Empty string: Difference between revisions
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added OpenEdge solution |
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s2 empty? false |
s2 empty? false |
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</pre> |
</pre> |
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=={{header|OpenEdge/Progress}}== |
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Strings can be stored in CHARACTER and LONGCHAR variables. Both are initially empty. Both can also be unknown. A CHARACTER has a maximum length of approx 32000 bytes. |
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<lang progress>DEFINE VARIABLE cc AS CHARACTER. |
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IF cc > '' THEN |
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MESSAGE 'not empty' VIEW-AS ALERT-BOX. |
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ELSE IF cc = ? THEN |
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MESSAGE 'unknown' VIEW-AS ALERT-BOX. |
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ELSE |
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MESSAGE 'empty' VIEW-AS ALERT-BOX. |
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</lang> |
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=={{header|PARI/GP}}== |
=={{header|PARI/GP}}== |