Undefined values: Difference between revisions
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2. For variables that are defined for the Julia program but have undefined values, there are two different notions of undefined value in Julia (version > 0.7): <code> nothing </code> and <code> missing </code>. "nothing" and "missing" are constants used by convention to refer to either (with <code> nothing </code>) an absent result, such as a search with nothing found, or in the case of <code> missing, </code> a data location containing a missing value, such as a data table with missing values. |
2. For variables that are defined for the Julia program but have undefined values, there are two different notions of undefined value in Julia (version > 0.7): <code> nothing </code> and <code> missing </code>. "nothing" and "missing" are typed constants used by convention to refer to either (with <code> nothing </code>) an absent result, such as a search with nothing found, or in the case of <code> missing, </code> a data location containing a missing value, such as a data table with missing values. |
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=={{header|Kotlin}}== |
=={{header|Kotlin}}== |
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