Category:Wren
This programming language may be used to instruct a computer to perform a task.
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, objectoriented programming language designed to be an easilyembeddable scripting language.
It is under development on GitHub and is fully documented here.
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 prebuilt standalone executable for 64bit Linux, MacOS and Windows and can be downloaded from here.
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 
To use a class or classes from a module (say fmt), 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" for Conv, 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 'Wrenfmt' 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 thirdparty 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  Raylibwren  
3  SpiderWren  4  Wrenassert  
5  Wrenjson  6  Wrentest  
7  WrenGo  8  Wrenxsequence 
For further information and licensing requirements, please consult their individual pages.
Todo
Pages in category "Wren"
The following 200 pages are in this category, out of 1,681 total.
(previous page) (next page)C
 Chaocipher
 Chaos game
 Character codes
 Chat server
 Chebyshev coefficients
 Check if a polygon overlaps with a rectangle
 Check if two polygons overlap
 Check input device is a terminal
 Check Machinlike formulas
 Check output device is a terminal
 Check that file exists
 Checkpoint synchronization
 Checksumcolor
 Chemical calculator
 Chernick's Carmichael numbers
 Cheryl's birthday
 Chess player
 Chinese remainder theorem
 Chinese zodiac
 Cholesky decomposition
 Chowla numbers
 Church numerals
 Cipolla's algorithm
 Circles of given radius through two points
 Circular primes
 Cistercian numerals
 Classes
 CLIbased mazegame
 Closestpair problem
 Closures/Value capture
 Code Golf: Code Golf
 Code segment unload
 Collect and sort square numbers in ascending order from three lists
 Collections
 Color of a screen pixel
 Color quantization
 Color separation
 Color wheel
 Colorful numbers
 Colour bars/Display
 Colour pinstripe/Display
 Colour pinstripe/Printer
 Combinations
 Combinations and permutations
 Combinations with repetitions
 Combinations with repetitions/Square digit chain
 Comma quibbling
 Commandline arguments
 Commatizing numbers
 Comments
 Common list elements
 Common sorted list
 Compare a list of strings
 Compare length of two strings
 Compare sorting algorithms' performance
 Compiletime calculation
 Compiler/AST interpreter
 Compiler/code generator
 Compiler/lexical analyzer
 Compiler/Preprocessor
 Compiler/Simple file inclusion pre processor
 Compiler/syntax analyzer
 Compiler/Verifying syntax
 Compiler/virtual machine interpreter
 Composite numbers k with no single digit factors whose factors are all substrings of k
 Compound data type
 Concatenate two primes is also prime
 Concurrent computing
 Conditional structures
 Conjugate a Latin verb
 Conjugate transpose
 Consecutive primes with ascending or descending differences
 Consistent overhead byte stuffing
 Constrained genericity
 Constrained random points on a circle
 Continued fraction
 Continued fraction convergents
 Continued fraction/Arithmetic/Construct from rational number
 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)
 Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
 Convert CSV records to TSV
 Convert decimal number to rational
 Convert seconds to compound duration
 Convex hull
 Conway's Game of Life
 Coprime triplets
 Coprimes
 Copy a string
 Copy stdin to stdout
 CORDIC
 Count how many vowels and consonants occur in a string
 Count in factors
 Count in octal
 Count occurrences of a substring
 Count the coins
 Count the coins/01
 Countdown
 Cousin primes
 Cramer's rule
 CRC32
 Create a file
 Create a file on magnetic tape
 Create a twodimensional array at runtime
 Create an executable for a program in an interpreted language
 Create an HTML table
 Create an object at a given address
 Create an object/Native demonstration
 Create your own text control codes
 Cross compilation
 CSV data manipulation
 CSV to HTML translation
 Cuban primes
 Cubic special primes
 Cullen and Woodall numbers
 Cumulative standard deviation
 Currency
 Currying
 Curve that touches three points
 Curzon numbers
 CUSIP
 Cut a rectangle
 Cycle detection
 Cycles of a permutation
 Cyclops numbers
 Cyclotomic polynomial
D
 Damm algorithm
 Data Encryption Standard
 Date format
 Date manipulation
 Dating agency
 Day of the week
 Day of the week of Christmas and New Year
 Days between dates
 De Bruijn sequences
 De Polignac numbers
 Deal cards for FreeCell
 Death Star
 Deceptive numbers
 Decimal floating point number to binary
 Decision tables
 Deconvolution/1D
 Deconvolution/2D+
 Decoratesortundecorate idiom
 Decreasing contiguous subsequences
 Deepcopy
 Define a primitive data type
 Delegates
 Delete a file
 Deming's funnel
 Department numbers
 Descending primes
 Detect division by zero
 Determinant and permanent
 Determine if a string has all the same characters
 Determine if a string has all unique characters
 Determine if a string is collapsible
 Determine if a string is numeric
 Determine if a string is squeezable
 Determine if only one instance is running
 Determine if two triangles overlap
 Determine sentence type
 Dice game probabilities
 Digit fifth powers
 Digital root
 Digital root/Multiplicative digital root
 Dijkstra's algorithm
 Dinesman's multipledwelling problem
 Dining philosophers
 Diophantine linear system solving
 Disarium numbers
 Discordian date
 Discrete Fourier transform
 Display a linear combination
 Display an outline as a nested table
 Distance and Bearing
 Distinct palindromes within decimal numbers
 Distinct power numbers
 Distributed programming
 Distribution of 0 digits in factorial series
 Diversity prediction theorem
 Divide a rectangle into a number of unequal triangles
 DNS query
 Documentation
 Dominoes
 Doomsday rule
 Dot product
 Double Twin Primes
 Doublylinked list/Definition
 Doublylinked list/Element definition
 Doublylinked list/Element insertion
 Doublylinked list/Element removal
 Doublylinked list/Traversal
 Dragon curve
 Draw a clock
 Draw a cuboid
 Draw a pixel
 Draw a rotating cube
 Draw a sphere
 Draw pixel 2
 Duffinian numbers