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Home/ Questions/Q 169847
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Asked: May 11, 20262026-05-11T12:42:13+00:00 2026-05-11T12:42:13+00:00

I have code like this: type TMyDictionary = TDictionary<int, int>; var myDict: TMyDictionary; k,

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I have code like this:

type   TMyDictionary = TDictionary<int, int>;  var   myDict: TMyDictionary;   k, v: integer;    // code to fill the dictionary    for k in myDict.Keys do   begin      v := myDict.Items[k];       // other stuff   end; 

Randomly I see an exception thrown on ‘v := myDict.Items[k];’ which says k is invalid.

Anyone else seen this?

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  1. 2026-05-11T12:42:13+00:00Added an answer on May 11, 2026 at 12:42 pm

    Looking at CodeCentral I see a number of bugs raised against TDictionary and in particular the enumerator that supports the for … in … construct.

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