Is there an attribute syntax/philosophy?

[OlaFosheimGrostad]

I think most langauges fail to provide compilation hints and optimization constraints/directives in a clear an non-intrusive manner.

In particular, it is a bad idea to provide such hints as prefixes, they ought to come after as an "after-thought" since they reduce code legibility. Also the syntax should be clear, but not as "screaming" as in C++.

Maybe something like this?

     let x = something(a,b,c,d)  @ must-inline, do-this-or-that;
     …   @ tail-call-optimize;