Rosettacode tasks in Perl 6
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Quoting constructs
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Radical of an integer
Radical of an integer
Railway circuit
Rainbow
Ramanujan's constant
Ramanujan primes
Ramer-Douglas-Peucker line simplification
Ramsey's theorem
Random Latin squares
Random number generator device
Random number generator included
Random numbers
Random sentence from book
Range consolidation
Range expansion
Range extraction
Range modifications
Ranking methods
Rare numbers
Raster bars
Rate counter
Ray-casting algorithm
RCRPG
Read a configuration file
Read a file character by character
Read a file line by line
Read a specific line from a file
Read entire file
Readline interface
Real constants and functions
Recaman's sequence
Record sound
Recursive descent parser generator
Reduced row echelon form
Reflection
Regular expressions
Remove duplicate elements
Remove lines from a file
Remove vowels from a string
Rename a file
Rendezvous
Rep-string
Repeat
Repeat a string
Repunit primes
Resistance calculator
Resistance network calculator
Resistor mesh
Respond to an unknown method call
Retrieve and search chat history
Return multiple values
Reverse a string
Reverse the gender of a string
Reverse the order of lines in a text file while preserving the contents of each line
Reverse words in a string
Rhonda numbers
Rice coding
Riordan numbers
RIPEMD-160
Robots
Rock-paper-scissors
Rodrigues rotation formula
Roman numerals
Roots of a cubic polynomial
Roots of a function
Roots of a quadratic function
Roots of unity
Rosetta Code
Rot-13
Round-robin tournament schedule
RPG attributes generator
RSA code
Run-length encoding
Run as a daemon or service
Runge-Kutta method
Runtime evaluation
Ruth-Aaron numbers