IanKeen

Don't let your UIViewController think for itself...

Last time I showed you one strategy for trimming the fat from our view controller by seperating out protocols. In part 2 of this 3 part series we are going to use an architecture known as MVVM to dumb down our view controller. View controllers are usually filled with business rules, this is a problem for a number of reasons, two of which being:

• It makes the code harder to reason about; let the view controller worry about appearance and the business objects worry about the logic, we don't want them thinking for themselves ;)
• It makes your view controller bloated; business rules don't belong in your view controller

MVVM ?

MVVM stands for Model View ViewModel and is just a way of describing how to break up your interface, business rules and data so that they flow together in a logical, but seperated, way.

This is what that flow looks like

outro56

progrium/bashstyle

Bash is the JavaScript of systems programming. Although in some cases it's better to use a systems language like C or Go, Bash is an ideal systems language for smaller POSIX-oriented or command line tasks. Here's three quick reasons why:

• It's everywhere. Like JavaScript for the web, Bash is already there ready for systems programming.
• It's neutral. Unlike Ruby, Python, JavaScript, or PHP, Bash offends equally across all communities. ;)
• It's made to be glue. Write complex parts in C or Go (or whatever!), and glue them together with Bash.

This document is how I write Bash and how I'd like collaborators to write Bash with me in my open source projects. It's based on a lot of experience and time collecting best practices. Most of them come from these two articles, but here integrated, slightly modified, and focusing on the most bang for buck items. Plus some ne

nicolasembleton

#!/bin/bash

sudo kextunload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
sudo kextload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

nicklockwood

Suppose you have a network method that only uses a single block callback

typedef void (^Handler)(BOOL success, id response, NSError *error);

- (void)makeRequestWithHandler:(Handler)handler;

But you have to make this request dozens of times, and you want to reuse the same failure handler in most cases? Easy, just have a factory function that returns a block:

typedef void (^SuccessHandler)(id response);

typedef void (^ErrorHandler)(NSError *error);

gdavis

ACTION
AD_HOC_CODE_SIGNING_ALLOWED
ALTERNATE_GROUP
ALTERNATE_MODE
ALTERNATE_OWNER
ALWAYS_SEARCH_USER_PATHS
ALWAYS_USE_SEPARATE_HEADERMAPS
APPLE_INTERNAL_DEVELOPER_DIR
APPLE_INTERNAL_DIR
APPLE_INTERNAL_DOCUMENTATION_DIR

jofi

# expand_path is genuine and DOES KNOW ABOUT absolute and relative paths
File.expand_path('relative/path/to/dir_or_file', '/start/path') # "/start/path/relative/path/to/dir_or_file"
File.expand_path('../application', __FILE__) # "/absolute/path/to/FILE/../application"
File.expand_path('/path/to/dir_or_file', '/start/path') # "/path/to/dir_or_file"
File.expand_path('../path/to/dir_or_file', '/start/path') # "/start/path/to/dir_or_file"

# join seems to be STUPID. It just joins strings (and adds file separator if needed)
File.join('some/path/', '/other/path.rb') # "some/path/other/path.rb"

# modify the global load path:

felipecsl

sudo kill `ps -ax | grep 'coreaudiod' | grep 'sbin' |awk '{print $1}'`
# or...
sudo killall coreaudiod

akshay1188

- (UIImage *)compressImage:(UIImage *)image{
    float actualHeight = image.size.height;
    float actualWidth = image.size.width;
    float maxHeight = 600.0;
    float maxWidth = 800.0;
    float imgRatio = actualWidth/actualHeight;
    float maxRatio = maxWidth/maxHeight;
    float compressionQuality = 0.5;//50 percent compression
    
    if (actualHeight > maxHeight || actualWidth > maxWidth) {

remi

[alias]
  verbs = !git log --pretty=format:'%s' | cut -d \" \" -f 1 | sort | uniq -c | sort -nr