apply

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apply

$\begin{usage} apply(p, t)\\ p~t\\ apply(port, p, x)\\ port(p, x) \end{usage}$

$\begin{signatures} apply: & (\%, \htmlref{\texttt{ExpressionTree}}{ExpressionT... ...{Symbol}) $\to$\ \htmlref{\texttt{TextWriter}}{TextWriter}\\\end{signatures}$

$\begin{params} {\em p} & \% & A polynomial or series\\ {\em t} & \htmlref{\te... ...} & \htmlref{\texttt{TextWriter}}{TextWriter} & An output port\\\end{params}$

$\begin{descr} apply(p, t) returns p as an expression tree, using t as root vari... ...ng x as root variable name, and returns the output port afterwards. \end{descr}$

Example

import from Integer, DenseUnivariatePolynomial Integer;

p := monomial(1, 3) + monomial(2, 1) - monomial(1, 0);  -- p = x^3 + 2 x - 1
stdout(map((n:Integer):Integer +-> n + n)(p), -"x");

writes


  2 x^{3} + 4 x - 2

to the standard stream stdout.

Manuel Bronstein 2000-12-13