You use the following lifetime qualifiers for variables just like you would, say, const.
__strong
__weak
__unsafe_unretained
__autoreleasing
- __strong is the default. An object remains “alive” as long as there is a strong pointer to it.
Kaijie Yu Kjuly
Kjuly
/ ky_xcode_runscript_for_version.sh
Created
February 22, 2015 14:12
Xcode run script for version, whenever build a new version, can choose to increase bundle version, update build date & git latest commit hash.
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| #!/bin/bash | |
| # | |
| # Xcode run script for version, whenever build a new version, | |
| # can choose to increase bundle version, update build date | |
| # & git latest commit hash. | |
| # | |
| # | |
| # Usage: | |
| # | |
| # Copy this file under the root folder of the project, and make sure it's executable: |
Kjuly
/ ky_iOS_external_keyboard_action.m
Last active
August 29, 2015 14:07
iOS external keyboard action, like RETURN button of the external keyboard, code sample below
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| - (NSArray *)keyCommands | |
| { | |
| return @[[UIKeyCommand keyCommandWithInput:@"\r" | |
| modifierFlags:0 | |
| action:@selector(didPressExternalKeyboardReturnButton)]]; | |
| } | |
| - (void)didPressExternalKeyboardReturnButton | |
| { | |
| // do ur action here |
Kjuly
/ ky_iOS_arc_variable_qualifiers.md
Last active
August 29, 2015 14:07
iOS ARC Variable Qualifiers
Kjuly
/ .gitignore_for_xcodeproj
Last active
August 29, 2015 14:06
— forked from adamgit/.gitignore
Git .gitignore file for Xcode project.
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| ######################### | |
| # .gitignore file for Xcode4 / OS X Source projects | |
| # | |
| # Version 2.0 | |
| # For latest version, see: http://stackoverflow.com/questions/49478/git-ignore-file-for-xcode-projects | |
| # | |
| # 2013 updates: | |
| # - fixed the broken "save personal Schemes" | |
| # | |
| # NB: if you are storing "built" products, this WILL NOT WORK, |
Kjuly
/ ky_type_of_image_data.m
Created
May 28, 2014 02:13
A simple function from Nolan O'Brien that can be used to determine the type of image data based on the first couple bytes of the header.
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| static inline NSPUIImageType NSPUIImageTypeFromData(NSData *imageData) | |
| { | |
| if (imageData.length > 4) { | |
| const unsigned char * bytes = [imageData bytes]; | |
| if (bytes[0] == 0xff && | |
| bytes[1] == 0xd8 && | |
| bytes[2] == 0xff) | |
| { | |
| return NSPUIImageType_JPEG; |
- ARMv8/ARM64:
iPhone 6,iPhone 5s,iPad Air,Retina iPad Mini - ARMv7s:
iPhone 5,iPhone 5c,iPad 4 - ARMv7:
iPhone 3GS,iPhone 4,iPhone 4S,iPod 3G/4G/5G,iPad,iPad 2,iPad 3,iPad Mini - ARMv6:
iPhone,iPhone 3G,iPod 1G/2G
Kjuly
/ ky_uiimage_rotation.m
Created
February 13, 2014 16:59
Rotate UIImage instance (90 degree as an e.g. here).
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| UIImage * image = ... | |
| // Redraw image with rotation | |
| CGSize originalSize = image.size; | |
| CGSize finalSize = CGSizeMake(originalSize.height, originalSize.width); | |
| UIGraphicsBeginImageContext(finalSize); | |
| CGContextRef context = UIGraphicsGetCurrentContext(); | |
| CGAffineTransform transform = CGAffineTransformIdentity; |
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