lineEdit.clear() & lineEdit.setText('') Query
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Dear All,
I have small question gentlemen, if I need to clear the fields in "lineEdit" I have used two methods, either by using "lineEdit.clear()" or "lineEdit.setText('')", both of them does clear the fields. The question is what is the difference between them?Many thanks,
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Hi,
Using clear in your code base makes the intent more understandable.
And you can use it with signal and slots directly.
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Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct -
Hi,
Using clear in your code base makes the intent more understandable.
And you can use it with signal and slots directly.
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To add to what @SGaist said keep in mind that
lineEdit.setText("")will construct a temporaryQStringand this means allocating memory, copying the data from the string literal (the single null terminator in this case), and copying that string into the line edit. A lot of very unnecessary work for clearing. -
To add to what @SGaist said keep in mind that
lineEdit.setText("")will construct a temporaryQStringand this means allocating memory, copying the data from the string literal (the single null terminator in this case), and copying that string into the line edit. A lot of very unnecessary work for clearing.@Chris-Kawa Many thanks, so to use the clear() function it would be better than setText().
