Add whereLabel* functions #143
Merged
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This PR adds a few functions from the
whereLabel*
family:whereLabelExists
whereLabelDoesNotExist
whereLabelValueMatches
This should help with situations like those mentioned in #82 (comment)
Right now, these functions are strictly for
[]*RuntimeContainer
, but they could be adjusted to work in other situations if need be. I could also see adding ahasLabel
function that takes*RuntimeContainer
or exposing theregexp.MatchString
function used bywhereLabelValueMatches
, but I wanted to keep this PR simple and focused.