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The Famous Code Module!

Lars Fiedler

While we strive to make our modules as generic as possible, it’s impossible to know all the functionality someone is going to need.  The beauty of the system is that you can create a first class module, register it, and then proceed on with creating your app.

However, there are times when I’m in a pinch to get some app done, and I don’t feel like creating a first class module for some silly parsing that needs to happen.  I also don’t want to clog up the palette with domain specific or extremely data specific modules.   Meet the code module!

The code module lets you write any c# or vb# code you want (well, there are some caveats).   The module has several inputs including:
the code (duh!),
class name in the code,
name of the method you want to call,
input parameters to the method.

The input parameters are a list, and are mapped to each parameter in your method signature.  So if you have 3 parameters, you should have 3 connections going into the parameters input.  The module also supports the “params” keyword in your method, allowing you to code for a dynamic number of inputs.

Any code is sand-boxed in an isolated application domain.  So you can’t do things like try and list directories, write to files, or anything else naughty!

This a very simple code module.  It takes in 2 inputs, and returns a string.  The return value of the method is the result of the module.  If the method returns ‘void’, then the result is set to null.

Here’s the code for example module:


Lars Fiedler

Lars has comprehensive expertise building large complex software systems, and has served as a Software Engineer at MIT’s Lincoln Laboratory since 2010, where he began developing Composable Analytics. Prior to joining Lincoln Laboratory, Lars worked as a Software Engineer at Microsoft Corporation from 2006 to 2010. Lars received his MS in Computer Science from Georgia Institute of Technology in 2004, and his BS in Computer Science from Georgia Tech in 2003.

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