rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

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Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

zqqf16

- (void)viewDidLoad
{
    [super viewDidLoad];

    // init VPN manager
    self.vpnManager = [NEVPNManager sharedManager];

    // load config from perference
    [_vpnManager loadFromPreferencesWithCompletionHandler:^(NSError *error) {

rsaunders100

+ (NSString *)htmlFromBodyString:(NSString *)htmlBodyString
                        textFont:(UIFont *)font
                       textColor:(UIColor *)textColor
{
    int numComponents = CGColorGetNumberOfComponents([textColor CGColor]);
    
    NSAssert(numComponents == 4 || numComponents == 2, @"Unsupported color format");
    
    // E.g. FF00A5
    NSString *colorHexString = nil;

mendelgusmao

#!/bin/sh
### BEGIN INIT INFO
# Provides: btsync
# Required-Start: $local_fs $remote_fs
# Required-Stop: $local_fs $remote_fs
# Should-Start: $network
# Should-Stop: $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Multi-user daemonized version of btsync.

HungHuynh

#pragma mark - Draw Oxyz

-(void)drawOxyz:(CGPoint)_pointO withX:(CGPoint)_pointX withY:(CGPoint)_pointY withZ:(CGPoint)_pointZ withColor:(BOOL)isRed{
    [self drawLine:CGPointMake(_pointO.x + PADDLE, _pointO.y) with:_pointX withRed:isRed];
    [self drawLine:CGPointMake(_pointO.x , _pointO.y - PADDLE) with:_pointY withRed:isRed];
    [self drawLine:CGPointMake(_pointO.x + PADDLE/2, _pointO.y - PADDLE/2 ) with:_pointZ withRed:isRed];
}

#pragma mark - Draw Line

vstoykov

#!/bin/bash
if [ `whoami` != 'root' ]; then
    echo "You must to be root"
    exit
fi

DOWNLOAD_URL="http://geolite.maxmind.com/download/geoip/database/GeoLiteCity.dat.gz"
TEMPFILE="/tmp/GeoIPCity.dat"
TEMPFILEGZ="$TEMPFILE.gz"
GEOIP_DIR="/usr/local/share/GeoIP"

elivz

server {
    # Redirect yoursite.com to www.yoursite.com
    server_name         yoursite.com;
    rewrite ^(.*)       http://www.yoursite.com$1 permanent;
}

server {

    # Tell nginx to handle requests for the www.yoursite.com domain
    server_name         www.yoursite.com;