Method PromiseAll

java/lib/src/main/java/io/github/ccxt/Helpers.java:588–608

(Object promisesObj)

    public static CompletableFuture<List<Object>> promiseAll(Object promisesObj) { return PromiseAll(promisesObj); }

    public static CompletableFuture<List<Object>> PromiseAll(Object promisesObj) {
        List<?> promises = (List<?>) promisesObj;
        List<CompletableFuture<Object>> futures = new ArrayList<>();
        for (Object p : promises) {
            if (p instanceof CompletableFuture) {
                futures.add((CompletableFuture<Object>) p);
            }
        }
        return CompletableFuture.allOf(futures.toArray(new CompletableFuture[0]))
                .thenApply(v -> {
                    List<Object> out = new ArrayList<>(futures.size());
                    for (CompletableFuture<Object> f : futures) {
                        try {
                            out.add(f.get());
                        } catch (InterruptedException | ExecutionException e) {
                            throw new RuntimeException(e);
                        }
                    }
                    return out;
                });
    }

    public static Object toStringOrNull(Object value) {
        if (value == null) return null;