Qt学习 第31节：信号和槽出现函数重载

https://doc.qt.io/qt-5/signalsandslots-syntaxes.html#https://doc.qt.io/qt-5/signalsandslots-syntaxes.html#
Selecting Overloaded Signals and Slots
With the string-based syntax, parameter types are explicitly specified. As a result, the desired instance of an overloaded signal or slot is unambiguous.
In contrast, with the functor-based syntax, an overloaded signal or slot must be casted to tell the compiler which instance to use.
For example, QLCDNumber has three versions

Qt学习 第31节：信号和槽出现函数重载最先出现在Python成神之路。