- Don't add code cruft. Avoid parentheses around conditions in if-statements or with the
return
keyword. Don't add semicolons except where syntactically demanded in statements or to separate statements on the same line. - Don't use ALL_CAPS; use camelCase
- Don't fight type inference. Use enumeration prefixes, self-references, and class names (with constructors) only when necessary or to clarify coding intent.
- Don't use
var
whenlet
is appropriate, especially for properties. The compiler better optimizeslet
statements for items whose values will not change during their lifetime. For example, Apple writes, "It is good practice to create immutable collections in all cases where the collection does not need to change. Doing so enables the Swift compiler to optimize the performance of the collections you create." - Don't use classes when structs will do. Use class
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$ brew install carthage | |
$ cat > Cartfile | |
github "Alamofire/Alamofire" | |
github "SwiftyJSON/SwiftyJSON" | |
# install | |
$ carthage update --platform iOS --verbose | |
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import Foundation | |
import UIKit | |
// Usage Examples | |
let shadowColor = Color.shadow.value | |
let shadowColorWithAlpha = Color.shadow.withAlpha(0.5) | |
let customColorWithAlpha = Color.custom(hexString: "#123edd", alpha: 0.25).value | |
enum Color { | |
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var _fetchedResultsController: NSFetchedResultsController<Entity>? = nil | |
var blockOperations: [BlockOperation] = [] | |
var fetchedResultController: NSFetchedResultsController<Entity> { | |
if _fetchedResultsController != nil { | |
return _fetchedResultsController! | |
} | |
let fetchRequest: NSFetchRequest<Entity> = Entity.fetchRequest() | |
let managedObjectContext = (UIApplication.shared.delegate as! AppDelegate).managedObjectContext! |
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var path = require('path'); | |
module.exports = { | |
entry: path.resolve(__dirname, 'src') + '/app/index.js', | |
output: { | |
path: path.resolve(__dirname, 'dist') + '/app', | |
filename: 'bundle.js', | |
publicPath: '/app/' | |
}, |
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// | |
// Storage.swift | |
// | |
// Created by Grigory Avdyushin on 30.06.16. | |
// Copyright © 2016 Grigory Avdyushin. All rights reserved. | |
// | |
import UIKit | |
import CoreData |
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- Open Automator | |
- File -> New -> Service | |
- Change "Service Receives" to "files or folders" in "Finder" | |
- Add a "Run Shell Script" action | |
- Change "Pass input" to "as arguments" | |
- Paste the following in the shell script box: open -n -b "com.microsoft.VSCode" --args "$*" | |
- Save it as something like "Open in Visual Studio Code" |
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// Swift Standard Librray - String | |
// Keith Harrison http://useyourloaf.com | |
// Import Foundation if you want to bridge to NSString | |
import Foundation | |
// ==== | |
// Initializing a String | |
// ==== |
I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!
\
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- (NSString *)tableView:(UITableView *)tableView titleForSwipeAccessoryButtonForRowAtIndexPath:(NSIndexPath *)indexPath { | |
return @"More"; | |
} | |
- (void)tableView:(UITableView *)tableView swipeAccessoryButtonPushedForRowAtIndexPath:(NSIndexPath *)indexPath { | |
NSLog(@"I wanted to be a pretty public API, but then time ran out and they forgot me..."); | |
// Hide the More/Delete menu. | |
[self setEditing:NO animated:YES]; | |
} |
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