Join, the reverse of split?

Question

Hi,
doing split on a string is easy in express... and you get an array as a result...
but there doesn't seem to be a corresponding join where you can add an array of string with a specific string as separator.
So, I should use concat... probably in combination with dolist
but there doesn't seem to be a good join functionality, the join tjat I can call adds spaces and cant be varied it seems
how would you recommend to emulate the normal join in xpress?

Answer 1

Replying to my own post then....
Got it to work, finally :-D
given an array, derived from the users view and some properties on each account...
pwsafeNames
<List>
  <String>Lighthouse</String>
  <String>AD</String>
  <String>AD|2</String>
</List>it builds a nice regular expression for my selectall checkbox :D
  <String>^resourceAccounts\\..+\\[(Lighthouse|AD|AD\\|2)]\\.selected$</String>with the following code...
<concat>
  &lt;s>^resourceAccounts\\..+</s>
  <cond>
    <gt>
      <length>
        <ref>pwsafeNames</ref>
      </length>
      &lt;i>0</i>
    </gt>
    <block>
      <set name='fixed'>
        <dolist name='pwname'>
          <ref>pwsafeNames</ref>
          <cond>
            <contains>
              <ref>pwname</ref>
              &lt;s>|</s>
            </contains>
            <block>
              <concat>
                <get>
                  <split>
                    <ref>pwname</ref>
                    &lt;s>|</s>
                  </split>
                  &lt;i>0</i>
                </get>
                &lt;s>\\|</s>
                <get>
                  <split>
                    <ref>pwname</ref>
                    &lt;s>|</s>
                  </split>
                  &lt;i>1</i>
                </get>
              </concat>
            </block>
            <ref>pwname</ref>
          </cond>
        </dolist>
      </set>
      <set name='pwarrsize'>
        <length>
          <ref>fixed</ref>
        </length>
      </set>
      <cond>
        <gt>
          <ref>pwarrsize</ref>
          &lt;i>0</i>
        </gt>
        <block>
          <set name='str'>
            <concat>
              &lt;s>\\[(</s>
              <get>
                <ref>fixed</ref>
                &lt;i>0</i>
              </get>
            </concat>
          </set>
          <set name='counter'>
            &lt;i>1</i>
          </set>
          <while>
            <gt>
              <ref>pwarrsize</ref>
              <ref>counter</ref>
            </gt>
            <block>
              <set name='str'>
                <concat>
                  <ref>str</ref>
                  &lt;s>|</s>
                  <get>
                    <ref>fixed</ref>
                    <ref>counter</ref>
                  </get>
                </concat>
              </set>
              <set name='counter'>
                <add>
                  <ref>counter</ref>
                  &lt;i>1</i>
                </add>
              </set>
            </block>
          </while>
          <set name='str'>
            <concat>
              <ref>str</ref>
              &lt;s>)]</s>
            </concat>
          </set>
        </block>
        <set name='str'>
          <concat>
            &lt;s></s>
          </concat>
        </set>
      </cond>
      <ref>str</ref>
    </block>
  </cond>
  &lt;s>\\.selected$</s>
</concat>To bad this forums code tag cant handle &lt;s> and &lt;i> tags, need to replace all &lt; with &amp;lt;
Edited by: Dhurgan on Nov 13, 2012 11:09 AM