| Official website |
|---|
| Execution method: | Interpreted |
|---|---|
| Garbage collected: | Yes |
| Type safety: | Safe |
| Type strength: | Strong |
| Type expression: | Implicit |
| Type checking: | Dynamic |
| See Also: |
Wren is a lightweight,object-orientedprogramming language designed to be an easily-embeddable scripting language.
It is under development onGitHub and is fully documentedhere.
The CLI tool (Wren CLI) has its own repository and is the main focus of examples written for RC.The latest version 0.4.0 is available as a pre-built standalone executable for 64-bit Linux, MacOS and Windows and can be downloaded fromhere.
As a language mainly designed for embedding, Wren's standard library is (of necessity) quite small and I (PureFox) have therefore decided to create some additional modules to assist with writing Rosetta Code tasks so the same code does not have to be written or copy/pasted time and time again thereby bloating a task's script code unnecessarily. The ones written so far are listed below:
| No. | Module name | No. | Module name | |
|---|---|---|---|---|
| 1 | fmt | 2 | str | |
| 3 | sort | 4 | math | |
| 5 | trait | 6 | seq | |
| 7 | date | 8 | rat | |
| 9 | pattern | 10 | big | |
| 11 | upc | 12 | matrix | |
| 13 | set | 14 | llist | |
| 15 | queue | 16 | complex | |
| 17 | dynamic | 18 | ioutil | |
| 19 | long | 20 | crypto | |
| 21 | sound | 22 | polygon | |
| 23 | srandom | 24 | lsystem | |
| 25 | turtle | 26 | ellipse | |
| 27 | check | 28 | array | |
| 29 | gmp | 30 | ecm | |
| 31 | sql | 32 | event | |
| 33 | i64 | 34 | perm | |
| 35 | linear | 36 | regex | |
| 37 | maputil | 38 | plot | |
| 39 | debug | 40 | table | |
| 41 | iterate | 42 | money | |
| 43 | vector | 44 | ordered | |
| 45 | psieve | 46 | hash | |
| 47 | roman | 48 | std | |
| 49 | ansi |
To use a class or classes from a module (sayfmt), you need to import them into your script with Wren code such as the following. To use more than one class separate their names with commas:
import"./fmt"forConv,Fmt
These modules are subject to the same license as any other code submitted to Rosetta Code though contributors' user pages should be checked to see whether more permissive terms are available. If anyone wishes to add further modules, please do so using a similar model and append them to the list.
Please note that when creating a category for a new module its name should be prefixed with 'Wren-' as in 'Wren-fmt' and the library header for a task which uses the module should therefore use this name. Modules will normally have generic names and this convention allows Rosetta Code users to easily distinguish Wren modules from similarly named modules/libraries written for other languages.
There are also a number of third-party modules available for Wren of which the following have been used to write solutions for Rosetta Code tasks:
| No. | Module name | No. | Module name | |
|---|---|---|---|---|
| 1 | DOME | 2 | Raylib-wren | |
| 3 | SpiderWren | 4 | Wren-assert | |
| 5 | Wren-json | 6 | Wren-test | |
| 7 | WrenGo | 8 | Wren-xsequence |
For further information and licensing requirements, please consult their individual pages.
Finally, there are some RC tasks which require a special C executable to solve but where it is not worthwhile to create a dedicated module to house the Wren source code. Seelibwren for details.
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