Re: setjmp / longjmp
On 27/04/2015 10:41, ketmar wrote: i believe this has something to do with exception frames. but it needs further investigation. What is an exception frame, exactly? Moreover, are these frames applicable even in sections of code where no throwing or catching of exceptions takes place? Stewart. -- My email address is valid but not my primary mailbox and not checked regularly. Please keep replies on the 'group where everybody may benefit.
Re: setjmp / longjmp
On 26/04/2015 06:56, ketmar wrote: you shouldn't use setjmp/longjmp in D. use exceptions instead. something like this: True in the general case. Still, there must be some reason that trying it in D causes an AV (even if I disable the GC). I remain curious about what that reason is. Some time ago, just for fun, I wrote an Unlambda to D compiler. Except that I couldn't get the c builtin to work properly. Exceptions cover typical uses cases, but a subtlety of it is that (roughly speaking) the continuation it emits can escape from the function it is passed into, and then when the continuation is later invoked it should return the program to the point at which c was invoked. Essentially, it can wind the stack as well as unwinding it. I envisaged that, maybe with the aid of setjmp and some trick to get GC to work with it, it could be made to work. Stewart. -- My email address is valid but not my primary mailbox and not checked regularly. Please keep replies on the 'group where everybody may benefit.
Re: multidimensional array
On 28/09/2014 08:48, ketmar via Digitalmars-d-learn wrote:
On Sun, 28 Sep 2014 04:24:19 +
Joel via Digitalmars-d-learn wrote:
struct Spot { bool dot; }
spots = new Spot[][](800,600);
btw, does anybody know why i can do `new ubyte[256];` but not
`new ubyte[256][256];`? hate that.
You can do `new ubyte[256][256]`, if the destination type is a ubyte[256][]. The reason
is that you are performing an allocation of the form `new T[n]`, which means allocate an
array of n instances of type T. In this case, T is ubyte[256], which is a static array type.
Stewart.
--
My email address is valid but not my primary mailbox and not checked regularly. Please
keep replies on the 'group where everybody may benefit.
