Adam Stallard adamstallard

## OnchainMedianVote.md

      
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                adamstallard
                / OnchainMedianVote.md
            
            
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              December 19, 2024 15:52
            
              
                Keeping a running median vote on chain
              
          
    Background

https://en.wikipedia.org/wiki/Median_mechanism
Technique

Keep a min heap and a max heap in two solidity arrays.
If a new vote is greater than root of the min heap, insert it there, otherwise insert it in the max heap.

  
## client.js
const CryptoJS = require("crypto-js");
const nacl = require("tweetnacl");
const B64 = require("base64-js");
const { create } = require("apisauce");
const assert = require("assert");
const qrcode = require("qrcode-terminal");

const baseURL = "http://test.brightid.org/profile";
const api = create({
  baseURL,

## attr-string-template-pre.xhtml
<?xml version='1.0' encoding='UTF-8'?>
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <include>myImage</include>
  </head>
  <body>
    <myImage>
      <base>..</base>
    </myImage>
  </body>

## gist:3873928
// adapted from: http://blog.zachwaugh.com/post/309927273/programmatically-retrieving-ip-address-of-iphone
- (NSString *)getIPAddress {
    Boolean result;
    CFHostRef hostRef;
    CFArrayRef addresses;
    NSString *hostname = @"domain.myhost.com";
    NSString *ipAddress = @"";

    hostRef = CFHostCreateWithName(kCFAllocatorDefault, (CFStringRef)hostname);
    if (hostRef) {

## gist:2044589
1) Create a branch with the tag
	git branch {tagname}-branch {tagname}
	git checkout {tagname}-branch

2) Include the fix manually if it's just a change ....
	git add .
	git ci -m "Fix included"
    or cherry-pick the commit, whatever is easier
	git cherry-pick  {num_commit}
	const CryptoJS = require("crypto-js");
	const nacl = require("tweetnacl");
	const B64 = require("base64-js");
	const { create } = require("apisauce");
	const assert = require("assert");
	const qrcode = require("qrcode-terminal");

	const baseURL = "http://test.brightid.org/profile";
	const api = create({
	baseURL,
	<?xml version='1.0' encoding='UTF-8'?>
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<include>myImage</include>
	</head>
	<body>
	<myImage>
	<base>..</base>
	</myImage>
	</body>
	// adapted from: http://blog.zachwaugh.com/post/309927273/programmatically-retrieving-ip-address-of-iphone
	- (NSString *)getIPAddress {
	Boolean result;
	CFHostRef hostRef;
	CFArrayRef addresses;
	NSString *hostname = @"domain.myhost.com";
	NSString *ipAddress = @"";

	hostRef = CFHostCreateWithName(kCFAllocatorDefault, (CFStringRef)hostname);
	if (hostRef) {
	1) Create a branch with the tag
	git branch {tagname}-branch {tagname}
	git checkout {tagname}-branch

	2) Include the fix manually if it's just a change ....
	git add .
	git ci -m "Fix included"
	or cherry-pick the commit, whatever is easier
	git cherry-pick {num_commit}