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Determine if a string is numeric: Difference between revisions
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1 1 0</lang>
Works with more recent versions of <B>Dyalog APL</B><lang apl> ⊃⎕VFI '¯' @ ('-'∘=) '152 -3.1415926 Foo123' ⍝ Fast: replacement of - with APL high-minus required for ⎕VFI
1 1 0
⊃⎕VFI '-'
1 1 0</lang>
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