column method Null safety
- int x
Returns the list of RenderBox objects that are in the given
column, in row order, starting from the first row.
This is a lazily-evaluated iterable.
Implementation
// The following uses sync* because it is public API documented to return a
// lazy iterable.
Iterable<RenderBox> column(int x) sync* {
for (int y = 0; y < rows; y += 1) {
final int xy = x + y * columns;
final RenderBox? child = _children[xy];
if (child != null) {
yield child;
}
}
}