QString contains function
purpose
Originally I wanted to do a fuzzy query. The data is a QMap collection of key value. If you want to query whether a key is included in the Qmap collection, you can directly return bool to map.contains(key) to know, but if you want to do a fuzzy check, just Can't be used anymore.
Ideas
If you need fuzzy query, you need to make a judgment for each key, and then store the included keys
achieve
interface
Create a simple interface