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Joined 4 months ago
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Cake day: July 23rd, 2024

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  • Yeah, in Java calling first() on a stream is the same as an early return in a for-loop, where for each element all of the previous stream operations are applied first.

    So the stream operation

    cars.stream()
        .filter(c -> c.year() < 1977)
        .first()
    

    is equivalent to doing the following imperatively

    for (var car : cars) {
        if (car.year() < 1977) return car;
    }
    

    Not to mention Kotlin actually supports non-local returns in lambdas under specific circumstances, which allows for even more circumstances to be expressed with functional chaining.