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Evaluate lazily android specific global values
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,8 @@ | ||
declare module "utils/lazy" { | ||
/** | ||
* A function that evaluates the action only once. | ||
* @param action The action to be evaluated to get the result. | ||
* Returns the evaluated result. | ||
*/ | ||
export default function lazy<T>(action: () => T): () => T; | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,6 @@ | ||
export default function lazy<T>(action: () => T): () => T { | ||
return (() => { | ||
let _value: T; | ||
return () => _value || (_value = action()); | ||
})(); | ||
} |