (x) is 5
// (x+1) is 6

—

Note: Unlike LazyObject<T>, this can have any type T.

Properties

__Lazy

Methods

get()
create()

Properties

Lazy.__Lazy

Type: PhantomMember

Methods

get

Lazy.get()

Forces the lazy value given at construction and returns it.

Return type: T

static create

Lazy.create(value)

Arguments

value (function()) – None

Creates a new lazy value, which is the result of the supplied function once the lazy value is forced.

Return type: Lazy <T>

Lazy.value()

Return type: T