Lazy

class wv.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.

Index

Properties

• __Lazy

Methods

• create
• get

Properties

wv.Util.Lazy.__Lazy

readonly

__Lazy: PhantomMember

Methods

static wv.Util.Lazy.create()

static

create(value: () => T): Lazy<T>

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

Parameters

value: () => T

Returns: Lazy<T>

wv.Util.Lazy.get()

get(): T

Forces the lazy value given at construction and returns it.

Returns: T