vinodkd

Programming Achievements: How to Level Up as a Developer

This gist is part of a blog post. Check it out at:

http://jasonrudolph.com/blog/2011/08/09/programming-achievements-how-to-level-up-as-a-developer

vinodkd

    /**
     * If applicable, deducts the rewards amount from the current price, 
     * rewards points on the booking and returns the charge amount for the user's card.
     */
    public CCAmt doRewards(String pos, CCAmt currentCCAmt,
                                           rewardsInfo rewardsInfo,
                                           String PNR,
                                           XFactor xFactor,
                                           boolean isSpecialInventory,
                                           Money sellRateForSpecialInventory

vinodkd

stmt can have id, comment and fact attached
function can have same, but is a collection of stmts
program can have same, but is a collection of functions

built into the language def is a list creator
also built in is a hierarchical fact analyzer, ie, all facts 
presented at a collection level are taken to represent reality 
at that level. higher levels areexpected to have a "higher" understanding and therefore not applicable; similarly lower

list-of(XXX)	:= <list containing objects of type XXX>

vinodkd

ometa JackParser {
	id = string,
	comment = string,
	fact = string,
	name = string,
	
	operator = name,
	arg = name | expr,

	header = [id:id comment:comment fact:fact] -> { id:id, comment:comment, fact:fact},

vinodkd

// yaml version of the same
- object: function
  id: 
  comment: 
  fact: 'multiplies(x,y)'
  name: multipliesTwo
  expr:
	- object: expr
	  id: 
	  comment: 

vinodkd

  public static int maxProd(int[] input){
    int max1 = max2 = max3 = java.lang.Integer.MIN_VALUE;
    int min1 = min2 java.lang.Integer.MAX_VALUE;
    for(int i=0; i<input.length;i++){
      
      // recalc the new max3 numbers
      int val= input[i];
      if(val > max1){
        max2 = max1;  // dont lose the old max1
        max1=val;

vinodkd

  public static int maxProd(int[] input){
    int max1 = max2 = max3 = java.lang.Integer.MIN_VALUE;
    int min1 = min2 java.lang.Integer.MAX_VALUE;
    for(int i=0; i<input.length;i++){
      

      int val= input[i];
      range calcmax{
        if(val > max1){
          max2 = max1;  // dont lose the old max1

vinodkd

Object.metaClass.of = { delegate[0](delegate[1](it))}
Object.metaClass.the = { clos -> [delegate[0], clos]}

show = [ {println it} ]
square_root = { Math.sqrt(it) }
please = {it}

please show the square_root of 100

vinodkd

//try1
println please.class.name
println please.delegate

println show
println show.class.name
println show.delegate

println please(show).delegate
println please(show).the(square_root)

vinodkd

please(show).the(square_root).of(100)
={it}([{println it}]).{clos -> [delegate[0],clos]}(square_root).{delegate[0](delegate[1](it))}(100)
=[{println it}].[delagate[0], square_root].[delegate[0](delegate[1](100))]
= [{println it}, square_root].[delegate[0](delegate[1](100))]
=println(square_root(100))