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Tcl question

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  • April 8, 2021 at 1:21 pm #118735
    David Ma
    Participant

      I have a tcl that has more message condition checks as following:

      if  {***} then

      {set mykill = TURE}

      if {XYZ} then {

      set mykill = TURE}

      ……………..

      Is there a way that the first message hits the first IF statement then stop going to check the second or third IF statement and check the second message? It will save some message process time in the engine.

       

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      • April 8, 2021 at 1:26 pm #118736
        Boris Perov
        Participant

          if {***} {
          set mykill TURE
          } elseif {XYZ} {
          set mykill TURE
          }

        • April 8, 2021 at 1:28 pm #118737
          Alfred Cox
          Participant

            Use an IF- ELSE instead of just IF. Like so:

            if {***} {

            set mykill = TRUE

            } else {

            if {XYZ} then {

            set mykill = TRUE}

            }

          • April 8, 2021 at 2:18 pm #118738
            Paul Bishop
            Participant

              Another option if the same field is being checked in all the conditions is to use the switch command.

              switch -exact — $field_to_check {
              “value 1” {action to take}
              “value 2” {action to take}
              …
              default {action to take}
              }

              There are two other options besides -exact: -glob and -regexp.  The “–” marks the end of the options, and the “default” entry is the action taken if no match is made.

              Paul Bishop
              Carle Foundation Hospital
              Urbana, IL

            • April 8, 2021 at 2:43 pm #118739
              David Ma
              Participant

                Thanks all!

                I mean if the first IF statement match, then tcl will not check the second ELSE IF statement. the TCL will stop after the first IF statemnet and start checking the second message. something like using if {ABC is ture} then {  lappend dispList “KILL $mh”}

              • April 9, 2021 at 5:04 am #118740
                Charlie Bursell
                Participant

                  What Boris gave you above is exactly what you ask for.  If the first if statement evaluates true then the elseif will not be evaluated.  That is the purpose of elseif.

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