Anonymous recursion: Difference between revisions

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=={{header|K}}==
{{works with|Kona}}
<syntaxhighlight lang="k">fib: {:[x<0; "Error Negative Number"; {:[x<2;x;_f[x-2]+_f[x-1]]}x]}</syntaxhighlight>
or{{works [[with|ngn/k]]}}:
<syntaxhighlight lang=K>fib: {:[x<0; "Error Negative Number"; {:[x<2;x;o[x-2]+o[x-1]]}x]}</syntaxhighlight>
'''Examples:'''
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