Show hidden files in mac osx

1.Open the terminal and enter

   defaults write com.apple.finder AppleShowAllFiles YES

2.Relaunch the finder by holding alt/option and rightclick on finder and choose relaunch

The other way is true for hiding the hidden files in finder

Find URL Schemes of any app

Here you can find url schemes for most of the apps.
http://handleopenurl.com/

iTunes Link Maker

Link directly to an app in the App Store app on the device. Determine the link to the app itself using the iTunes Link Maker at http://itunes.apple.com/linkmaker

How to use http in iOS 9

From iOS 9 apple has adopted ATS(Application Transport Security) which is set of standards that paves way for secured communication and https is one of them.

You can bypass this adding the following key in iOS

NSAppTransportSecurity</key> NSAllowsArbitraryLoads</key> <true/></dict>

Location of provisioning profile

~/Library/MobileDevice/Provisioning Profiles

MIME Types in Apache Web Server OSX

Its in /private/etc/apache2 there you can find mime.types configuration file.
You can change after that restart the apache to take effect of your changes

xcode make a file non-arc

1. Build Phases -> Compile Sources
2. Choose the file and click on it enter -fno-objc-arc on compiler flags