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12.1.0 released on Sep 19, 2022

Error code


Many Vely statements return status with VV_ERR_... error codes, which are generally descriptive to a point. Such status is not as detailed as the operating system "errno" variable, however whenever possible, you can use "errno" clause in get-req statement to obtain the last known errno value from aforementioned statements.

In the following example, a directory is attempted to be deleted via delete-file, which will fail with VV_ERR_DELETE - however you can get a more specific code via "errno" (which in this case is "21", or "EISDIR", which means that it cannot delete a directory with this statement):
delete-file "some_directory" status define stc
if (stc == VV_ERR_DELETE) {
    @Cannot delete file
    get-req errno to define e
    pf-out "Error %lld\n", e


Error handling ( error_code   error_handling   on-error   report-error  )  SEE ALL (documentation)

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