class:: Penvir
summary:: use an environment when embedding the pattern in a stream
related:: Classes/Pkey
categories:: Streams-Patterns-Events>Patterns>Data Sharing

ClassMethods::

method::new

argument::envir
an environment with objects to embed.

argument::pattern
pattern or stream, usually a link::Classes/Pfunc::, link::Classes/Prout::.

argument::independent
if true streams can write to the environment without influencing other streams created from this pattern. if false, the streams write to a common namespace.

Examples::

code::
(
x = (a:8);
y = Penvir(
	x,
	Pfunc { ~a * 2 }
);

t = y.asStream;
)

t.next;



(
x = (a:8);
y = Penvir(
	x,
	Pfunc { ~a = ~a * 2 }
);

t = y.asStream;
z = y.asStream;
)

t.next;
t.next;
x.postln;	// x stays unchanged
::