Interactive help: Difference between revisions
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=={{header|AWK}}== |
=={{header|AWK}}== |
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<syntaxhighlight lang="awk"> |
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<lang AWK> |
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# syntax: GAWK --help |
# syntax: GAWK --help |
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</syntaxhighlight> |
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</lang> |
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{{out}} |
{{out}} |
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<pre> |
<pre> |
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=={{header|Julia}}== |
=={{header|Julia}}== |
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When Julia is run without a program file as argument, the REPL (Read-Evaluate-Print Loop) runs. Entering a ? at the prompt brings up help, with help on a specific topic obtained if the topic name is preceded by ? at the prompt. |
When Julia is run without a program file as argument, the REPL (Read-Evaluate-Print Loop) runs. Entering a ? at the prompt brings up help, with help on a specific topic obtained if the topic name is preceded by ? at the prompt. |
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< |
<syntaxhighlight lang="julia"> |
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> julia |
> julia |
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The use of the return keyword is exactly the same as in other languages, but is often optional. A function without |
The use of the return keyword is exactly the same as in other languages, but is often optional. A function without |
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an explicit return statement will return the last expression in the function body. |
an explicit return statement will return the last expression in the function body. |
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</syntaxhighlight> |
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</lang> |
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=={{header|Nim}}== |
=={{header|Nim}}== |
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Individual Raku scripts are to some extent self-documenting. If the script has a MAIN sub, and it is called with improper parameters, it will display an automatically generated help message showing the various possible parameters, which are required, which are optional, and what type each takes: |
Individual Raku scripts are to some extent self-documenting. If the script has a MAIN sub, and it is called with improper parameters, it will display an automatically generated help message showing the various possible parameters, which are required, which are optional, and what type each takes: |
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<lang |
<syntaxhighlight lang="raku" line>sub MAIN( |
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Str $run, #= Task or file name |
Str $run, #= Task or file name |
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Str :$lang = 'raku', #= Language, default raku |
Str :$lang = 'raku', #= Language, default raku |
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) { |
) { |
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# do whatever |
# do whatever |
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}</ |
}</syntaxhighlight> |
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{{out|When saved locally as main.raku and invoked with no (or wrong) passed parameters}} |
{{out|When saved locally as main.raku and invoked with no (or wrong) passed parameters}} |
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