Fix ADB Unauthorized(Esp Windows + Wi-fi)

If you get in trouble with unauthorized device message, copy adbkey file to ~/.android 

GPT to MBR(+ext3)

My external HDD is "Seagate Backup Plus 500 GB USB 3.0"
I want to use it for NAS(dd-wrt firmed) ,  I changed it to MBR and ext3.

-> gdisk and mkfs.ext3 is best solution!

http://www.ehow.com/how_12119053_convert-gpt-mbr-linux.html


* If you want to use only data storage, you can remove reserved space which is 5% of whole disk.
sudo tune2fs -m 0 /dev/sdb1

(http://geekyprojects.com/ubuntu/how-to-format-a-usb-external-hard-drive-for-linux/)

Raspbian gitlab issue

1. bundle install fail
-> Define highest version of "therubyracer and libv8" in Gemfile, Gemfile.lock

In Gemfile

gem "therubyracer", "0.12.0"


In Gemfile.lock

therubyracer (0.12.0)
libv8 (3.16.14.3)


2. When first connect, very very very slow.
-> You must extend timeout both unicorn and nginx
-> config/unicorn.rb , /etc/nginx/nginx.conf -> timeout 3000

Raspbian locale problem on OSX

When using raspbian with ssh connect on OSX, you can see error message like belows

locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory

-> Just comment out "SendEnv LANG LC_*" in /etc/ssh_config on your OSX.

htpasswd without apache

Source
http://forum.nginx.org/read.php?6,210155,210168#msg-210168

1. echo -e "your-username:`perl -le 'print crypt("your-password","salt")'`" > /etc/nginx/htpasswd

2. online tool: http://www.htaccesstools.com/htpasswd-generator/

3. ruby -le 'print "your-username: #{%Q{your password}.crypt(%Q{salt})}"'

WWDC 2013 Summary : 226-HD Implementing Engaging UI on iOS

-> Custom Transition

-> UISnapshotting -> Improvement on  [CALayer renderInContext]

snapshotView : Fastest

drawViewHierarchyInRect : Faster

Making Blurred Background -> drawViewHierarchyInRect & applyLightEfftect

-> Custom Appearance  : self.window setTintColor

[UIImage resizableImageWithCapInsets]

minimum height - 44px

Focus & Intent!

Affirmative(positive) button -> right

WWDC 2013 Summary : 228-HD Hidden Gems in Cocoa and Cocoa Touch

<NSHipster>

<Xcode>

OpenQuickly : cmd-shift-o

Related Files : ctl + 1

Breakpoint Actions

Debug description : 

(NSString *)debugDescription{ return @"Verbose debugging string";} -> (lldb) po self.rootViewController -> Verbose debugging string

Recursive description

http://jeffreysambells.com/2013/01/24/debugging-layouts-with-recursive-view-descriptions-in-xcode

http://vimeo.com/56405472

<OBJC>

Custom-indexed Subscripting

NSOperation

NSExpression

NSSet & NSOrderedSet

Collection Tricks - reverseObjectEnumerator.allObjects -> reverse

NSFastEnumeration -> for in 

NSValue

NSValue withPoint, Range

Custom Value -> typedef struct RGB { float red, green, blue; } _RGB; RGB Color={1.0f, 0.0f, 0.0f}; -> [NSValue valueWithBytes: &color objCType:@encode(RGB)];

Key & Value Coding

-String

NSDataDetector - Dates, Addresses, Links, Phone Numbers, Transit information

CFStringTransform - esp name unicode characters, transliterate between orthographies(안녕하세요->annyeonghaseyo,  ひらがな＜ー＞かたかな、romaji)

Normalizing Input -> all english char .. etc..

<Core Animation>

CAGradientLayer

CAShapeLayer

CAMediaTiming for interactive animation

<Core Data>

NSPrivateQuqueConcurrencyType

NSIncrementalStore