Add tap maybe
#19
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Add tap maybe
#19
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* Tapping a connector, or the `tap` function, is a syntactic sugar feature, that wraps the chaining call to `connect` on the signal provided by a `connector` when calling `connect`. The given `tapFn` will then be applied with the signals next and previous value - which conveniently is provided the other way around from the signal function (which is applied with id, prev, and then next). This is aimed at being a very useful and simple way to _tap_ into some signal state that is being changed. Often this technique can be used in conjuction with effects, or triggers, to build behaviour not just with connectors and events, but also by _listening_ to maintained signal state - such as the `db` - in independent modules.
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So I've just put in the most simple thing I could think of, which would offer the
tapAPI that I use and like.It's really not much, but perhaps you could chime in and tell me what you think.
Some strange things though, I'll try to start a discussion in the code, the test I wrote failed for the example with
rawConnector()- and I would like to understand why.