Insert data into QHash inside QHash

[t0msk]

Hello this is how I declared variable of QHash:

QHash<QString, QHash<QString, QString>> data

As you can see I want to have QHash inside QHash, because I would like to have one variable which holds some sections like args, settings etc.. and some keys with values so I tried to insert some data into that variable like:

data.insert("args", "test", "123");
data.insert("args", "test2", "12345");
data.insert("settings", "key", "123456");

But I got:

error: no matching function for call to 'QHash<QString, QHash<QString, QString> >

I understand that my insert is wrong because I insert 3x QString but I have to insert 1x QString and 1x QHash which contains that others 2x QStrings, but I don't know how can I do it, I don't know syntax. So I would be happy if someone helps me.

[mrjj]

Hi
One way would be

  using MyHash = QHash<QString, QString> ; // to raise readability 
  QHash<QString, MyHash> data;
  MyHash h1;
  h1.insert("key", "value");
  h1.insert("key2", "value3");  
  data.insert("args", h1);

There might be a fancier syntax but i like this for simplicity :)

If you want a predefined list, you can also do

QHash<QString, QHash<QString, QString>> LookupList {
    {"A", {{ "....", "..."}}},
    {"b", {{ "...", "..."}}},
    {"x", {{ "...", "..."}}},
  };

You can of course still insert items at runtime.

[t0msk]

@mrjj If I use predefined list then how can I insert items at runtime? Like in first method:

MyHash h1;
h1.insert("key", "value");
h1.insert("key2", "value3");   
data.insert("args", h1);

?

[aha_1980]

@t0msk sure, but why don't you just try it? ;)

[mrjj]

@t0msk
yes. same way.
its 100% the same as first, except there will be already values in it on run.

[t0msk]

@mrjj Thank you :)

@aha_1980 Yea.. :) but there could be another way :D