And just so you're getting a clearer picture:
typedef vec = (a:int, b:int, c:int);
fun + (x:vec, y:vec)=>(a=x.a + y.a, b=x.b + y.b, c=x.c + y.c);
var x = (a=1,b=2,c=3);
var y = x + x + x + x;
println$ (y.a, y.b, y.c);
generates this:
PTF y = _art57793(_art57793(_art57793(PTF x.a + PTF x.a , PTF x.b + PTF
x.b , PTF x.c + PTF x.c ).a + PTF x.a , _art57793(PTF x.a + PTF x.a , PTF x.b +
PTF x.b , PTF x.c + PTF x.c ).b + PTF x.b , _art57793(PTF x.a + PTF x.a , PTF
x.b + PTF x.b , PTF x.c + PTF x.c ).c + PTF x.c ).a + PTF x.a ,
_art57793(_art57793(PTF x.a + PTF x.a , PTF x.b + PTF x.b , PTF x.c + PTF x.c
).a + PTF x.a , _art57793(PTF x.a + PTF x.a , PTF x.b + PTF x.b , PTF x.c + PTF
x.c ).b + PTF x.b , _art57793(PTF x.a + PTF x.a , PTF x.b + PTF x.b , PTF x.c +
PTF x.c ).c + PTF x.c ).b + PTF x.b , _art57793(_art57793(PTF x.a + PTF x.a ,
PTF x.b + PTF x.b , PTF x.c + PTF x.c ).a + PTF x.a , _art57793(PTF x.a + PTF
x.a , PTF x.b + PTF x.b , PTF x.c + PTF x.c ).b + PTF x.b , _art57793(PTF x.a +
PTF x.a , PTF x.b + PTF x.b , PTF x.c + PTF x.c ).c + PTF x.c ).c + PTF x.c );
//assign
But now look what happens if we do this:
fun + (var x:vec, var y:vec)=>(a=x.a + y.a, b=x.b + y.b, c=x.c + y.c);
notice: VAR arguments there!!
Now we get this:
_i45078_v45078_x = PTF x; //init
_i45079_v45079_y = PTF x; //init
_i45084_v45084_x = _art57739(_i45078_v45078_x.a + _i45079_v45079_y.a ,
_i45078_v45078_x.b + _i45079_v45079_y.b , _i45078_v45078_x.c +
_i45079_v45079_y.c ); //init
_i45085_v45085_y = PTF x; //init
_i45093_v45093_x = _art57739(_i45084_v45084_x.a + _i45085_v45085_y.a ,
_i45084_v45084_x.b + _i45085_v45085_y.b , _i45084_v45084_x.c +
_i45085_v45085_y.c ); //init
_i45094_v45094_y = PTF x; //init
PTF y = _art57739(_i45093_v45093_x.a + _i45094_v45094_y.a ,
_i45093_v45093_x.b + _i45094_v45094_y.b , _i45093_v45093_x.c +
_i45094_v45094_y.c ); //assign
Note that I think I can fix the compiler so record slicing works the same as
array
slicing. Actually consider also tuple slicing (the array variant is much the
same).
--
john skaller
[email protected]
http://felix-lang.org
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