From 83acbbbb15a4c551d4a9b7a63ef15721ce5008d4 Mon Sep 17 00:00:00 2001
From: Manuel Araoz <manuelaraoz@gmail.com>
Date: Thu, 11 Aug 2016 13:02:32 -0300
Subject: [PATCH] Array usage examples

---
 contracts/BadArrayUse.sol        | 12 +++++++++---
 contracts/GoodArrayUse.sol       | 18 ++++++++++++++----
 migrations/2_deploy_contracts.js |  1 +
 3 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/contracts/BadArrayUse.sol b/contracts/BadArrayUse.sol
index e278ea3a5..b019bb173 100644
--- a/contracts/BadArrayUse.sol
+++ b/contracts/BadArrayUse.sol
@@ -5,10 +5,16 @@ import './PullPaymentCapable.sol';
 contract BadArrayUse is PullPaymentCapable {
   address[] employees;
 
-  function payroll() {
+  function payBonus() {
     for (var i = 0; i < employees.length; i++) {
-      
+			address employee = employees[i];
+			uint bonus = calculateBonus(employee);
+    	asyncSend(employee, bonus);
     }
-      
   }
+
+	function calculateBonus(address employee) returns (uint) {
+    // some expensive computation...
+  }
+
 }
diff --git a/contracts/GoodArrayUse.sol b/contracts/GoodArrayUse.sol
index abac54195..f0693f35a 100644
--- a/contracts/GoodArrayUse.sol
+++ b/contracts/GoodArrayUse.sol
@@ -1,11 +1,21 @@
+import './PullPaymentCapable.sol';
 
-contract GoodArrayUse {
+contract GoodArrayUse is PullPaymentCapable {
   address[] employees;
+  mapping(address => uint) bonuses;
 
-  function payroll() {
+  function payBonus() {
     for (uint i = 0; i < employees.length; i++) {
-      
+			address employee = employees[i];
+			uint bonus = bonuses[employee];
+    	asyncSend(employee, bonus);
     }
-      
   }
+
+	function calculateBonus(address employee) returns (uint) {
+    uint bonus = 0;
+    // some expensive computation...
+    bonuses[employee] = bonus;
+  }
+
 }
diff --git a/migrations/2_deploy_contracts.js b/migrations/2_deploy_contracts.js
index 0d1c9266d..02476c063 100644
--- a/migrations/2_deploy_contracts.js
+++ b/migrations/2_deploy_contracts.js
@@ -2,4 +2,5 @@ module.exports = function(deployer) {
   deployer.deploy(BadFailEarly);
   deployer.deploy(GoodFailEarly);
   deployer.deploy(PullPaymentBid);
+  deployer.deploy(BadArrayUse);
 };