serialize: only first props?

[jedahu]

Just curious. Why do the serialize methods take multiple props but only use the first one?

[pjt]

Are you seeing a bug in practice, or asking based on the code?

If the latter, it may not be clear from context but the properties value there is a map from properties to values. It's an optional argument, so I use the & variable args construct: (defn f [& props] ... ), which means that in the body of the function props is actually bound to a seq with one item. Calling first simply extracts the map from the seq.

Another way to handle this case is with destructuring: (defn f [& [props]] ... ) in which case props will be bound to the first item passed, not to the seq created by the ampersand.

[jedahu]

I was asking based on the code, mainly because I've written a serialize-to-string function and wanted to be sure of your intent. Personally I prefer the destructuring option because it makes it clear the function takes only one additional argument, but each to their own :-).