Nested QMap with a QHash and fetching values inside the QHash?

[Calicoder]

Howdy folks, hope your 2022 is going well so far. Another day trying to train myself on C++ and QT. I've been playing around with containers and noticed something odd with using QMaps. I can only fetch the outer most keys and never anything inside that.
For example, say I have this setup of a customer ID dataset:

QMap(("customerIdData", QVariant(QVariantHash, QHash(("Mike", QVariant(double, 0439.7))))))

Using the QMap.value("customerIdData") works well but this QMap.value("Mike") only shows the default 0 value. Is this possible to access that inner QHash double value?

Appreciate the help as always.

[Christian Ehrlicher]

Please provide some real code on how you fill and later try to read your structure.

[SGaist]

Hi,

Beside the code, you shall start by doing it in steps:

• Get the variant from the map
• Convert the variant to a hash
• Extract the value you want from the hash

[Calicoder]

@SGaist said in Nested QMap with a QHash and fetching values inside the QHash?:

Hi,

Beside the code, you shall start by doing it in steps:

• Get the variant from the map
• Convert the variant to a hash
• Extract the value you want from the hash

Perfect, thanks guys! This worked

QMap.first().toHash().value("Mike").toDouble()