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lookup Operator

7th September 2017 at 2:47pm
Filter Operators
purposeapplies a prefix to each input title to yield the title of a tiddler from which the final value is retrieved
inputa selection of titles
suffixD = the default value to be used for missing lookups
parameterP = prefix applied to input titles to yield title of lookup tiddler from which value is retrieved
outputthe lookup values corresponding to each input title

New in: 5.1.15

The action of this operator is as follows:

  • Apply the specified prefix to each input tiddler title, yielding a new list of tiddler titles
  • Transclude the value of each of those tiddlers
    • Substitute the default value for missing or empty tiddlers
  • Return the list of values