blset

names_prefix is ok, as it is, the problem happens after the names_prefix fragment. the desired pattern is well visible when you iterate several pivot_wider in a row, at stage 1...

I cannot do it manually because it is already done automatically, but not consistently... moreover I don't know the values that are pulled from the row var and in what...

here is a resume without any resort to names_prefix which is not important for the consistency in short to get consistent names, there is only one requirement: **when values_from is...

Sorry for not being clear enough when values from contains more than one variable (eg hour and score), all is ok, in the names generating process for weekday in column...

For what I can guess, not being familiar with rust, the name post processing in the Explorer Rust code is not at the root of the inconsistency one can see...