检查QByteArray的十六进制表示形式

Question

How does one check for specific values in a QByteArray?

Something like this:

QByteArray example;
//...
example = file.readAll();//fill with data from a file
//...
if(example.mid(0, 2) == 0x0a00)
    //do something

The above doesn't work.

I CAN do this but I am currently fixing performance issues so I'd rather not have to convert it to a QString:

QByteArray example;
//...
example = file.readAll();//fill with data from a file
//...
if(example.mid(0, 2).toHex() == "0a00")
    //do something

What's the fastest way to check the bytes in a QByteArray based on their hex representation?

Answer 1

You can compare simply like this.

if(example.mid(0, 2) == "\\x0a\\x00")

Edited: This is not working. Check below comment.