When to use Partially Applied Functions [closed]

Answer 1

In Java you often pass in the first (or more) arguments of a partially applied function to the constructor of a class. Rex's example might then look something like this:

class TaxProvider {
    final String state;

    TaxProvider(String state) {
        this.state = state;
    }

    double getTaxedCost(double cost) {
      return ... // look up tax for state and apply to cost
    }
}


TaxProvider locallyTaxed = new TaxProvider("NY")
double costOfApples = locallyTaxed.getTaxedCost(price("apples"))