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Keybase proof

I hereby claim:

• I am leoapost on github.
• I am leoapost (https://keybase.io/leoapost) on keybase.
• I have a public key ASBFgeJ-mTYXWeN0X_zipwe51YhNfpPdlaCBOHX0zFPdCwo

To claim this, I am signing this object:

leoapost

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

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Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

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Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

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Business Models

Advertising

Models	Examples
Display ads	Yahoo!
Search ads	Google

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The introduction to Reactive Programming you've been missing

(by @andrestaltz)

So you're curious in learning this new thing called (Functional) Reactive Programming (FRP).

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

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Sublime Text 2 - Useful Shortcuts

Tested in Mac OS X: super == command

Open/Goto

---

• super+t: go to file
• super+ctrl+p: go to project
• super+r: go to methods

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# Replace REMOTE_NAME with your remote name (e.g. origin)

git branch -r | grep REMOTE_NAME/ | grep -v 'master$' | grep -v HEAD| cut -d/ -f2 | while read line; do git push REMOTE_NAME :$line; done;

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# Replace AUTHOR_NAME with the author's name
# Replace KEYWORD with the keyword you wanna find

for x in $(git log --author=AUTHOR_NAME --pretty=format:'%h' -n 20 | cut -d" " -f1) ; do for y in $(git show --pretty="format:" --name-only $x) ; do if [ -f $y ]; then echo $y ; grep -in 'KEYWORD' $y ; fi ; done ;  done

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# Replace KEYWORD with the keyword you wanna find
# Replace COMMIT_HASH with the actual hash (e.g. 2005b934aaad9b481f8966e618dabfc143ab8357)

for x in $(git show --pretty="format:" --name-only COMMIT_HASH) ; do if [ -f $x ]; then echo $x ; grep -in 'KEYWORD' $x ; fi ; done