AM
Matthew Good
and also why does Byte + Byte give Int instead of Byte
Because JVM.
Size: a a a
2019 October 04
AM
There are no byte operations in JVM bytecode, everything is extended to int under the hood.
AM
Long is another story, of course, that's why it got own handling.
MG
why not just cast back to Byte?
MG
such that (Byte + Byte).toByte()
D
Matthew Good
basically if Byte + Byte gives Int, why doesnt Long + Long give anything higher than Long
If you don't care about performance too much - try using
BigInteger/BigDecimal.BigInteger - N years on not-giving-a-fuck-about-overfloating market.AM
Matthew Good
why not just cast back to Byte?
I guess that's because shorts and bytes are quite infrequent in JVM world, so these trimmings won't get you much of a profit.
I
Because JVM.
In JVM you will still get byte as a result in the sake of type consistency
MG
I guess that's because shorts and bytes are quite infrequent in JVM world, so these trimmings won't get you much of a profit.
ok
I
I came to the Kotlin chat with the exact same problem a while ago. This is just the way Kotlin does its math
AM
In JVM you will still get byte as a result in the sake of type consistency
Really? That's nice to know. Then I don't know the answer to Matthew question.
D
And on JVM level Byte/Short is still stored as Integer.
I
And on JVM level Byte/Short is still stored as Integer.
Stored -- depends. Processed -- yes
MG
also if the result of a Byte operation will cause overflow (eg Byte.MAX + Byte.MAX) should it be promoted to a larger type capable of holding the result depending on the operation (eg + vs * ) (with the exeption in which the result exceeds the largest possible type, eg greater than 64 bits, eg Long.MAX + 1 cannot be promoted to a 128 bit type as no such type exists thus would be required to overflow)
I
Ребят а где можно детальнее посмотреть что такое корутина, то есть что под капотом у Job? Почему корутина light-weight thread?
M
Лекции Романа Елизарова посмотри
A
Ребят а где можно детальнее посмотреть что такое корутина, то есть что под капотом у Job? Почему корутина light-weight thread?
Доклады Ромы Елизарова поищи на Ютубе
I
Alex
Доклады Ромы Елизарова поищи на Ютубе
смотрел, но там нет таких деталей, как они все-таки внутри работают, может ещё не все перемотрел
M
У него их несколько, в каком-то одном он залезал немного под капот
A
смотрел, но там нет таких деталей, как они все-таки внутри работают, может ещё не все перемотрел
Deep dive into coroutines on jvm, Roman Elizarov