I'm using Qt 4.8.6 msvc 2010. I'm working on a software (this is done before Qt5, I'm supporting now). I have used a map:
QMap<QDateTime, quint32> dateTime
After I insert some data to this map (for example with 5000 of data) and I want to get a value of a specified key, then the returned value is not correct value. To make this clearer, suppose there are following top 20 items of the map:
[0] Sun Dec 2 23:00:00 2018 0
key Sun Dec 2 23:00:00 2018 QDateTime
value 0 unsigned int
[1] Sun Dec 2 23:15:00 2018 1
key Sun Dec 2 23:15:00 2018 QDateTime
value 1 unsigned int
[2] Sun Dec 2 23:30:00 2018 2
key Sun Dec 2 23:30:00 2018 QDateTime
value 2 unsigned int
[3] Sun Dec 2 23:45:00 2018 3
key Sun Dec 2 23:45:00 2018 QDateTime
value 3 unsigned int
[4] (invalid) 4
key (invalid) QDateTime
value 4 unsigned int
[5] Mon Dec 3 00:15:00 2018 5
key Mon Dec 3 00:15:00 2018 QDateTime
value 5 unsigned int
[6] Mon Dec 3 00:30:00 2018 6
key Mon Dec 3 00:30:00 2018 QDateTime
value 6 unsigned int
[7] Mon Dec 3 00:45:00 2018 7
key Mon Dec 3 00:45:00 2018 QDateTime
value 7 unsigned int
[8] Mon Dec 3 01:00:00 2018 8
key Mon Dec 3 01:00:00 2018 QDateTime
value 8 unsigned int
[9] Mon Dec 3 01:15:00 2018 9
key Mon Dec 3 01:15:00 2018 QDateTime
value 9 unsigned int
[10] Mon Dec 3 01:30:00 2018 10
key Mon Dec 3 01:30:00 2018 QDateTime
value 10 unsigned int
[11] Mon Dec 3 01:45:00 2018 11
key Mon Dec 3 01:45:00 2018 QDateTime
value 11 unsigned int
[12] Mon Dec 3 02:00:00 2018 12
key Mon Dec 3 02:00:00 2018 QDateTime
value 12 unsigned int
[13] Mon Dec 3 02:15:00 2018 13
key Mon Dec 3 02:15:00 2018 QDateTime
value 13 unsigned int
[14] Mon Dec 3 02:30:00 2018 14
key Mon Dec 3 02:30:00 2018 QDateTime
value 14 unsigned int
[15] Mon Dec 3 02:45:00 2018 15
key Mon Dec 3 02:45:00 2018 QDateTime
value 15 unsigned int
[16] Mon Dec 3 03:00:00 2018 16
key Mon Dec 3 03:00:00 2018 QDateTime
value 16 unsigned int
[17] Mon Dec 3 03:15:00 2018 17
key Mon Dec 3 03:15:00 2018 QDateTime
value 17 unsigned int
[18] Mon Dec 3 03:30:00 2018 18
key Mon Dec 3 03:30:00 2018 QDateTime
value 18 unsigned int
[19] Mon Dec 3 03:45:00 2018 19
key Mon Dec 3 03:45:00 2018 QDateTime
value 19 unsigned int
[20] Mon Dec 3 04:00:00 2018 20
key Mon Dec 3 04:00:00 2018 QDateTime
value 20 unsigned int
....
Now, when I try to get the value which is associated with the key of "Sun Dec 2 23:00:00 2018", the code is returning me 14! but the correct value should be 0 clearly (based on the map values). This is the code I've used:
quint32 mapValue = dateTime.value(date); // date is "Sun Dec 2 23:00:00 2018"
I'm coding qt for more than 8 years (but mostly Qt5) and this seems really strange. Maybe it's not correct way to define a map or maybe it's a Qt4.8 bug. I'll appreciate for any help. Thanks.
Edit: After debugging, I've found that the value associated with key#14 is equal with value associated with key#0 according to debugging information! Check out this:
In above image two values are detected equal.
Just found the issue. It was due to dateTime specs. Some of them had different specs