dannycabrera

CGContext context = UIGraphics.GetCurrentContext ();
context.InterpolationQuality = CGInterpolationQuality.None;


context.TranslateCTM (0, newSize.Height);
context.ScaleCTM (1f, -1f);

context.DrawImage (new RectangleF (0, 0, newSize.Width, newSize.Height), source.CGImage);

var scaledImage = UIGraphics.GetImageFromCurrentImageContext();

rweald

class SimpleLinearRegression
  def initialize(xs, ys)
    @xs, @ys = xs, ys
    if @xs.length != @ys.length
      raise "Unbalanced data. xs need to be same length as ys"
    end
  end

  def y_intercept
    mean(@ys) - (slope * mean(@xs))

rstacruz

Rails Models

Generating models

$ rails g model User

Associations

belongs_to

has_one