Advice for appendLeft() vs. appendRight().

[jdalton]

Could you provide an example or guidance for when appendLeft() and appendRight() should be used. I'm not sure which situations I should use one or the other.

[alangpierce]

Hey @jdalton! I wrote up some advice in #109 (comment) that you might find useful.

If you have relatively few operations that you're doing, then it may be convenient to take advantage of the fact that appendLeft things will always be to the left of appendRight things, and that if you intend to call move or slice, you'll keep appendLeft things but not appendRight things, in case you want to include/exclude recently-inserted parens, for example. But for more complex cases, my experience is that the system breaks down and it's best to always do appendLeft and to be careful to do all the operations in left-to-right order.

[jdalton]

Thank you @alangpierce!