Contents

constraint(equalTo:multiplier:constant:)

Returns a constraint that defines the anchor’s size attribute as equal to the specified size attribute multiplied by a constant plus an offset.

Declaration

func constraint(equalTo anchor: NSLayoutDimension, multiplier m: CGFloat, constant c: CGFloat) -> NSLayoutConstraint

Parameters

  • anchor:

    A dimension anchor from an Nsview or Nslayoutguide object.

  • m:

    The multiplier constant for the constraint.

  • c:

    The offset constant for this relationship.

Return Value

An NSLayoutConstraint object that defines the attribute represented by this layout anchor as equal to the attribute represented by the anchor parameter multiplied by the m constant plus the constant c.

Discussion

This method defines the relationship first attribute = (m * second attribute) + c. Where first attribute is the layout attribute represented by the anchor receiving this method call, and second attribute is the layout attribute represented by the anchor parameter.

The constraints produced by the following two examples are identical.

See Also

Building constraints