Give the next widget an explicit key, for items in a list whose order changes. Without it a widget in a loop is identified by its position in the loop.
- value: anything that identifies the item and stays the same as the list changes.
Item :: struct { id: int; name: string; }
items := Item.[.{ 7, "seven" }, .{ 9, "nine" }];
ui := headless();
defer free_ui(*ui);
frame(*ui, *items, (list: *[2] Item) {
for column() {
for list.* {
key(it.id);
label(it.name);
}
}
});
assert(find_label(*ui, "nine") != null);key :: (value: $T)Give the next widget an explicit key, for items in a list whose order changes. Without it a widget in a loop is identified by its position in the loop.
Parameters
- value: $T
- anything that identifies the item and stays the same as the list changes.
Item :: struct { id: int; name: string; }
items := Item.[.{ 7, "seven" }, .{ 9, "nine" }];
ui := headless();
defer free_ui(*ui);
frame(*ui, *items, (list: *[2] Item) {
for column() {
for list.* {
key(it.id);
label(it.name);
}
}
});
assert(find_label(*ui, "nine") != null);