Undefined values: Difference between revisions
Content added Content deleted
m (Added the Sidef language) |
m (→{{header|Sidef}}: typo fix) |
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=={{header|Sidef}}== |
=={{header|Sidef}}== |
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Sidef variables are initialized with a default ''nil'' value, |
Sidef variables are initialized with a default ''nil'' value, representing the absence of a value. |
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<lang ruby>var x; # declared, but not defined |
<lang ruby>var x; # declared, but not defined |
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x == nil && say "nil value"; |
x == nil && say "nil value"; |