Pipe a possibly unresolved value forward into a function.
x %>>% f
a value that is possibly an 'unresolvedValue'.
a function that accepts 'x' as its first argument.
The evaluated result, or if x is an 'unresolvedValue', an 'unresolvedExpr'.
An 'unresolvedExpr' encapsulates the eventual evaluation result.
$data element for resolution. Once resolved, the object
changes into a 'resolvedExpr' and the evaluated result will be available
Supports stringing together a series of piped expressions (as per the below example).
unresolved may be used on an 'unresolvedExpr' or its
$data element to test for resolution.
Usage is similar to R's native
x %>>% f is equivalent to
x %>>% f() is equivalent to
x %>>% f(y) is equivalent to
Please note that other usage is not supported and it is not a drop-in
replacement for magrittr's