unity return value from ienumerator

return-value-ienumerator.md

basic method

void Foo()
{
    StartCoroutine(Bar((bool myReturnValue) => {
        if(myReturnValue) { ... }
    });
}
IEnumerator Bar(System.Action<bool> callback)
{
    yield return null;
    callback(true);
}

https://discussions.unity.com/t/how-do-i-return-a-value-from-a-coroutine/6438/5

with argument

void Foo()
{
    StartCoroutine(Bar("1",(bool myReturnValue) => {
        if(myReturnValue) { ... }
    });
}
IEnumerator Bar(string msg, System.Action<bool> callback)
{
    yield return null;
    callback(msg=="1");
}