How to remove the first two characters of a QString

Question

How would I remove the the first two characters of a QString or if I have to put it a StackOverflows layman's terms:

QString str = "##Name" //output: ##Name

to

output: Name

So far I have used this small piece of code:

if(str.contains("##"))
{
    str.replace("##","");
}

..but it doesn't work as I would need to have "##" in some other strings, but not at the beginning.

The first two characters may occur to be "%$" and "#@" as well and that mostly the reason why I need to delete the first two characters.

Any ideas?

str.remove(0,2) ? I never used Qt, but the documentation on QString looks like... very complete. — Timbo, Mar 07 '17 at 13:35

score 23 · Accepted Answer · edited Nov 08 '18 at 10:40

23

This the syntax to remove the two first characters.

str.remove(0, 2);

edited Nov 08 '18 at 10:40

Kenly

answered Mar 07 '17 at 13:35

Amd Dmb

score 14 · Answer 2 · answered Mar 07 '17 at 13:35

14

You can use the QString::mid function for this:

QString trimmed = str.mid(2);

But if you wish to modify the string in place, you would be better off using QString::remove as others have suggested.

answered Mar 07 '17 at 13:35

paddy

score 4 · Answer 3 · answered Mar 07 '17 at 13:42

4

Removes every occurrence of the regular expression rx in the string, and returns a reference to the string. For example:

QString str = "##Name" //output: ##Name
    str.remove(QRegExp("[#]."));
    //strr == "Name"

answered Mar 07 '17 at 13:42

Rahim

This is not the best answer for the question but it solved my problem: I wanted to remove all occurence of a given character. – Martin Delille Nov 30 '18 at 23:04

3 Answers3