The value that is returned from a call to a function is the value of that function call. For example, with that function we can set a variable to the value that is returned using the following code (which would set result to 5). var result = num(3,3); The difference between functions and other variables is that the function has to be run in order to determine its value.
Slag glass, also known as marble glass or malachite, is a type of opaque, streaked pressed glass.ne of the first glass foundries to produce slag glass (although it was not called that at the time) was the Gateshead, England, firm of Sowerby, which patented its recipe for purple malachite glass in 1878.
It can be streaked with different colors. There were many types made from about 1880. Caramel slag is the incorrect name for chocolate glass. Pink slag was an American product made by Harry Bastow and Thomas E.A. Dugan at Indiana, Pennsylvania, about 1900. Purple and blue slag were made in American and English factories in the 1880s. Red slag is a very late Victorian and twentieth-century glass.