title: swift Invalid Redeclaration
body: <pre><code>func dropShape() {
          if let shape = fallingShape {
              while detectIllegalPlacement() == false {
                  shape.lowerShapeByOneRow()
              }
              shape.raiseShapeByOneRow()
              delegate?.gameShapeDidDrop(self)
          }
      }
  </code></pre>
  
  <p>Hi, I'm taking this Invalid redeclaration of 'dropShape()' so what did I wrong. Can anybody help me</p>