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Task/Pangram-checker/Retro/pangram-checker.retro
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Task/Pangram-checker/Retro/pangram-checker.retro
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@ -0,0 +1,5 @@
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: isPangram? ( $-f )
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^strings'toLower
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heap [ 27 allot ] preserve
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[ @ 'a - dup 0 25 within [ [ 'a + ] [ here + ] bi ! ] &drop if ]
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^types'STRING each@ here "abcdefghijklmnopqrstuvwxyz" compare ;
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