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Matus Tejiscak 2020-04-23 23:11:13 +02:00
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docs/source/tutorial/typesfuns.rst
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@ -1036,7 +1036,9 @@ Nested record fields can be accessed using the dot notation:
x.a.b.c x.a.b.c
map (.a.b.c) xs map (.a.b.c) xs
There must be no spaces after the dots. For the dot notation, there must be no spaces after the dots but there may be
spaces before the dots. The composite projection must be parenthesised,
otherwise ``map .a.b.c xs`` would be understood as ``map.a.b.c xs``.
Nested record fields can be accessed using the prefix notation, too: Nested record fields can be accessed using the prefix notation, too:
@ -1045,7 +1047,7 @@ Nested record fields can be accessed using the prefix notation, too:
(c . b . a) x (c . b . a) x
map (c . b . a) xs map (c . b . a) xs
Here, the spaces turn the dots into function composition operators. Dots with spaces around them stand for function composition operators.
Nested record update Nested record update
~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~