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class:: EnvironmentRedirect
summary:: base class for environment redirects
categories:: JITLib>Environments, Collections>Unordered, Live Coding
related:: Classes/Environment
description::
Environment that redirects access (strong::put::) and assignment (strong::at::). It is used as a base class for redirecting Environments. For example uses, see link::Classes/LazyEnvir:: and link::Classes/ProxySpace::.
ClassMethods::
method::new
Create new environment redirect, if envir is given, it is used as a basis.
subsection:: replacing Environment class methods
EnvironmentRedirect implements some of the interface of link::Classes/Environment::
method::push, pop, make, use
InstanceMethods::
method::envir
return or replace the source environment
code::
e = LazyEnvir.new;
e.put(\x, 9);
e.envir; // look into the envir itself: for a LazyEnvir it contains Maybe as placeholders
::
subsection::redirecting objects
Overriding these methods, one can redirect where objects go when they are assigned to the space. This is done for example in link::Classes/LazyEnvir:: and link::Classes/ProxySpace::.
method::at, put, localPut, removeAt
method::dispatch
A function or object that is called when the environment is modified. The key and the changed object are passed as arguments.
code::
e = LazyEnvir.new;
e.dispatch = { |key, val| [key, val].postln };
e.put(\x, 9);
::
method::add
add an association
subsection:: replacing Environment instance methods
EnvironmentRedirect implements some of the interface of link::Classes/Environment::, which it can replace where needed.
method:: push, pop, clear, choose
method:: make, use
method:: do, keysValuesDo, sortedKeysValuesDo
method:: keysValuesArrayDo
method:: findKeyForValue
method:: know
method:: doesNotUnderstand
section::Networking
EnvironmentRedirect and its subclasses can be used to dispatch assignment over a network. To do this, a dispatch function can be supplied - see Public in strong::JITLibExtensions:: quark.
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