Finally, I got chance to read his book, and below are things I learnt this time.

• All rely on Ajax not good; not to send all data to client using Ajax (need django template list)
• Split one javascript into two, one required before onLoad, the other delay loading and processing
• old Google Analytics uses document.write Script Tag to asynchronically load javascript, which was blocking the subsequence DOM loading; now, it uses Script DOM Element
• fast inline script execute by setTimeout(init, 0), slow inline script execute by onLoad
• inline script should before CSS, or after all other resources
• any global javascript variable used more than twice should define a local variable; any javascript object property used more than twice should define a local variable
• in javascript for loop, -- is faster than ++
• simultaneously request more than 2 resources from the same domain will introduce request competetion
• css selector: ID > class > type > adjacent > child > descendant > universal

KEEP LEARNING EVERYDAY

© 2012 Endogenous - CaiLog. blogged by cail.cn - 35cd076bdd09fcbdfe7ca24eb8f93900

The error I had is to send POST requests to douban

Signature does not match. Expected: xxxx

All the GET requests are working (obviously my tokens are correct), but not POST.

All search results are suggesting that douban doesn't implant the correct OAuth 1.0, but that's not the case!
There is one sentence in the manual

进行POST、PUT、DELETE请求时，豆瓣暂时不支持使用在url中或者post form中传递OAuth参数。因此你只能选择在header中传递OAuth参数。

It does emphasize to put authorization code in the header, but also indicates that douban doesn't support form

'Content-Type': 'application/x-www-form-urlencoded'

which is a default in python oauth2 library

The fix is easy, just indicate the Content-Type. There is no need to tweak the oauth2, nor to try to match it suggested basestring (that was what I did and was completely a waste of time, because I made perfect match basestring, but still no luck). Until...

headers = request.to_header()
headers['Content-Type'] = 'application/atom+xml; charset=utf-8'

© 2012 Endogenous - CaiLog. blogged by cail.cn - 35cd076bdd09fcbdfe7ca24eb8f93900

IT CAN BE DONE!

1. Add your gmail account as a GMAIL account in iPhone which will enable the mail and calendar syncing

2. Again, second time, add your gmail account into iPhone, but as an EXCHANGE account, with m.google.com as server, empty domain, full email address as user name, and disable mail and calendar. Google's exchange will sync the contact to your phone! WOW Why not use exchange to handle all three? As stated in the original discussion

From what I understand, using Exchange to sync gmail and calendar is battery inefficient compared to using the Gmail account type. So, that's why I think it's better to use the two different account types. Otherwise, one could just use the Exchange account type and not mess with the Gmail account type. Feel free to correct me if I'm wrong on any of that!

There is one drawback. What you will find in your iPhone contact is that there are two groups, one from iCloud, which is a mirror of things in Mac Address Book; the other from Google. If view them all, you will see many duplicates. Oh well, at least have to stay that way for now...

© 2012 Endogenous - CaiLog. blogged by cail.cn - 35cd076bdd09fcbdfe7ca24eb8f93900

var xdr = new XDomainRequest();
if (xdr) {
  xdr.open('get', url);
  xdr.onload = function () {
    var xml = $.parseXML(xdr.responseText);
    do_something_with(xml);
  };
  xdr.onerror = function () { alert('bug in IE: fail to load'); }
  xdr.ontimeout = function () { alert('bug in IE: time out'); }
  xdr.send();
} else {
  alert('bug in IE: fail to start');
}

© 2012 Endogenous - CaiLog. blogged by cail.cn - 35cd076bdd09fcbdfe7ca24eb8f93900

If you just want to port, the middle phone number is what you need.
1 866 802 7560 - people over the line was very helpful!

© 2012 Endogenous - CaiLog. blogged by cail.cn - 35cd076bdd09fcbdfe7ca24eb8f93900

Although my migration attempt cross different regions failed,
I successfully shrink the os volume from 8G to 4G. Here is how:

1. snapshot the running os volume
2. create a new volume use the snapshot, and attach to /dev/big
3. create an empty volume with smaller size, and attach to /dev/small
4. operate on the big volume

   e2fsck -f /dev/big
   
   resize2fs -M -p /dev/big
   # the command above shrink the volume

5. mirror the content from the big to the small volume

   dd if=/dev/big ibs=16M of=/dev/small obs=16M count=128
   # count needs to be adjusted; mine was 415315 4k block, which was about 101 16M block
   
   resize2fs -p /dev/small
   # the command above expand the volume to full space
   
   e2fsck -f /dev/small

6. stop the running instance, replace the os volume with the small and all set

© 2012 Endogenous - CaiLog. blogged by cail.cn - 35cd076bdd09fcbdfe7ca24eb8f93900

While I was updating "the Paper Link" for it to adapt to a more social way for reading biomedical paper, I had the following error

{"error":{"message":"(#15) This method must be called with an app access_token.","type":"OAuthException"}}

Google and search Stackoverfolow didn't help. The issues listed are all about failure in OAuth. I know my oauth2 is working, since I can still post to the WALL. And, it was working until I started tweaking Web App setting at developers.facebook.com

...

Finally, I got the reason. One checkbox! Use User Token, but not App Token. I regret I didn't read those [?] help carefully. Oh well~~

Requires App Token to Publish:
Most action types should use a user token. Use and distribute the app token sparingly.

© 2012 Endogenous - CaiLog. blogged by cail.cn - 35cd076bdd09fcbdfe7ca24eb8f93900