Labelling functions in Gadfly plot

Question

Plotting functions directly is easy in Gadfly:

plot([sin, cos], 0, 25)

This gives my two differently colored lines, automatically labelled in the legend as something like f_1 and f_2:

How can I change the default names in the "Color" legend?

Answer 1

Set the color argument to a list of labels:

plot([sin, cos], 0, 25, color=["sine", "cosine"])