title: I hav a tcl dict with key and value pair, where value is list and I want to check if the new value is already present or not?
body: <pre><code>set a [dict create]
  set key abc
  set value bb
  
  dict set $a $key $value
  Ans:- abc bb
  </code></pre>
  
  <p>but when I try:</p>
  
  <pre><code>dict exists $a $key bb 
  </code></pre>
  
  <p>It returns 0. ?</p>
  
  <p>Could you help me get the right syntax for this ? </p>