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4.23.3 Access to elements of a user defined type
Access to elements of a user defined type via . :
<object>.<element_name>. The <element_names> are from the definition of the type. Additional, all (potentially) ring dependent elements have an additional
entry r_ <element_name> for the corresponding ring.
Example:
| newstruct("nt","int a,poly b,string c");
nt A;
3+A.a;
==> 3
A.c="example string";
ring r;
A.b=poly(1); // assignment: expression must be of the given type
A;
==> c=example string
==> b=1
==> a=0
A.r_b;
==> // coefficients: ZZ/32003
==> // number of vars : 3
==> // block 1 : ordering dp
==> // : names x y z
==> // block 2 : ordering C
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