Learing swift

Try to make something everyday with swift.

iPhone Project with swift:

• Removing Storyboard
• Init with nib for view controller
• Adding tableview
• Registering class with classForCoder()
• Adding tableview delegate

Trying Request

• URL with string
• Playground cannot make request
• Block

Implementing PokemonKit a wrapper class of Pokeapi-v2 written in swift

• Writing closeure, block in swift public func fetchBerryList(completion: (result: NSArray) -> Void, failure: (error: NSError) -> Void)
• Define dictionary [NSLocalizedDescriptionKey: "Berry List Error"]
• Tools for mapping objects Link

Trying PromiseKit

• Write a promise

publicfunc fetchBerryList()->Promise<[PKMBaseObject]>{returnPromise{ fulfill, reject inletURL= baseURL +"/berry"Alamofire.request(.GET, URL).responseArray{(response:Response<[PKMBaseObject],NSError>)inif(response.result.isSuccess){fulfill(response.result.value!)}else{reject(response.result.error!)}}};
}

• Writing test case with swift
• Testing asnc calls

letasyncExpectation=expectationWithDescription("Fetch berries")PokemonKit.fetchBerryList().then{ response in
asyncExpectation.fulfill()}.error{ err inXCTFail("Should not failed with \(err)")}self.waitForExpectationsWithTimeout(30){(err)->VoidinXCTAssertNil(err,"Something went wrong")}

• Fixing missing closure for AnyPromise

PokemonKit.fetchBerry("1").then { response ->Void in // this is the fix (-> Void in)
...continue...

Loading cocoapods library bundle resources

Add Resource path in podspec

s.resource_bundles={'CSSwift'=>['Pod/Assets/*.js']}

Load it with NSBundle

func loadCssJs(){
cssJs =JSContext()letpodBundle=NSBundle(forClass:self.classForCoder)iflet bundleURL = podBundle.URLForResource("CSSwift", withExtension:"bundle"){iflet bundle =NSBundle(URL: bundleURL){letcssJsPath= bundle.pathForResource("css", ofType:"js")do{letcontent=tryString(contentsOfFile: cssJsPath!)
cssJs.evaluateScript(content)}catch{}}else{assertionFailure("Could not load the bundle")}}else{assertionFailure("Could not create a path to the bundle")}}

For-in loop

fordictin jsResult{
result.append(CSSModel(infoDict: dict as![String:AnyObject]))}

Init functions

convenienceinit(infoDict:[String:AnyObject]!){self.init()
rules =infoDict["rules"]! as?[AnyObject]
selector =infoDict["selector"]! as?String}

Adding variable in JavascriptCore

cssJs.setObject(cssString, forKeyedSubscript:"cssValue")
// don't use cssJs.evaluateScript("var cssString = '\(cssString)';"), line break will not work

Checking platform

#if os(iOS)import CSSwiftiOS
#elseimport CSSwift
#endif

isEquals in Swift

// Useful when compare arrays of objects
overridepublicfunc isEqual(object:AnyObject?)->Bool{guardlet rhs = object as?CSSRuleModelelse{returnfalse}letlhs=selfreturn(lhs.ruleName == rhs.ruleName &&
lhs.ruleContent == rhs.ruleContent)}

Assoicate Object

privatestructAssociatedKeys{staticvarCSSisUrlAssociationKey:UInt8=0}publicvarisUrl:Bool!{get{guardlet result =objc_getAssociatedObject(self,&AssociatedKeys.CSSisUrlAssociationKey)as?Boolelse{returnfalse}return result
}set{iflet newValue = newValue {objc_setAssociatedObject(self,&AssociatedKeys.CSSisUrlAssociationKey,
newValue,.OBJC_ASSOCIATION_RETAIN_NONATOMIC
)}}}

Day X

Fuck Swift, I am going back to Objective-C