@effect-ts/system
Version:
Effect-TS is a zero dependency set of libraries to write highly productive, purely functional TypeScript at scale.
33 lines (30 loc) • 914 B
JavaScript
// ets_tracing: off
import * as CK from "../../../../Collections/Immutable/Chunk/index.mjs";
import * as CH from "../../Channel/index.mjs";
import * as C from "../core.mjs";
/**
* Takes all elements of the stream for as long as the specified predicate
* evaluates to `true`.
*/
export function takeWhile_(self, f) {
const loop = CH.readWith(chunk => {
const taken = CK.takeWhile_(chunk, f);
const more = CK.size(taken) === CK.size(chunk);
if (more) {
return CH.zipRight_(CH.write(taken), loop);
} else {
return CH.write(taken);
}
}, _ => CH.fail(_), _ => CH.succeed(_));
return new C.Stream(self.channel[">>>"](loop));
}
/**
* Takes all elements of the stream for as long as the specified predicate
* evaluates to `true`.
*
* @ets_data_first takeWhile_
*/
export function takeWhile(f) {
return self => takeWhile_(self, f);
}
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