add bit about communication

[msc-thesis1617.git] / methods.top.tex

diff --git a/methods.top.tex b/methods.top.tex
index cbf65eb..9777db5 100644 (file)
--- a/methods.top.tex
+++ b/methods.top.tex
@@ -1,19 +1,26 @@
 \section{\acrlong{TOP}}
 \subsection{\gls{iTasks}}
-\gls{TOP} is a recent new programming paradigm implemented as
+\gls{TOP} is a recent programming paradigm implemented as
 \gls{iTasks}\cite{achten_introduction_2015} in the pure lazy functional
 language \gls{Clean}\cite{brus_cleanlanguage_1987}. \gls{iTasks} is a
 \gls{EDSL} to model workflow tasks in the broadest sense. A \CI{Task} is just
 a function that, given some state, returns the observable \CI{TaskValue}. The
 \CI{TaskValue} of a \CI{Task} can have different states. Not all state
 transitions are possible as shown in Figure~\ref{fig:taskvalue}. Once a value
-has gone stable it can never become unstable again. Stability is often reached
-by pressing a confirmation button or for \glspl{Task} that offer a constant
-value. A simple example is shown in Listing~\ref{lst:taskex} accompanied with
-Figure~\ref{fig:taskex1},~\ref{fig:taskex2} and~\ref{fig:taskex3}. In this
-example the first image in is the \CI{NoValue} state, the second and third
-image are in the \CI{Unstable} state. When the user presses \emph{Continue} the
-value becomes \CI{Stable}.
+is stable it can never become unstable again. Stability is often reached
+by pressing a confirmation button. \glspl{Task} yielding a constant value are
+immediately stable.
+
+A simple \gls{iTasks} example illustrating the route to stability of a
+\gls{Task} in which the user has to enter a full name is shown in
+Listing~\ref{lst:taskex}. The code is accompanied by screenshots showing the
+user interface in Figure~\ref{fig:taskex1},~\ref{fig:taskex2}
+and~\ref{fig:taskex3}. The \CI{TaskValue} of the \gls{Task} is in the first
+image in the \CI{NoValue} state, the second image does not have all the fields
+filled in and therefore the \CI{TaskValue} remains \CI{Unstable}. In the third
+image all fields are entered and the \CI{TaskValue} transitions to the
+\CI{Unstable} state. When the user presses \emph{Continue} the value becomes
+\CI{Stable} and can not be changed any further.
 
 \begin{figure}[H]
        \centering
@@ -23,9 +30,9 @@ value becomes \CI{Stable}.
 
 \begin{lstlisting}[language=Clean,label={lst:taskex},%
        caption={An example \gls{Task} for entering a name}]
-:: Name         = { firstname :: String
-                  , lastname  :: String
-                                 }
+:: Name = { firstname :: String
+          , lastname  :: String
+          }
 
 derive class iTask Name
 
@@ -59,5 +66,5 @@ functions that are captured in the class \CI{iTask}. Basic types have
 specialization instances for these functions and show an according interface.
 Generated interfaces can be modified with decoration operators.
 
-
 \subsection{Combinators}
+\todo{Stukje over combinators, in ieder geval bind en paralel}