Does "All the data still" mean, that the fields are not re-ordered? A lot of the solutions change the order of the fields.
Currently, Matlab has the function renameStructField.
When I run the test suite on my computer, this solution works. It passes the test suite.
This fails, if the fieldname to be replaced appears as part of another fieldname. Example: S.ab=1; S.a=2; renamefield(S, 'a', 'c')
Better bullseye matrix
Return the first and last character of a string
Implement simple rotation cypher
Number of Horns on a unicorn!
Tic Tac Toe FTW
Remove the polynomials that have positive real elements of their roots.
Times 2 - START HERE
Finding Perfect Squares
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