Sfairadora

  • Reference Guide

is_allowed

is_allowed(lval)
is_allowed(ref)
Determines, whether the specified l-value lval or reference ref (the type Dref) refers to a valid data item – either existing or optional (that is such a data item that possibly does not exist, but can be created by assigning a value). The function return TRUE, when the data item is allowed, and FALSE otherwise. A value of the type Dref can be created with the typecast operator from a string.

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