WIP: added withMeta parameter to nlapply

[dokato]

Details in #500

[codecov[bot]]

Codecov Report

Merging #501 (55c92be) into master (49d578d) will increase coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #501      +/-   ##
==========================================
+ Coverage   75.73%   75.75%   +0.01%     
==========================================
  Files          48       48              
  Lines        5906     5910       +4     
==========================================
+ Hits         4473     4477       +4     
  Misses       1433     1433              

Impacted Files	Coverage Δ
R/neuronlistfh.R	48.94% <ø> (ø)
R/neuronlist.R	81.52% <100.00%> (+0.21%)	:arrow_up:

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[dokato]

Thanks @jefferis , maybe it requires more thinking on design indeed. The idea was to have access within the nlapply loop to the attributes of the neuron. So for example if I have a neuronlist nl with data.frame containing soma location or NULL, I can nlapply over nl and perform separate actions for each cases.

I know it's possible with subset, but then you need to stitch neuronlists together, which messes the order etc. I found out a couple of times that it'd be handy.