Function selectChan

wait for a case to complete

Remarks

Return a ready case, return undefined when no case is ready

Example

const c0 = a.readCase()
const c1= b.writeCase()
const c2 = c.readCase()
switch (await selectChan(c0, c1,c2)) {
    case c0:
        break
    case c1:
        break
    case c2:
        break
}

Example

default

const c0 = c.readCase()
switch (selectChan(0, c0)) {
    case c0:
        break
    case 0:
        break
}

wait for a case to complete

Remarks

Return a ready case, if no case is ready, return Promise to wait for the first ready case

returns an Promise that waits forever