codeslinger

#include <math.h>
#include <stdio.h>
#include <stdlib.h>


double Normal(double);
double N(double, double, double, double, double);
double delta(double, double, double, double, double);
double delta2(double, double, double);
double ND2(double, double, double);

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

magnetikonline

Collection of sysctl networking notes

• List & reloading changes
• Summary details of each connection status
• Settings tweaking in /etc/sysctl.conf
  • Detailed setting notes
  • Control TIME_WAIT and connection tracking timeouts
• Miscellaneous
  • Nginx Plus additions
• Further reading

silv3rm00n

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>

	<!--
		Documented at
		http://linux.die.net/man/5/fonts-conf
			
		To check font mapping run the command at terminal
		$ fc-match 'helvetica Neue'

odony

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>

	<!--
		Documented at
		http://linux.die.net/man/5/fonts-conf
			
		To check font mapping run the command at terminal
		$ fc-match 'helvetica Neue'

abhinavsingh

import zmq

def main():
    try:
        context = zmq.Context(1)

        frontend = context.socket(zmq.SUB)
        frontend.bind('tcp://*:5559')
        frontend.setsockopt(zmq.SUBSCRIBE, '')

kevin-smets

Default

Powerlevel10k

carlosfunk

# To run this file you will need to open Powershell as administrator and first run:
# Set-ExecutionPolicy Unrestricted
# Then source this script by running:
# . .\install_python.ps1

$save_dir=Resolve-Path ~/Downloads
$project_dir = "C:\Projects"
$virtualenv_dir = $project_dir + "\virtualenvs"

$client = New-Object System.Net.WebClient

brendanzab

NOTE: This was first authored on 26 Feb 2014. Things may have changed since then.

C++'s Templates

C++'s templates could be seen as forming a duck typed, purely functional code generation program that is run at compile time. Types are not checked at the initial invocation stage, rather the template continues to expand until it is either successful, or runs into an operation that is not supported by that specific type – in that case the compiler spits out a 'stack trace' of the state of the template expansion.

To see this in action, lets look at a very simple example:

template 

boxmein

// Dead simple compressed and encrypted datastore
var crypto = require('crypto');
var zlib   = require('zlib');
var fs     = require('fs');
var stream = require('stream');

// Load the session store from #{filename} and decrypt it using #{method} with
// the key #{key}.
// @param filename {String} filename
// @param key the encryption key, can be a string or buffer