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pub fn madd_r1<'a,'b,'c,'p,A,B,C,P>(a:&'a A,b:&'b B,c:&'c C)->A where | |
&'b B:Mul<&'c C,Output=P>, | |
&'a A:Add<&'p P,Output=A>, | |
P:'static, | |
{ | |
let p=b*c; | |
a + &p | |
} | |
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pub fn lerp_r1<'a,'b,'f,'d,'p,F,T,D,P>((a,b):(&'a T,&'b T), f:&'f F)->T where | |
&'b T:Sub<&'a T,Output=D>, | |
&'f F:Mul<&'d D,Output=P>, | |
&'a T:Add<&'p P, Output=T>, | |
D:'d, | |
P:'p | |
{ | |
a + &(f * &(b-a)) | |
} |
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struct Vec3<T>{x:T,y:T,z:T} | |
impl<'a, A,B> From<Vec3<B>> for Vec3<A> where A:From<B>+Copy,B:Copy { | |
fn from(b:Vec3<B>)->Self { | |
Vec3::<A>{ x: b.x.into(), y: b.y.into(), z: b.z.into() } | |
} | |
} | |
error[E0119]: conflicting implementations of trait `std::convert::From<r3d::vecmath::Vec3<_>>` for type `r3d::vecmath::Vec3<_>`: |
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#![feature(default_type_params)] | |
use std::iter::RandomAccessIterator; | |
trait ScatterInto<'a, T,INDEX=uint> { | |
fn scatter_into<SRC:Iterator<(INDEX,T)>> (&mut self, src:SRC); | |
fn scatter_by_indices<IDXS:Iterator<INDEX>, TS:Iterator<T>> (&mut self, indices:IDXS,values:TS) { self.scatter_into(indices.zip(values) ) } | |
} | |
trait ScatterIntoGrow<'a, T,INDEX=uint> { | |
/// Scatter values into a collection, and grow it if its not large enough |
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struct A{ | |
x:int,y:int | |
} | |
struct B{ | |
p:int,q:int | |
} | |
struct C{ | |
a:A,b:B | |
} |
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#[feature(macro_rules)]; | |
#[allow(macro_rules)]; | |
use std::{io,mem,raw,cast}; | |
// emulating C++ classes using Traits as vtables, could the safety be improved? | |
pub trait Foo { | |
fn foo(&self,i:int); | |
} | |
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#[feature(macro_rules)]; | |
use std::{cast}; | |
// emulating C++ classes using Traits as vtables, could the safety be improved? | |
pub trait Foo { | |
fn foo(&self,i:int); | |
} | |
pub struct CppClass<RawDataStruct,TraitInterface> { |
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use std::{io,mem,raw,cast}; | |
struct BlobContainingSlices<'a> { | |
data:~[u8], | |
subset1: &'a [u32], | |
subset2: &'a [u16], | |
} | |
fn slice_within_as<TO,FROM>(owner:&[FROM], start:uint, len_in_new_units:uint)->&[TO] { |
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// Developped from a use case: use of a precompiled object graph in a single allocation, | |
// internally using compact relative pointers, interfacing with a C library (openGL) | |
/// return a reference to a different type at a byte offset from the given base object reference | |
unsafe fn byte_ofs_ref<'a,X,Y,I:Int=int>(base:&'a X, ofs:I)->&'a Y { | |
&*( (base as *_ as *u8).offset( ofs.to_int().unwrap() ) as *Y) | |
} | |
/// return a raw ptr to a different type at a byte offset from the given base object reference | |
unsafe fn byte_ofs_ptr<'a,X,Y,I:Int=int>(base:&'a X, ofs:I)->*Y { |
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template<typename T, typename OFFSET=int, | |
int ALIGN_SHIFT=2> | |
class OffsetPtr | |
{ | |
OFFSET ofs; | |
public: | |
T* operator->() { | |
return (T*) (((((size_t)this)>>ALIGN_SHIFT)+ofs)<<ALIGN_SHIFT); | |
}; |