On Tue, Sep 7, 2010 at 3:42 PM, Larry Evans <cppljevans@suddenlink.net>wrote:
On 09/07/10 10:41, David Sankel wrote:
On Sun, Sep 5, 2010 at 7:56 PM, Larry Evans <cppljevans@suddenlink.net wrote: [snip]
However, compiling my first try( the attached) gives: [snip] What am I doing wrong?
int result = app( next, 1 );
With the reference implementation, app should always be used within a lam. In this case you don't need a lam:
int result = next( 1 ).
But if you really wanted to make a nullary function (note the extra '()' at the end):
int result = lam<0>( app( next, 1 ) )();
Looking at the subsequent expression:
int result = app(lam_app,1);
Again we can apply the function directly here:
int result = lam_app(1);
Does that help?
I tried `lam_app(1)` in the following main:
[CODE "apply_apply.cpp"] int main() { auto op = lam<1>( app(next,_1_1 ) ); int op_1 = op(1); auto lam_app = lam<1>( app(op,_1_1) ); int lam_app_1 = #if 1 lam_app(1); #else 2; #endif return op_1 + lam_app_1; } [/CODE "apply_apply.cpp"]
However, this resulted in:
[COMPILE_ERRORS "apply_apply.cpp"] [/COMPILE_ERRORS "apply_apply.cpp"]
and the errors go on for about 40 more lines.
Any ideas?
Hrm, it works for me. I wonder if you're using an older version. I've added your example to the repository's main.cpp. Are you able to compile the repository's version? -David -- David Sankel Sankel Software www.sankelsoftware.com 585 617 4748 (Office)