### 5.1.144 size

`Syntax:`
  `size (` string_expression `)`
  `size (` bigint_expression `)`
  `size (` number_expression `)`
  `size (` intvec_expression `)`
  `size (` bigintvec_expression `)`
  `size (` intmat_expression `)`
  `size (` poly_expression `)`
  `size (` vector_expression `)`
  `size (` ideal_expression `)`
  `size (` module_expression `)`
  `size (` matrix_expression `)`
  `size (` bigintmat_expression `)`
  `size (` list_expression `)`
  `size (` resolution_expression `)`
  `size (` ring_expression `)`
`Type:`
  int
`Purpose:`
  depends on the type of argument:
  ideal or module
    returns the number of (non-zero) generators.
  string, intvec, bigintvec, list or resolution
    returns the length, i.e., the number of characters, entries or elements.
  poly or vector
    returns the number of monomials.
  matrix, bigintmat or intmat
    returns the number of entries (rows*columns).
  ring
    returns the number of elements in the ground field (for Z/p and algebraic extensions) or -1
  number or bigint
    returns 0 for 0 or the number of words
`Example:`

        string s="hello";
        size(s);
      ==> 5
        intvec iv=1,2;
        size(iv);
      ==> 2
        ring r=0,(x,y,z),lp;
        poly f=x+y+z;
        size(f);
      ==> 3
        vector v=[x+y,0,0,1];
        size(v);
      ==> 3
        ideal i=f,y;
        size(i);
      ==> 2
        module m=v,[0,1],[0,0,1],2*v;
        size(m);
      ==> 4
        matrix mm[2][2];
        size(mm);
      ==> 4
        ring r1=(2,a),x,dp;
        minpoly=a4+a+1;
        size(r1);
      ==> 16

See ideal; intmat; intvec; module; ncols; nrows; poly; string; vector.

User manual for Singular version 4.4.1, 2025, generated by texi2html.