mfaani

Great video on stdin vs stdout: https://www.youtube.com/watch?v=OsErpB0-mWY

stdin

As a standard your input usually comes from the keyboard. Ex cat file.txt. <- here you're passing file.txt as a parameter.

However you can do cat < $file_name i.e. make the input to the cat command a variable.

Both cat file.txt & cat < file.txt achieve the same, but through different mechanics. < is passing something as an input.

I suppose it's because the cat command has abilities to handle file names as arguments and through stdin

atierian

Architecture

• Doordash mobile architecture
• Evernote rewrite mobile app
• Scaling up an iOS app using modules

Offline Sync and Cache

• Dropbox photo offline sync
• Airbnb message sync
• Netflix download
• Trello offline works
• Expedia API cache

digiter

//Tutorial https://www.objc.io/issues/17-security/inside-code-signing/

//Print which signing certificates are on computer
security find-identity -v -p codesigning

//Print what was used to codesign an app
codesign -vv -d Example.app

//Print what entitlements are enabled for app
codesign -d --entitlements - Example.app

damian-rzeszot

alias plistbuddy=/usr/libexec/PlistBuddy
alias codesign=/usr/bin/codesign


#
# Bundle identifier
#

set_plist_bundle_identifier() {
  local bundle_identifier="$1"

IsaacXen

WWDC                                2006  2007  2008  2009
2010 2011 2012 2013 2014 

mgrider

# Swift syntax highlighting for Vim

# Original Source: http://wingsquare.com/blog/swift-script-syntax-highlighting-and-indentation-for-vim-text-editor/
# Another helpful article: https://billyto.github.io/blog/swift-syntax-vim
# More about Vim packages: http://vimcasts.org/episodes/packages/

echo "--- creating ~/.vim/pack/bundle/start dir.."
mkdir -p ~/.vim/pack/bundle/start

echo "--- Cloning Apple's Swift repo.."

tclementdev

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

• You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

• Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

wanyakun

Debugger commands:

  apropos           -- List debugger commands related to a word or subject.
  breakpoint        -- Commands for operating on breakpoints (see 'help b' for
                       shorthand.)
  bugreport         -- Commands for creating domain-specific bug reports.
  command           -- Commands for managing custom LLDB commands.
  disassemble       -- Disassemble specified instructions in the current
                       target.  Defaults to the current function for the
                       current thread and stack frame.

AlamofireSoftwareFoundation

// AFNetworking
[[AFHTTPSessionManager manager] GET:@"http://httpbin.org/ip" parameters:nil success:^(NSURLSessionDataTask *task, id JSON) {
    NSLog(@"IP Address: %@", JSON[@"origin"]);
} failure:^(NSURLSessionDataTask *task, NSError *error) {
    NSLog(@"Error: %@", error);
}];


// NSURLSession
NSURL *URL = [NSURL URLWithString:@"http://httpbin.org/ip"];

larryaasen

# Open the existing Xcode project
project_file = product_name + '.xcodeproj'
project = Xcodeproj::Project.new(project_file)

# Add a file to the project in the main group
file_name = 'Message.m'
group_name = product_name
file = project.new_file(file_name, group_name)

# Add the file to the main target