* Clarify the use of the backwards index operator (^N) in tut1
For consistency:
- Do `[a .. ^b]` (notice spaces on both sides of `..`)
- Do `[c ..< d]` (notice spaces on both sides of `..<`)
Fixes https://github.com/nim-lang/Nim/issues/14671.
* tut1: Add a note that ^ template calls can be saved to consts
In general: s/have to/must/g - but you can't do this mechanically because sometimes the must has to go back a word (e.g., line 519).
This looks really odd to me:
if thisIsaLongCondition() and
thisIsAnotherLongCondition(1,
2, 3, 4):
x = true
I would have expected:
if thisIsaLongCondition() and
thisIsAnotherLongCondition(
1, 2, 3, 4):
x = true
If the second form is valid and good Nim style then I suggest using it rather than the original. However, if the original is the preferred style then this should be mentioned in the text since it is unusual.
Since Nim is case-sensitive I think it is bad to write wrongly cased names, e.g., ``Bool`` is a built-in type on line 589. This isn't true since Bool isn't anything, but bool is. So in these cases I'd always reword to avoid this problem (and that's what I've done -- and it also avoids "bool. Bool" which was ugly).
In a code example I think it best to either use full names (index, item) or abbreviated names where that's common (i, item) but not non-standard abbreviations (indx, itm). So I've changed it to index, item since it is a tutorial, although i, item would be just as good.
* tut1: added multiline comments
* tut2: replaced expr/stmt with untyped/typed
* added some more template/macro example
* remove immediate pragma from example
