24 lines
870 B
Plaintext
24 lines
870 B
Plaintext
Many language implementations come with an ''interactive mode''.
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This is a [[wp:command-line interpreter|command-line interpreter]] that reads lines from the user and evaluates these lines as statements or expressions.
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An interactive mode may also be known as a ''command mode'', a ''[[wp:read-eval-print loop|read-eval-print loop]]'' (REPL), or a ''shell''.
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;Task:
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Show how to start this mode.
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Then, as a small example of its use, interactively create a function of two strings and a separator that returns the strings separated by two concatenated instances of the separator (the 3<sup>rd</sup> argument).
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;Example:
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<big> f('Rosetta', 'Code', ':') </big>
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should return
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<big> 'Rosetta::Code' </big>
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;Note:
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This task is ''not'' about creating your own interactive mode.
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<br><br>
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