membership (MathScript Class) (Windows, Not in Base Package)
Use members of the membership class to determine if elements belong to a given class of objects.
| Function | Description |
| class | Returns data type |
| exist | Variable, file, or directory exists |
| isa | Variable is in class? |
| ischar | Is a string? |
| isdir | String represents a directory? |
| isempty | Matrix is empty? |
| isfinite | Elements are finite? |
| isglobal | Variable is global? |
| isieee | Arithmetic based on IEEE? |
| isinf | Numbers are +inf or -inf? |
| iskeyword | String is a keyword? |
| isletter | Characters are letters? |
| islogical | Matrix is Boolean? |
| ismember | Member of a set? |
| isnan | Elements are NaN? |
| isnumeric | Matrix is numeric? |
| isprime | Elements are prime? |
| isreal | Matrix is real? |
| isscalar | Is a scalar? |
| issorted | Matrix is sorted? |
| isspace | Elements represent white spaces? |
| isstr | Matrix is a string? |
| isvarname | String is valid variable name? |
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