F# Nullable operators
Nullable operators are used to work with database queries. It handles null values which are stored in tables in place of data.
| Nullable on left |
Nullable on right |
Both sides Nullable |
| ?> |
>? |
?>? |
| ?>= |
>=? |
?>=? |
| ?<= |
<=? |
?<=? |
| ?< |
<? |
?lt:? |
| ?= |
=? |
?=? |
| ?+ |
+? |
?+? |
You can apply nullable operators with all binary arithmetic and comparison operations.
F# Operator Precedence
Operator
|
Associativity
|
as |
right |
| when |
right
|
| |(pipe) |
left
|
| ; |
right
|
let
|
nonassociative
|
| function,fun,match,try |
nonassociative |
| if |
nonassociative
|
->
|
right
|
| := |
right
|
,
|
nonassociative |
or, ||
|
left
|
| &,&& |
left
|
:>; , :?>;
|
right |
!=op, <op, >op, =, |op, &op, &
(including <<<, >>>, |||, &&&) |
left |
^op (including ^^^) |
right |
| :: |
right
|
:? |
non associative
|
-op, +op |
applies to infix uses of these symbols
|
*op, /op, %op |
left |
**op |
right
|
f x (function application) |
left |
| (pattern match) |
right
|
prefix operators (+op, -op, %, %%, &, &&, !op, ~op) |
left |
| . |
left
|
f(x)
|
left
|
f<types> |
left |
|
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