Skipping indices with a repeater - qt

Question

How do I skip the indices in a repeater such that I can create the following exact string: A • D • G • J • M • P • S • V • Z Is this achievable?
My new code based on suggested answers, I created a function newLetters(index) to determine which letters to print and now my output gives the following string: A •• D •• G •• J •• M •• P •• S •• V •• Z?
import QtQuick 2.15
import QtQuick.Window 2.15
Window {
id: root
visible: true
width: 640
height: 480
title: qsTr("Hello World")
property string letters: "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
Rectangle {
id: control
anchors.fill: parent
function newLetters(index) {
if(letters[index] === "A")
return true
if(letters[index] === "D")
return true
if(letters[index] === "G")
return true
if(letters[index] === "J")
return true
if(letters[index] === "M")
return true
if(letters[index] === "P")
return true
if(letters[index] === "S")
return true
if(letters[index] === "V")
return true
if(letters[index] === "Z")
return true
}
Repeater {
anchors.fill: parent
model: 26
Text {
text: control.newLetters(index) ? root.letters[index] : " • "
}
}
}
}

Answer 1

You could use a Loader as delegate.
Repeater {
id: repeater
model: 26
Loader {
sourceComponent: condition(index) ? defaultDelegate : null
}
}
here condition should be a function that returns true for the indices you want to show, and defaultDelegate is the delegate you want to show for for those indices.
Another way is to just hide the text element.
Repeater {
anchors.fill: parent
model: 26
Text {
visible: condition(index)
text: root.letters[index]
}
}