f# - Does using the same instance of a builder class concurrently cause any side effects? -

i want use computation expressions inside implementation of f# class intended c# consumption. interop class singleton (one instance wired in container) , used across threads (web requests).

the builder consists of methods , has no backing fields or state.

given following customary in f#:

module =      let private build = new somebuilder() 

does mean multiple expressions associated 1 builder can evaluated concurrently no problems?

under hood, builder doesn't "work" @ all. compiler converts computation expression series of method calls on builder, , compiles that.

therefore, thread-safety of builder wholly dependent on thread-safety of methods - i.e. methods write.

for example, following code:

mybuilder {   let! x = f()   let! y = g(x)   return x + y } 

would converted following:

mybuilder.bind( f(), fun x ->    mybuilder.bind( g(x), fun y ->     mybuilder.return( x + y ) ) ) 

(note: above code may not exact, conveys gist)