This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.
To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
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 |
echo -e "\e[1;40m" ; clear ; while :; do echo $LINES $COLUMNS $(( $RANDOM % $COLUMNS)) $(( $RANDOM % 72 )) ;sleep 0.05; done|awk '{ letters="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789@#$%^&*()"; c=$4; letter=substr(letters,c,1);a[$3]=0;for (x in a) {o=a[x];a[x]=a[x]+1; printf "\033[%s;%sH\033[2;32m%s",o,x,letter; printf "\033[%s;%sH\033[1;37m%s\033[0;0H",a[x],x,letter;if (a[x] >= $1) { a[x]=0; } }}' |
var levelup = require('levelup') | |
var fs = require('fs'); | |
var db = levelup('./imagedb') | |
db.put('name', fs.readFileSync('image.png'), { encoding: 'binary' }, function (err) { | |
db.get('name', { encoding: 'binary' }, function (err, value) { | |
fs.writeFile('image-copy.png', value, function (err) { | |
console.log('image-copy.png saved!'); | |
}); | |
}) |
Automated analysis is the main advantage to working with a modern statically typed compiled language like C++. Code analysis tools can inform us when we have implemented an operator overload with a non-canonical form, when we should have made a method const, or when the scope of a variable can be reduced.
I've been wanting to do a serious project in Go. One thing holding me back has been a my working environment. As a huge PyCharm user, I was hoping the Go IDE plugin for IntelliJ IDEA would fit my needs. However, it never felt quite right. After a previous experiment a few years ago using Vim, I knew how powerful it could be if I put in the time to make it so. Luckily there are plugins for almost anything you need to do with Go or what you would expect form and IDE. While this is no where near comprehensive, it will get you writing code, building and testing with the power you would expect from Vim.
I'm assuming you're coming with a clean slate. For me this was OSX so I used MacVim. There is nothing in my config files that assumes this is the case.
#!/usr/bin/python | |
# -*- coding: utf-8 -*- | |
import sublime_plugin | |
import subprocess | |
from time import sleep | |
import sys | |
cl = lambda line: subprocess.Popen(line, shell=True, stdout=subprocess.PIPE).communicate()[0].strip() | |
log = lambda message: sys.stderr.write("Log: %s\n" % message) |
package main | |
import ( | |
"net/http" | |
) | |
func main() { | |
go func() { | |
http.ListenAndServe(":8001", &fooHandler{}) | |
}() |
fn main() { | |
let mut ifx = Ifx::new("localhost:8080"); | |
for i in 0..20 { | |
ifx.send(i); | |
} | |
} | |
use std::fmt::Display; | |
use std::io::{BufRead, BufReader, Lines, Write}; | |
use std::net::TcpStream; |