Re: Retrieve an array using non-subscript data

OK thanks a lot John.

Do you mean that creating indices like you put it (with an 'X' suffix
at the end of your globals names) is a convention when using M[umps] ?

To make sure I understood the syntax and how it works (because I'm
*very* new to M language) when you have a global 'Stuff' containing
zillions of records like:
~ set ^Stuff(1) =3D "ABC`12380`xyz"
~ set ^Stuff(2) =3D "DEF`98787`ghf"

in order to index Stuff data other than the numeric subscript used
above you have to do the following ?:
~ i :=3D how many records Stuff contains
~ for x :=3D 1 up to i loop
~   field2_value :=3D get 2nd value in array of ^Stuff(x)
~   ^StuffX(field2_value) :=3D x
~   /* or if several times the same value possible:
~   ^Stuff(field2_value,x) :=3D null */
~ end loop

Is this *really* the way to go ? Is this how it works with M[umps] ??

Thanks !
Regards,
S=E9bastien


On 3 okt, 10:12, John Murray <jo...@[EMAIL PROTECTED]
> wrote:
> Index example:
>
> Construct and maintain ^StuffX(piece2)=3Di (if there can only be a
maximum
> of one record with a given piece-2 value), or ^StuffX(piece2,i)=3D"" (if
> there can be multiple records with a given piece-2 value).
>
> Then (first case):
>
>         set i=3D$get(^StuffX(12380))
>         if i'=3D"" do ProcessStuff
>
> Or (second case):
>
>         set i=3D""
>         for  set i=3D$order(^StuffX(12380,i)) quit:i=3D""  do
> ProcessStuff(i) quit
>