"Ruby" (External Evaluation System)

Details

Ruby Version 2.0 and higher is supported.
To configure Ruby for use in the Wolfram Language, follow the instructions from the Configure Ruby for ExternalEvaluate workflow.

ExternalEvaluate["Ruby",code] executes the code string in a Ruby REPL and returns the results as a Wolfram Language expression.
ExternalEvaluate["Ruby""String",code] executes the code string in a Ruby REPL and returns the output as a Wolfram Language string.

Array	List	array of values
BigDecimal	Real	arbitrary-precision real number
Bignum	Integer	arbitrary-sized integer
boolean	True\|False	Boolean values
Complex	Complex	complex number
Fixnum	Integer	machine-size number
Float	Real	real-valued number
Hash	Association	associative array
nil	Null	null value
Rational	Rational	rational number
String	String	sequence of character values

String templates (<*…*>) can be used to evaluate and insert Wolfram Language expressions into the Ruby code string.

open allclose all

Evaluate 2+2 in Ruby and return the result:

Arrays are returned as lists:

Type > and select Ruby from the drop-down menu to get a code cell that uses ExternalEvaluate to evaluate:

[1,2,3,4].map { |n| n * 2 }

Start a session:

Concatenate strings in Ruby and return the result:

Hashes in Ruby are returned as associations:

Close the session:

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