Get Homebrew installed on your mac if you don't already have it
Install highlight. "brew install highlight". (This brings down Lua and Boost as well)
# to undo a git push | |
git push -f origin HEAD^:master | |
# to get to previous commit (preserves working tree) | |
git reset --soft HEAD | |
# to get back to previous commit (you'll lose working tree) | |
git reset --hard HEAD^ |
Get Homebrew installed on your mac if you don't already have it
Install highlight. "brew install highlight". (This brings down Lua and Boost as well)
# Was asked how I keep my zshrc config sync'd between my computers with Dropbox | |
# Add a new directory in your Dropbox (or use an existing one) | |
mkdir -p ~/Dropbox/ohmyzsh | |
# move existing file to Dropbox | |
mv ~/.zshrc ~/Dropbox/ohmyzsh/zshrc | |
# symlink file back to your local directory | |
ln -s ~/Dropbox/ohmyzsh/zshrc ~/.zshrc |
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 |
git ls-files -z | xargs -0n1 git blame -w | perl -n -e '/^.*\((.*?)\s*[\d]{4}/; print $1,"\n"' | sort -f | uniq -c | sort -n |
#!/usr/bin/env bash | |
# This script prints out all of your Redis keys and their size in a human readable format | |
# Copyright 2013 Brent O'Connor | |
# License: http://www.apache.org/licenses/LICENSE-2.0 | |
human_size() { | |
awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } ' | |
} |
People
![]() :bowtie: |
๐ :smile: |
๐ :laughing: |
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๐ :blush: |
๐ :smiley: |
:relaxed: |
๐ :smirk: |
๐ :heart_eyes: |
๐ :kissing_heart: |
๐ :kissing_closed_eyes: |
๐ณ :flushed: |
๐ :relieved: |
๐ :satisfied: |
๐ :grin: |
๐ :wink: |
๐ :stuck_out_tongue_winking_eye: |
๐ :stuck_out_tongue_closed_eyes: |
๐ :grinning: |
๐ :kissing: |
๐ :kissing_smiling_eyes: |
๐ :stuck_out_tongue: |