Singular

D.2.8.8 fetchall

Usage:

fetchall(R[,s]); R=ring/qring, s=string

Create:

fetch all objects of ring R (of type poly/ideal/vector/module/number/matrix) into the basering.
If no 2nd argument is present, the names are the same as in R. If, say, f is a polynomial in R and the 2nd argument is the string "R", then f is mapped to f_R etc.

Return:

no return value

Note:

As fetch, this procedure maps the 1st, 2nd, ... variable of R to the 1st, 2nd, ... variable of the basering.
The 2nd argument is useful in order to avoid conflicts of names, the empty string is allowed

Caution:

fetchall does not work for locally defined names.
It does not work if R contains a map.

LIB "ring.lib";
// The example is not shown since fetchall does not work in a procedure;
// (and hence not in the example procedure). Try the following commands:
//   ring R=0,(x,y,z),dp;
//   ideal j=x,y2,z2;
//   matrix M[2][3]=1,2,3,x,y,z;
//   j; print(M);
//   ring S=0,(a,b,c),ds;
//   fetchall(R);       //map from R to S: x->a, y->b, z->c;
//   names(S);
//   j; print(M);
//   fetchall(S,"1");   //identity map of S: copy objects, change names
//   names(S);
//   kill R,S;