I would like to know what the operations mean in the picture. Most what the line, 'getStartPrice()== (return startPrice)' mean.
I'm really new too this.
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The "getStartPrice() ==" line defines the action of the operation. What may be a surpise is that an operation (or function) definition starts with two lines. The first line defines the type signature, like "op: nat * nat ==> nat", and the second line names the parameters, like "op(a, b) == ...". The body of the operation can then follow after the "==", unless it is implicit.