過自己想過的生活

原文：http://stackoverflow.com/questions/16633555/how-to-convert-qstring-to-int

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QString Abcd="123.5 Kb"

Abcd.split(" ")[0].toInt()//convert the first part to Int

Abcd.split(" ")[0].toDouble()//convert the first part to double

Abcd.split(" ")[0].toFloat()//convert the first part to double