| <?php | |
| function substring_format($value='', $local) | |
| { | |
| $substring = substr_replace($value, '-'.(substr($value, strlen($value)-$local, 4)),strlen($value)-$local, 4); | |
| if (substr($substring, 4, 1) != '-') { | |
| return substring_format($substring, $local+5); |
| po [[UIWindow keyWindow] _autolayoutTrace] // prints layouts ambiguity | |
| po [view constraintsAffectingLayoutForAxis:0] // horizontal | |
| po [view constraintsAffectingLayoutForAxis:1] // vertical | |
| [view hasAmbiguousLayout] // BOOL | |
| [view exerciseAmbiguityInLayout] // visualizing ambiguity | |
| viewController.extendedLayoutIncludesOpaqueBars = NO; | |
| viewController.automaticallyAdjustsScrollViewInsets = NO; | |
| viewController.edgesForExtendedLayout = UIRectEdgeNone; |
These instructions will guide you through the process of setting up local, trusted websites on your own computer.
These instructions are intended to be used on Mac OSX Yosemite.
NOTE: You may substitute the edit command for nano, vim, or whatever the editor of your choice is. Personally, I forward edit to Sublime Text:
alias edit="/Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl"
| struct Person { | |
| let name: String | |
| let lastname: String | |
| } | |
| class Reflection { | |
| func printProperties(mirror: _MirrorType) { | |
| for i in 0..<mirror.count { | |
| let (name, childMirror) = mirror[i] | |
| let value = childMirror.value |
| import Foundation | |
| protocol ExchangeRate { | |
| var value: Double { get } | |
| } | |
| extension ExchangeRate { | |
| func businessTaxCalculated() -> Double { | |
| return value*(1.5/100) | |
| } |
| import Foundation | |
| protocol ExchangeProtocol { | |
| var value: Double { get } | |
| } | |
| protocol Taxable { | |
| var value: Double { get } | |
| func calculated(exch: ExchangeProtocol) -> Double | |
| } |
| import Foundation | |
| protocol Cacheable { | |
| associatedtype Key | |
| associatedtype Object | |
| func set(key: Key, object: Object) | |
| func get(key: Key) -> Object? | |
| } |
| import Foundation | |
| /* | |
| "Method swizzling is the process of changing the implementation of an existing selector. | |
| It’s a technique made possible by the fact that method invocations in Objective-C can be | |
| changed at runtime, by changing how selectors are mapped to underlying functions in a | |
| class’s dispatch table." | |
| Source: https://nshipster.com/method-swizzling/ | |
| "This is only possible because in Objective-C the method to call when a message is sent |
| func getDocumentsDirectory() -> URL { | |
| let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask) | |
| return paths[0] | |
| } | |
| func writeOnFile(str: String) { | |
| let filename = getDocumentsDirectory().appendingPathComponent("output.txt") | |
| do { | |
| if FileManager.default.fileExists(atPath: filename.path), let data = "\(str)\n".data(using: .utf8) { |
| import Foundation | |
| protocol AsyncDispatcher { | |
| func async( | |
| group: DispatchGroup?, | |
| qos: DispatchQoS, | |
| flags: DispatchWorkItemFlags, | |
| execute work: @escaping @convention(block) () -> Void | |
| ) | |
| func async(execute work: @escaping @convention(block) () -> Void) |