The start of the range.
Optionalend: numberThe end of the range.
Optionalstep: numberThe step to increment the range by.
Returns a generator that yields values from a given callback passing the numbers in the range from start to end (inclusive).
The start of the range.
The end of the range.
The callback to map the values in the range.
Returns a generator that yields values from a given callback passing the numbers in the range from start to end (inclusive).
The start of the range.
The end of the range.
The callback to map the values in the range.
The step to increment the range by.
Returns a generator that yields numbers from
starttoend(inclusive) bystepsteps.