Hi,<br>What is the Haskell way to compose functions in run-time?<br>Depending on configuration parameters I need to be able to compose function in several ways without recompilation. <br>When program starts it reads configuration parameters from a text file. For example, I have three functions, f1, f2, f3,  each doing some string processing. I need to support two configurations of string processors :<br>
<br>if param1 <br>
   then sp = f1 . f2 . f3<br>
  
else sp = f1 . f3 <br>
<br>I&#39;d like to avoid &#39;if&#39; somehow and instead use some declarative way to specify code to run in external configuration file. In other words I need some easy tools to create mini DSLs without all the efforts usually involved with implementing full-blown DSL.<br>
<br>Thanks,<br>Dmitri<br><br><br>  <br clear="all"><br><br>