callback::impl_exists (public)

 callback::impl_exists -callback callback -impl impl

Defined in packages/acs-tcl/tcl/callback-procs.tcl

Returns whether the specified implementation exists.

Switches:

-callback (required)

-impl (required)

Testcases:

No testcase defined.

Source code:

    return [expr {[namespace which ::callback::${callback}::impl::${impl}] ne ""}]

XQL Not present:

Generic, PostgreSQL, Oracle