87 lines
9.8 KiB
Markdown
87 lines
9.8 KiB
Markdown
Operators and Symbols
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=====================
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{{#include ../links.md}}
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Operators
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---------
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| Operator | Description | Binary? | Binding direction |
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| :------------------------------------------------------------------------------------------: | -------------------------------------- | :--------: | :---------------: |
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| `+` | add | yes | left |
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| `-` | 1) subtract<br/>2) negative (prefix) | yes<br/>no | left<br/>right |
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| `*` | multiply | yes | left |
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| `/` | divide | yes | left |
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| `%` | modulo | yes | left |
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| `**` | power/exponentiation | yes | right |
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| `>>` | right bit-shift | yes | left |
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| `<<` | left bit-shift | yes | left |
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| `&` | 1) bit-wise _AND_<br/>2) boolean _AND_ | yes | left |
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| <code>\|</code> | 1) bit-wise _OR_<br/>2) boolean _OR_ | yes | left |
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| `^` | 1) bit-wise _XOR_<br/>2) boolean _XOR_ | yes | left |
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| `=`, `+=`, `-=`, `*=`, `/=`,<br/>`**=`, `%=`, `<<=`, `>>=`, `&=`,<br/><code>\|=</code>, `^=` | assignments | yes | n/a |
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| `==` | equals to | yes | left |
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| `!=` | not equals to | yes | left |
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| `>` | greater than | yes | left |
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| `>=` | greater than or equals to | yes | left |
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| `<` | less than | yes | left |
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| `<=` | less than or equals to | yes | left |
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| `&&` | boolean _AND_ (short-circuits) | yes | left |
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| <code>\|\|</code> | boolean _OR_ (short-circuits) | yes | left |
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| `??` | null-coalesce (short-circuits) | yes | left |
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| `!` | boolean _NOT_ | **no** | right |
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| `[` ... `]`, `?[` ... `]` | indexing | yes | left |
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| `.`, `?.` | 1) property access<br/>2) method call | yes | left |
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| `..` | exclusive range | yes | left |
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| `..=` | inclusive range | yes | left |
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Symbols and Patterns
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--------------------
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| Symbol | Name | Description |
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| :---------------------------------: | ---------------------------------- | ------------------------------------- |
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| `_` | underscore | default `switch` case |
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| `;` | semicolon | statement separator |
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| `,` | comma | list separator |
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| `:` | colon | [object map] property value separator |
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| `::` | path | module path separator |
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| `#{` ... `}` | hash map | [object map] literal |
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| `"` ... `"` | double quote | [string] |
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| `` ` `` ... `` ` `` | back-tick | multi-line literal [string] |
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| `'` ... `'` | single quote | [character] |
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| `\` | 1) escape<br/>2) line continuation | escape character literal |
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| `()` | unit | null value |
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| `(` ... `)` | parentheses | expression grouping |
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| `{` ... `}` | braces | block statement |
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| <code>\|</code> ... <code>\|</code> | pipes | closure |
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| `[` ... `]` | brackets | [array] literal |
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| `!` | bang | function call in calling scope |
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| `=>` | double arrow | `switch` expression case separator |
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| `//` | comment | line comment |
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| `///` | doc-comment | line [doc-comment] |
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| `//!` | module doc | [module documentation][comments] |
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| `/*` ... `*/` | comment | block comment |
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| `/**` ... `*/` | doc-comment | block [doc-comment] |
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| `(*` ... `*)` | comment | _reserved_ |
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| `#!` | shebang | _reserved_ |
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| `++` | increment | _reserved_ |
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| `--` | decrement | _reserved_ |
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| `...` | rest | _reserved_ |
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| `~` | tilde | _reserved_ |
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| `!.` | | _reserved_ |
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| `?` | question | _reserved_ |
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| `#` | hash | _reserved_ |
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| `@` | at | _reserved_ |
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| `$` | dollar | _reserved_ |
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| `->` | arrow | _reserved_ |
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| `<-` | left arrow | _reserved_ |
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| <code><\|</code> | left triangle | _reserved_ |
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| <code>\|></code> | right triangle | _reserved_ |
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| `===` | strict equals to | _reserved_ |
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| `!==` | strict not equals to | _reserved_ |
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| `:=` | assignment | _reserved_ |
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| `:;` | typo to `::` | _reserved_ |
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| `::<` ... `>` | turbofish | _reserved_ |
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