generator

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generator

$\begin{usage} for term in p repeat \{ (c, n) := term; \dots \}\\ for term in generator~p repeat \{ (c, n) := term; \dots \}\end{usage}$

Signature

generator: % $\to$ Generator Cross(R, Integer)

$\begin{params} {\em p} & \% & A product\\ \end{params}$

$\begin{descr} This function allows a product to be iterated independently of it... ...r yields pairs of the form $(a, n)$\ where $a^n$\ is a term in $p$. \end{descr}$

Example

import from Integer, Product Integer;

p := term(3, 1) * term(2, 11) * term(5, 2)       -- p = 3^1 2^11 5^2
for term in p repeat { (c, n) := term; stdout << c << "," << n << newline; }

writes

to the standard stream stdout.

Manuel Bronstein 2000-12-13