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@jboner
jboner / latency.txt
Last active May 29, 2020
Latency Numbers Every Programmer Should Know
View latency.txt
Latency Comparison Numbers (~2012)
----------------------------------
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
@ptitfred
ptitfred / git-incr-build.sh
Created Mar 23, 2012
Incremental Maven Build for Modules based Maven project
View git-incr-build.sh
#!/bin/bash -e
# NB: the file is named git-incr-build.sh to let Gist colorize, but you should name it git-incr-build
# Put this script in your PATH and call it this way:
# git incr-build clean install
# Can be combined with git pull --rebase and git push to make an "fast & safe push" script
function branchName {
git rev-parse --symbolic-full-name --abbrev-ref $1
}
@entaroadun
entaroadun / gist:1653794
Created Jan 21, 2012
Recommendation and Ratings Public Data Sets For Machine Learning
View gist:1653794

Movies Recommendation:

Music Recommendation:

@entaroadun
entaroadun / visualization_in_js.md
Created Dec 23, 2011
Visualization using Javascript on Github
View visualization_in_js.md

Data visualization in one of three most important steps in data mining (https://github.com/entaroadun/hnpickup#readme). Often times, it's impossible to understand data without proper visualization. I went looking for great tools to do that.

Two website list recent JS visualization frameworks:

Most of them are available on Github. My three favorite:

@lucasfais
lucasfais / gist:1207002
Created Sep 9, 2011
Sublime Text 2 - Useful Shortcuts
View gist:1207002

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T go to file
⌘⌃P go to project
⌘R go to methods
⌃G go to line
⌘KB toggle side bar
⌘⇧P command prompt
You can’t perform that action at this time.