| javascript:(function() { | |
| function copyToClipboard(text) { | |
| if (window.clipboardData && window.clipboardData.setData) { | |
| /*IE specific code path to prevent textarea being shown while dialog is visible.*/ | |
| return clipboardData.setData("Text", text); | |
| } else if (document.queryCommandSupported && document.queryCommandSupported("copy")) { | |
| var textarea = document.createElement("textarea"); | |
| textarea.textContent = text; |
| # Luke's config for the Zoomer Shell | |
| # Enable colors and change prompt: | |
| autoload -U colors && colors | |
| PS1="%B%{$fg[red]%}[%{$fg[yellow]%}%n%{$fg[green]%}@%{$fg[blue]%}%M %{$fg[magenta]%}%~%{$fg[red]%}]%{$reset_color%}$%b " | |
| # History in cache directory: | |
| HISTSIZE=10000 | |
| SAVEHIST=10000 | |
| HISTFILE=~/.cache/zsh/history |
| twitter.com##article:has(a:has-text(/liked|replied|follow/i)) | |
| twitter.com##article:has(a:has-text(/liked|replied|follow/i)):xpath(../..) + div | |
| twitter.com##article:has(a:has-text(/liked|replied|follow/i)):xpath(../..) + div + div | |
| twitter.com##div > div > div > div > div > div > div > div > div > div:has-text(/You might like|Trends for you|Who to follow/) | |
| twitter.com##div [role="heading"]:has-text(/Who to follow/):xpath(..) | |
| twitter.com##div [role="heading"]:has-text(/Who to follow/):xpath(../../..) + div | |
| twitter.com##div [role="heading"]:has-text(/Who to follow/):xpath(../../..) + div + div | |
| twitter.com##div [role="heading"]:has-text(/Who to follow/):xpath(../../..) + div + div + div | |
| twitter.com##div [role="heading"]:has-text(/Who to follow/):xpath(../../..) + div + div + div + div |
Summary of GDB commands for x86-64 Systems
Reformated from http://csapp.cs.cmu.edu/3e/docs/gdbnotes-x86-64.txt
| #!/bin/bash | |
| # | |
| # Script for running `go test` a bunch of times, in parallel, storing the test | |
| # output as you go, and showing a nice status output telling you how you're | |
| # doing. | |
| # | |
| # Normally, you should be able to execute this script with | |
| # | |
| # ./go-test-many.sh | |
| # |
| 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 |
