Version 1 of Feature Request: lappend return index

lappend is a wonderful command to append to a tcl-list. The problem is to get the index of the last insert.

I Use this to convert and handle into a number and return the number to an external ressource

Old Code

  # factory startup (constructor)
  constructor {{tmpl ""}} {
    next $tmpl
    my ConfigSetServerSetup serverSetup
    my variable LcConfigC_Idx
    set LcConfigC_Idx -1
  }

  method LcConfigC_WriteHDL { hdl } {
    my variable  LcConfigC_Handle LcConfigC_Idx
    lappend LcConfigC_Handle $hdl
    incr LcConfigC_Idx
  }

As you see to return the index it is required to maintain a second variable (in my case LcConfigC_Idx) and init the second variable in the constructor to -1

Feature Request

please add an -index option to lappend just to return the index of the new created element and not the whole list.

New Code

  # factory startup (constructor)
  constructor {{tmpl ""}} {
    next $tmpl
    my ConfigSetServerSetup serverSetup
  }

  method LcConfigC_WriteHDL { hdl } {
    my variable  LcConfigC_Handle
    lappend -index LcConfigC_Handle $hdl
  }