Lambda functions not executing from a rule and null reported in log

[rossko57]

Oh …

@slefevre

val lambda2 = [ GenericItem sensorX, GenericItem switchX |

from memory, you need to give the return type(?) too e.g. “three entries” for a two parameter lambda. Look into that.

EDIT it’s more complicated than that. See here for description of “auto procedure or function” action

Reusable Functions: A simple lambda example with copious notes

Major Edit: Rewrote with the cleaner OH 2.3 syntax. The example lambda on the OH 1 wiki is overly complex and as written will not work in OH 2. This quick example will show a super simple lambda example with copious notes. Here is the code without comments. It takes in an Item, logs it’s state and returns a slightly modified version of the String logged. val log= [ GenericItem s | logInfo("lambda", s.state.toString) s.state.toString + " logged" ] rule "Call Lambda" when // some t…