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→{{header|langur}}
(→{{header|RPL}}: typo) |
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=={{header|D}}==
<syntaxhighlight lang="d">
import std.stdio, std.conv, std.string, std.array, std.typecons;
string menuSelect(in string[] entries) {
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try {
immutable n = input.to!int;
return typeof(return)((n >= 0 && n <= nEntries) ? n : -1);
} catch (Exception e) // Very generic
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writefln(" %d) %s", i, entry);
"> ".write;
immutable input = readln.chomp;
immutable choice = validChoice(input, cast(int) (entries.length - 1));
if (choice.isNull)
"Wrong choice.".writeln;
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immutable items = ["fee fie", "huff and puff",
"mirror mirror", "tick tock"];
writeln("You chose '", items.menuSelect, "'.");
}
{{out}}
<pre>
Choose one:
0) fee fie
1) huff and puff
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3) tick tock
> 2
You chose 'mirror mirror'.
</pre>
=={{header|Delphi}}==
{{libheader| System.SysUtils}}
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=={{header|langur}}==
<syntaxhighlight lang="langur">
if entries is not
if
# print the menu
writeln join
val
"Select entry #: ",
if not
val
},
"invalid selection\n", -1,
) -> number
}
writeln
</syntaxhighlight>
{{out}}
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=={{header|Wren}}==
{{libheader|Wren-ioutil}}
<syntaxhighlight lang="
var menu = Fn.new { |list|
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