Anonymous recursion: Difference between revisions
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=={{header|K}}==
<syntaxhighlight lang="k">fib: {:[x<0; "Error Negative Number"; {:[x<2;x;_f[x-2]+_f[x-1]]}x]}</syntaxhighlight>
or [[ngn/k]]:
<syntaxhighlight lang=K>fib: {:[x<0; "Error Negative Number"; {:[x<2;x;o[x-2]+o[x-1]]}x]}</syntaxhighlight>
'''Examples:'''
<syntaxhighlight lang="k"> fib'!10
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