Add an index argument to check_if() #212
Description
Currently, if an exercise requires a student to define a function with 2 if blocks, you can't distinguish them.
See Writing Functions in R, Ch5, Ex13 as an example of this.
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Currently, if an exercise requires a student to define a function with 2 if blocks, you can't distinguish them.
See Writing Functions in R, Ch5, Ex13 as an example of this.