[Interest] Operator QMap<uint, uint>[] is casting to int?

Murphy, Sean smurphy at walbro.com
Fri May 3 16:57:39 CEST 2019

> uint foregroundPixels = reverseKeys[foregroundIndex];
> uint foregroundColor = reverseKeys[foregroundPixels]; //main.cpp:66:37: warning: implicit conversion changes signedness: 'uint' (aka 'unsigned int') to 'int'
> Where is the "signed" conversion happening?

foregroundPixels is a uint.
reverseKeys is a QList.

The QList subscript operator takes an int for the index (https://doc.qt.io/qt-5/qlist.html#operator-5b-5d), but you're passing it a uint.

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