batch remove

[choxi]

In this function, I'm deleting a list as well as its associated cards (since the data is relational):

deleteList(state, action) {
  ...

  cardIndexes.forEach((index) => {
    state = Tesseract.remove(state.cards, index)
  })

  return Tesseract.remove(state.lists, listIndex)
}

Maybe Tesseract.remove could take an array of indices as well as a single index?

Tesseract.remove(state.cards, cardIndexes)

We were also talking about batch updates the other day, this would be a very good use case for them. I expect that I want my removal of the list and it's associated cards to all happen in one transaction as opposed to individual actions:

state = Tesseract.transaction(() => {
    cardIndexes.forEach((index) => {
    state = Tesseract.remove(state.cards, index)
  })

  return Tesseract.remove(state.lists, listIndex)
})

return state

[ept]

I'm not sure it's worth adding the additional API surface area for this particular case (I think looping over the cards within a changeset block is not really that bad). Moreover, the transaction block won't actually guarantee that you won't end up with a card referencing a nonexistent list, because another user could concurrently add a card to the list without being aware that it is being deleted.

I'll close this issue, and instead open #29 to think in detail about what support for a relational data model on Tesseract should look like.