A compile-time 4-Bit Virtual Machine implemented in TypeScript's type system. Capable of running a sample 'FizzBuzz' program.
Syntax emits zero JavaScript.
type RESULT = VM<
[
["push", N_1], // 1
["push", False], // 2
["peek", _], // 3
I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.
This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea
This gist will show how to setup Raspbian Stretch as a headless Bluetooth A2DP audio sink. This will allow your phone, laptop or other Bluetooth device to play audio wirelessly through a Rasperry Pi.
A quick search will turn up a plethora of tutorials on setting up A2DP on the Raspberry Pi. However, I felt this gist was necessary because this solution is:
Kong, Traefik, Caddy, Linkerd, Fabio, Vulcand, and Netflix Zuul seem to be the most common in microservice proxy/gateway solutions. Kubernetes Ingress is often a simple Ngnix, which is difficult to separate the popularity from other things.
This is just a picture of this link from March 2, 2019
Originally, I had included some other solution
Since Twitter doesn't have an edit button, it's a suitable host for JavaScript modules.
Source tweet: https://twitter.com/rauchg/status/712799807073419264
const leftPad = await requireFromTwitter('712799807073419264');
Successful mitmproxy-3.7 setup tested on OS X 10.13.6 and iPhone X running 12.1.4
Enable IP forwarding and disable ICMP redirects to keep the iPad sending traffic to the proxy
sudo sysctl -w net.inet.ip.forwarding=1
sudo sysctl -w net.inet.ip.redirect=0
net.inet.ip.forwarding
Enable IP forwarding between interfaces
| # Get a random line from the Zen of Python without a print (preferably for a colorful cow to chant!) | |
| # Replace stdout by an anonymous class that returns nothing on write() | |
| import sys | |
| stdout = sys.stdout | |
| sys.stdout = type('BlackHole', (), {'write': (lambda self, string: '')})() | |
| # This import's output has now been supressed | |
| import this |
| var active = false; | |
| function changeRefer(details) { | |
| if (!active) return; | |
| for (var i = 0; i < details.requestHeaders.length; ++i) { | |
| if (details.requestHeaders[i].name === 'Referer') { | |
| details.requestHeaders[i].value = 'http://www.google.com/'; | |
| break; | |
| } |