kqueue

Thanks. The FB design influence was intentional because of the reason you mentioned. The groups are private for now I am planning to make that optional.

groups.io is a project I made in my free time to create permanent private group chat with an easy way to share files, links, albums.

I'd appreciate your feedback.

yeah that title will get you a lot of traffic

Hong Kong is small country which makes it faster / cheaper to adopt new technologies compared to adopting it in 50 states where some states are magnitude bigger than Hong Kong.

C 101.. HN is becoming sillier every day.

Have HN inform the user that the link has been submitted before.

if x is unsigned, then:

(x & (x - 1)) == 0

I think this article was written to drive traffic only. The author is comparing apples and oranges and he knows it.

That's definitely interesting.

~$python -mtimeit "'a' + 'b' + 'c' + 'd'"

10000000 loops, best of 3: 0.026 usec per loop

~$python -mtimeit "''.join(('a','b','c','d'))"

10000000 loops, best of 3: 0.197 usec per loop

When the kernel takes control the MMU gets involved to update the memory mapping.

just a hypothesis. accept() triggers a context switch. Context switches involves MMU commands, and can be slower in xen if it is being emulated in software (type2 hypervisor). This is much slower than a native OS doing a context switch and the MMU operations are executed at the CPU level.

53 submissions in 4 days?

http://news.ycombinator.com/submitted?id=jemeshsu

twitter xAuth is not secure. Why do you want me to hand over my username/password to a third party service?

milliseconds is pretty readable. What's not readable is "9.7" and 100 because I am not sure if that's in seconds, milliseconds unless I know the default.

How's it different than http://seleniumhq.org/ ?

Who said that sitemap.xml is always in that location? If it is not specified in robots.txt then they don't want you to know about it in case it exists.

Of course I did. But you weren't reaching a wide audience positing it on a Friday afternoon.

I am sure you'll get enough suggestions on technical books so I won't bother suggesting one. But make sure to pay extra attention to communication. A huge part in software engineering is communication.

IMHO Friday afternnon is not the most effective time to announce a startup

Oops, my bad.

I don't think this is webkit specific. Chrome uses a different JS engine than other webkit based browsers.

It's interesting to see an 8 hours post that has 374 points, and 156 comments on the second page instead of being on the first page.

On a related note

http://academicearth.org/courses/machine-learning

python> 'a' * 16000

copy that to hashify, and let me know the length of the url you get.

This is going to break in cases where the request line grows above 8k-16k. Many browsers/proxies implement limits on headers/request lines, for good reasons.

It's a very cool idea though.

Why are you posting this?

+1. I learn the most from reinventing wheels. And I reinvent them on purpose.

Most of the articles are copied from somewhere else.

http://www.insideword.com/member/profile/31 ->

http://articles.timesofindia.indiatimes.com/2011-04-04/compu...

Solving the original content problem is a must.

Traceback (most recent call last):

  File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/__init__.py", line 634, in __call__
    handler.get(*groups)

  File "/base/data/home/apps/gumroad/1.349472656690944858/main.py", line 60, in get
    if is_logged_in():

  File "/base/data/home/apps/gumroad/1.349472656690944858/main.py", line 110, in is_logged_in
    s = sessions.Session()

  File "/base/data/home/apps/gumroad/1.349472656690944858/appengine_utilities/sessions.py", line 562, in __init__
    self.session = _AppEngineUtilities_Session.get_session(self)

  File "/base/data/home/apps/gumroad/1.349472656690944858/appengine_utilities/sessions.py", line 142, in get_session
    ds_session = db.get(str(session_key))

  File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 1422, in get
    keys, multiple = datastore.NormalizeAndTypeCheckKeys(keys)

  File "/base/python_runtime/python_lib/versions/1/google/appengine/api/datastore.py", line 180, in NormalizeAndTypeCheckKeys
    keys = [_GetCompleteKeyOrError(key) for key in keys]

  File "/base/python_runtime/python_lib/versions/1/google/appengine/api/datastore.py", line 2339, in _GetCompleteKeyOrError
    key = Key(arg)

  File "/base/python_runtime/python_lib/versions/1/google/appengine/api/datastore_types.py", line 364, in __init__
    raise datastore_errors.BadKeyError('Invalid string key %s.' % encoded)

BadKeyError: Invalid string key agdndW1yb2FkciMLEhtfQXBwRW5naW5lVXRpbGl0aWVzX1Nlc3Npb24Y.