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mustBeA - janklab.mlxshake.internal.util

MUSTBEA Validate that an input is of a particular data type

MUSTBEA(value, type)

Validates that the input Value is of the specified Type or a subtype. If Value is not of Type, an error is raised. If Value is of Type, does nothing and returns.

Value is the value to validates the type of. It may be anything. If you call it using a variable (as opposed to a longer expression), the variable name is included in any error messages.

Type (char) is the name of the type that Value must be. A type name may be one of:

Note: The cellstr pseudotype is nontrivial to check for, as it must call iscellstr() and check all cell contents. Avoid calling it in performance-critical code.