iamakimmer

#newton-raphson for sq root
def newton(square):
  guess = square/2.0
  attempts = 0
  # f(x) = x**2 - square
  # then f'(x) = 2x
  while abs(guess*guess) - square >= .001:
    # print guess
    attempts+=1
    guess = guess - ((guess**2 - square)/(2*guess))

iamakimmer

public class QuickFindWeighted
{
  private int[] arr; //the nodes 
  private int[] size; //the levels on the graph

  public QuickFindWeighted(int n) {
    arr = new int[n];
    size = new int[n];
    for (int i=0;i<n;i++) {
      arr[i] = i;

iamakimmer

mongod --replSet rs1 --logpath "1.log" --dbpath /data/rs1 --port 27017 --fork
mongod --replSet rs2 --logpath "2.log" --dbpath /data/rs1 --port 27018 --fork
mongod --replSet rs3 --logpath "3.log" --dbpath /data/rs1 --port 27019 --fork

iamakimmer

  def  index
    @products = Product.includes(:user).all
    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @products }
      format.xml  { render xml: @products }
    end
  end
  

iamakimmer

<!-- Enable annotation scanning. --> 
<context:component-scan base-package="com.matthewjkim.controllers" />
<!-- Map objects to XML. --> 
<bean id="xstreamMarshaller" class="org.springframework.oxm.xstream.XStreamMarshaller" /> 
<bean id="xmlMessageConverter" class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter"> 
  <constructor-arg ref="xstreamMarshaller" /> 
</bean> 
<bean id="jsonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
<!-- Bind the return value of the Rest service to the ResponseBody. -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

iamakimmer

options = [{property: “name", variants: [A,B,C]}, {property: “size", variants: [1,2,3]} ,{property: “color", variants: [Blue,Green]}]



3x3x2 = 18 combinations

A-1-Blue
A-1-Green
A-2-Blue
A-2-Green

iamakimmer

document.mynumberlist[0] = 2;
document.save();

iamakimmer

document.mynumberlist[0] = 2;
document.markModified('mynumberlist'); //notify mongoose of the change
document.save();

iamakimmer

document.mynumberlist.set(0, 2);
document.save();

iamakimmer

   // will not save updated date
  doc.eventDate.setDay(10);
  doc.save();
  
  // will save updated date
  doc.eventDate.setDay(10);
  doc.markModified('eventDate');
  doc.save();