Convert Array of DoubleSupplier to Supplier<Double>

[babbott1000]

I’ve recently begun to implement BadLog into our robot code. I have an array with elements of type DoubleSupplier that I want to log, which I wished to use a loop for, however, BadLog can only use the type Supplier<Double> in the method that attaches a supplier to log. Is there any way to convert an array with elements of type DoubleSupplier to individual suppliers of type Supplier<Double>?

[maccopacco]

Supplier<Double> supplierOfDoubleAtIndex0 = () -> doubleSupplierArray[0].getAsDouble();

[babbott1000]

This works fine as long as you have a specific index you want to use, but if you try to loop through this it will not work because the index variable is out of scope

[Oblarg]

The index variable is captured by the lambda; it works fine. If the Java compiler complains, it’s probably due to it not being able to verify that the variable is effectively final within each iteration of the loop; you can fix this by simply using a dummy variable assigned to the value of the index:

for (int i = 0; i<n; i++) {
  final int ii = i;
  // use ii as your captured variable in the rest of the loop
}