Differences

This shows you the differences between two versions of the page.

--- at:tutorial:appendix [2021/09/24 10:25] – [Traits] elisag
+++ at:tutorial:appendix [2021/09/24 10:28] – [Dynamic Variables] elisag
@@ Line 392: / Line 392: @@
 ===== Language Extensions =====
-The files in the ''at/lang'' directory define custom language features which mostly use AmbientTalk/2's reflective facilities to extend the language.
+The files in the ''at/lang'' directory define custom language features which mostly use AmbientTalk/2's reflective facilities to extend the language. In what follows, we describe the most relevant ones.
@@ Line 532: / Line 532: @@
 Please have a look to [[:uf:totam]] for further details on the model and its API.
-==== Dynamic Variables ====
+===== Dynamic Variables =====
 The module ''/.at.lang.dynvars'' provides support for defining and using 'Dynamic Variables'. Dynamic variables 'simulate' dynamically scoped variables and are often used to parameterize large parts of code. For example, the 'current output stream'. A dynamic variable has the advantage over a simple global variable that it can only be assigned a value for the extent of a block of code.