%list:LIST% size
Returns the number of elements in a list (postfix syntax).
set count to myList size
Every distinct way you can write this pattern, with optional groups and choice groups expanded. Placeholders are shown as <name>.
<list> size
new list
new list [of] %type:EXPR%
size of %list:LIST%
get %list:LIST% at [index] %i:INT%
%list:LIST% index of %val:EXPR%
size of %list:LIST% for %scope:EXPR%
%list:LIST% size for %scope:EXPR%