On Aug 24, 2011, at 8:38 PM, Andrew Pennebaker wrote: > $ ./example.factor > Loading /Users/andrew/.factor-rc > The word for-all cannot be executed because it failed to compile > > Cannot apply “input<sequence” to an input parameter of a non-inline word > macro input<sequence
input<sequence is also a macro; it's essentially "firstn" with the "n"
determined by stack effect inference on the input quotation. Since it's a
macro, that input quotation needs to be statically determinable by the
compiler. The compiler isn't smart enough to reach up to the caller's frame
without the "inline" annotation on the callee:
: foo ( quot -- x ) input<sequence ; inline ! *must* be inline
: bar ( -- six ) { 1 2 3 } [ + + ] foo ;
The stack is ultimately not a dynamic thing in Factor, and while there are
hacks to pretend it is, you'll be happier if you find a more
data-structure-oriented approach. You said you had an array of quotations; a
better approach would be to iterate over the array, call each quotation with
call( -- ) and process the outputs in a single pass, something akin like this:
: generate-and-print ( generators -- )
[ call( -- x ) . ] each ;
-Joe
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