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Using |
Syntax |
Using R Do C EndUsing where R is the identifier for a ring and C is a sequence of commands. |
Summary |
perform commands in non-active ring |
Description |
Suppose S is the current ring and R is another ring, then Using R Do C; EndUsing; is equivalent to Use R; C; Use S; |
Example |
Use S ::= Q[x,y]; -- the current ring is S R ::= Q[a,b,c]; -- another ring Using R Do Indets() EndUsing; [a, b, c] ------------------------------- Note: 'Using Q[a,b] Do ...' is not proper syntax and will produce an error. |
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