Conditional Error Splice for Heist

[scan]

The idea is to have a splice like this:

<dfIfErrors>There were errors</dfIfErrors>

<dfItErrors ref="name">There were errors for "name"</dfIfErrors>

Should be easily understood what they do.

[jaspervdj]

Available on Hackage as digestive-functors-heist-0.3.1.0. Please note that I called it dfIfChildErrors for consistency reasons.

[scan]

Many thanks!