如何在 F# 中制作 uint32？

Question

I have an .NET api, from RabbitMQ, that takes a uint32

the method is:

void BasicQos(uint prefetchSize, ushort prefetchCount, bool global);

in C#:

channel.BasicQos(0, 1, false);

but in F#, the same line gives:

[FS0001] This expression was expected to have type 'uint32' but here has type 'int'

but I can't figure out how to declare a number as unsigned in F#; how can I do this?

UInt32 and UInt32Converter exist but I couldn't see how I could use them to convert / cast, etc.

Answer 1

Check out the docs page on literals here , but the short form is that you need the u suffix: 0u is an unsigned 32-bit integral zero. You could also use the uint32 function to convert a signed 32-bit int to an unsigned 32-bit int, but this would be work done at runtime as opposed to a compile-time value.