mrwonko

in Visual Studio Code with https://play.nim-lang.org/?gist=e609c6c728d4cbf8751f0cf618d4df0e I got these errors:

type mismatch: got <int64> but expected 'bool'

type mismatch: got <Flags, set[range 0..65535(int)]>

but expected one of:
proc `==`(x, y: int32): bool
first type mismatch at position: 1
required type: int32

mrwonko

type
    Boolable = concept x
        if x: discard
    Bool = concept x
        x is bool

when isMainModule:
    type MyInt = distinct int
    converter toBool(x: MyInt): bool = int(x) != 0
    doAssert(MyInt is Boolable)

mrwonko

import asynchttpserver, asyncdispatch
from strformat import `&`

let name = "Willi"

proc serveIndex(req: Request) {.async.} =
    await req.respond(Http200, &"hello {name}")

let server = newAsyncHttpServer()
discard server.serve(Port(8080), serveIndex, address = "127.0.0.1")

mrwonko

import asynchttpserver, asyncdispatch
from strformat import `&`

proc main() =
    let local = "123"

    proc serveIndex(req: Request) {.async, gcsafe.} =
        await req.respond(Http200, &"{local}")

    proc serve404(req: Request) {.async, gcsafe.} =