Variable Scoping

The variable scoping semantics are pretty unique because every function call is evaluated relative to the cell where it is used. As you've seen so far you can use [[var=...]] to bind a variable name to a given cell. As an example of scoping semantics we'll use this csv++ template:

foo_from_code_section := 42
---
[[var=bar_outside_fill]]    ,,,,,
![[fill=2]]bar              , \
  [[var=bar_in_fill]]       , \
  =bar_in_fill              , \
  =bar_outside_fill         , \
  =foo_from_code_section    ,

which will compile to:

     ,     ,     ,     ,
bar  ,     , =B2 , =A1 , =42
bar  ,     , =B3 , =A1 , =42

Breaking this down:

• foo_from_code_section - Is always 42 no matter where it is used.
• bar_in_fill - Since it is defined within an ![[fill]], it's value depends on the final row, which will be B2 or B3
• bar_outside_fill - Will always be A1, pointing to the cell where it was defined. There is no relative aspect to it since it's not defined in an fill.