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Query External Variable R←⎕XT Y

Y must be a simple character scalar or vector which is taken to be a variable name. R is a simple character vector containing the file reference of the external array associated with the variable named by Y, or the null vector if there is no associated external array.

Example

      ⎕XT'V'
EXT\ARRAY

      ⍴⎕XT'G'
0

Information

Support for external variables has been deprecated. They are no longer supported by default, although setting the DYALOG_EXTVAR_SUPPORTED configuration parameter to 1 reinstates support (support is scheduled for removal in a future release). For information on how to identify uses of external variables in your existing codebase, see the Release Notes.

⎕XT XT