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Merge pull request #6573 from Icinga/bugfix/operator-docs-1 

Fix operator precedence table
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Michael Friedrich 2018-09-11 09:12:15 +02:00 committed by GitHub
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@ -160,38 +160,38 @@ The following operators are supported in expressions. The operators are sorted b
Operator | Precedence | Examples (Result) | Description
---------|------------|-----------------------------------------------|--------------------------------
() | 1 | (3 + 3) * 5 | Groups sub-expressions
() | 1 | Math.random() | Calls a function
[] | 1 | a[3] | Array subscript
. | 1 | a.b | Element access
! | 2 | !"Hello" (false), !false (true) | Logical negation of the operand
~ | 2 | ~true (false) | Bitwise negation of the operand
+ | 2 | +3 | Unary plus
- | 2 | -3 | Unary minus
& | 2 | &var (reference to 'var') | Reference operator
* | 2 | *var | Indirection operator
* | 3 | 5m * 10 (3000) | Multiplies two numbers
/ | 3 | 5m / 5 (60) | Divides two numbers
% | 3 | 17 % 12 (5) | Remainder after division
+ | 4 | 1 + 3 (4), "hello " + "world" ("hello world") | Adds two numbers; concatenates strings
- | 4 | 3 - 1 (2) | Subtracts two numbers
<< | 5 | 4 << 8 (1024) | Left shift
>> | 5 | 1024 >> 4 (64) | Right shift
< | 6 | 3 < 5 (true) | Less than
> | 6 | 3 > 5 (false) | Greater than
<= | 6 | 3 <= 3 (true) | Less than or equal
>= | 6 | 3 >= 3 (true) | Greater than or equal
in | 7 | "foo" in [ "foo", "bar" ] (true) | Element contained in array
!in | 7 | "foo" !in [ "bar", "baz" ] (true) | Element not contained in array
== | 8 | "hello" == "hello" (true), 3 == 5 (false) | Equal to
!= | 8 | "hello" != "world" (true), 3 != 3 (false) | Not equal to
& | 9 | 7 & 3 (3) | Binary AND
^ | 10 | 17 ^ 12 (29) | Bitwise XOR
&#124; | 11 | 2 &#124; 3 (3) | Binary OR
&& | 13 | true && false (false), 3 && 7 (7), 0 && 7 (0) | Logical AND
&#124;&#124; | 14 | true &#124;&#124; false (true), 0 &#124;&#124; 7 (7)| Logical OR
= | 12 | a = 3 | Assignment
=> | 15 | x => x * x (function with arg x) | Lambda, for loop
`()` | 1 | (3 + 3) * 5 | Groups sub-expressions
`()` | 1 | Math.random() | Calls a function
`[]` | 1 | a[3] | Array subscript
`.` | 1 | a.b | Element access
`!` | 2 | !"Hello" (false), !false (true) | Logical negation of the operand
`~` | 2 | ~true (false) | Bitwise negation of the operand
`+` | 2 | +3 | Unary plus
`-` | 2 | -3 | Unary minus
`&` | 2 | &var (reference to 'var') | Reference operator
`*` | 2 | *var | Indirection operator
`*` | 3 | 5m * 10 (3000) | Multiplies two numbers
`/` | 3 | 5m / 5 (60) | Divides two numbers
`%` | 3 | 17 % 12 (5) | Remainder after division
`+` | 4 | 1 + 3 (4), "hello " + "world" ("hello world") | Adds two numbers; concatenates strings
`-` | 4 | 3 - 1 (2) | Subtracts two numbers
`<<` | 5 | 4 << 8 (1024) | Left shift
`>>` | 5 | 1024 >> 4 (64) | Right shift
`<` | 6 | 3 < 5 (true) | Less than
`>` | 6 | 3 > 5 (false) | Greater than
`<=` | 6 | 3 <= 3 (true) | Less than or equal
`>=` | 6 | 3 >= 3 (true) | Greater than or equal
`in` | 7 | "foo" in [ "foo", "bar" ] (true) | Element contained in array
`!in` | 7 | "foo" !in [ "bar", "baz" ] (true) | Element not contained in array
`==` | 8 | "hello" == "hello" (true), 3 == 5 (false) | Equal to
`!=` | 8 | "hello" != "world" (true), 3 != 3 (false) | Not equal to
`&` | 9 | 7 & 3 (3) | Binary AND
`^` | 10 | 17 ^ 12 (29) | Bitwise XOR
<code>&#124;</code> | 11 | 2 &#124; 3 (3) | Binary OR
<code>&#124;&#124;</code> | 12 | true &#124;&#124; false (true), 0 &#124;&#124; 7 (7)| Logical OR
`&&` | 13 | true && false (false), 3 && 7 (7), 0 && 7 (0) | Logical AND
`=` | 14 | a = 3 | Assignment
`=>` | 15 | x => x * x (function with arg x) | Lambda, for loop
### References <a id="references"></a>