iOS frame change one property (eg width)

Question

This question was originally asked for the objective-c programming language. At the time of writing, swift didn\'t even exist yet.

Question

Is it po

Answer 1

frequently call setFrame method is not so good, like: setFrameX(x) setFrameY(y) setFrameWidth(width) ...

instead, in swift we can make use of default parameters to set multiple parameters only in one call:

func setFrame(x x: CGFloat = CGFloat.NaN, y: CGFloat = CGFloat.NaN, width: CGFloat = CGFloat.NaN, height: CGFloat = CGFloat.NaN) {
    let newX = x.isNaN ? self.frame.origin.x : x
    let newY = y.isNaN ? self.frame.origin.y : y
    let newWidth = width.isNaN ? self.bounds.size.width : width
    let newHeight = height.isNaN ? self.bounds.size.height : height

    self.frame = CGRect(x: newX, y: newY, width: newWidth, height: newHeight)
}

then update parameters of frame only need:

setFrame(x: x, width: min(maxX - x, titleLabel.bounds.size.width))
setFrame(width: titleDescriptionLabel.bounds.size.width + 5, height: titleDescriptionLabel.bounds.size.height + 6)