Constraint shortcuts

NSLayoutAnchor+Shortcuts.swift

extension NSLayoutAnchor {
    @objc @discardableResult func eq(_ anchor: NSLayoutAnchor, _ constant: CGFloat = 0.0) -> NSLayoutConstraint {
        let c = constraint(equalTo: anchor, constant: constant)
        c.isActive = true
        return c
    }
    
    @objc @discardableResult func lte(_ anchor: NSLayoutAnchor, _ constant: CGFloat = 0.0) -> NSLayoutConstraint {
        let c = constraint(lessThanOrEqualTo: anchor, constant: constant)
        c.isActive = true
        return c
    }
    
    @objc @discardableResult func gte(_ anchor: NSLayoutAnchor, _ constant: CGFloat = 0.0) -> NSLayoutConstraint {
        let c = constraint(greaterThanOrEqualTo: anchor, constant: constant)
        c.isActive = true
        return c
    }
 }