Even without knowing R, you can probably get a rough idea for what the above Plumber API will do. The first function above defines the /echo endpoint which simply echoes back the text that it was sent. The second function generates a plot based on Edgar Anderson’s famous Iris Dataset; it includes a filter that allows the caller to subset the dataset to a particular species.
When it comes to plumbing, most people don’t know where to start. That’s why our skilled, experienced plumbers handle the hard work for you. All you have to do is describe what you hear—and we’ll take care of the rest! So when you’re trying to explain what’s happening with your plumbing, we speak your language! We’ll use what you’re telling us—along with our experience—to accurately diagnose and repair your system.
For many centuries, lead was the favoured material for water pipes, because its malleability made it practical to work into the desired shape. (Such use was so common that the word "plumbing" derives from plumbum, the Latin word for lead.) This was a source of lead-related health problems in the years before the health hazards of ingesting lead were fully understood; among these were stillbirths and high rates of infant mortality. Lead water pipes were still widely used in the early 20th century, and remain in many households. In addition, lead-tin alloy solder was commonly used to join copper pipes, but modern practice uses tin-antimony alloy solder instead, in order to eliminate lead hazards.