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7 min readTo hide the height of a UITableView when a button is clicked in Swift, you can do the following:Create an outlet for the UITableView and connect it to your storyboard or XIB file. @IBOutlet weak var tableView: UITableView! Create an outlet for the UIButton and connect it to your storyboard or XIB file. @IBOutlet weak var button: UIButton! In your ViewController, set the delegate and dataSource of the UITableView to self. override func viewDidLoad() { super.viewDidLoad() tableView.
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5 min readTo get the first two elements of a stack in Swift, you can use the pop() method in a loop. Here is an example of how you can achieve this: var stack = Stack<Int>() // Assuming you have implemented a stack data structure // Push some elements onto the stack stack.push(1) stack.push(2) stack.push(3) stack.push(4) stack.push(5) var firstTwoElements: [Int] = [] // Pop the first two elements from the stack for _ in 0..<2 { if let element = stack.pop() { firstTwoElements.
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10 min readThe Mass Index (MI) is a technical analysis indicator that is used to identify potential reversals in the stock market. It was developed by Donald Dorsey in the early 1990s. The Mass Index focuses on detecting periods of price compression, which usually precede a significant breakout or reversal.To calculate the Mass Index, the following steps are followed:Determine the single-day price range: This is done by subtracting the low price of the day from the high price of the day.
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4 min readTo convert a byte array to a string in Swift, you can use the String initializer that takes a utf8CodeUnits parameter. Here's the code: let byteArray: [UInt8] = [72, 101, 108, 108, 111] // Example byte array if let convertedString = String(bytes: byteArray, encoding: .
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11 min readThe Average Directional Index (ADX) is a technical indicator used primarily in analyzing the strength and momentum of a trend. It is commonly used by traders, including scalpers, to make informed decisions regarding entry and exit points in the market.Scalping is a trading strategy that involves making numerous short-term trades to capture small profits from small price movements. It requires quick decision-making and agility.
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6 min readTo compare two JSON objects in Swift, you can follow these steps:Ensure you have the Foundation framework imported at the top of your Swift file: import Foundation Convert the JSON objects to Data using JSONSerialization: guard let jsonData1 = try? JSONSerialization.data(withJSONObject: json1, options: []), let jsonData2 = try? JSONSerialization.
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4 min readTo parse a Unicode string in Swift, you can use the built-in functions and libraries provided by the Swift programming language. Here is the process:Start by importing the Foundation framework, which provides various string manipulation and encoding functionalities in Swift. import Foundation Define the Unicode string that you want to parse. let unicodeString = "Some unicode string 你好.
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10 min readIn Swift, you can determine whether a color is white or black by checking the color values of its components. The color is considered white if all three components (red, green, and blue) are equal to 1.0. Similarly, the color is considered black if all three components are equal to 0.0.To detect the color, you can access the UIColor object's red, green, and blue properties, which provide the normalized color component values between 0.0 and 1.0.
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11 min readTrading with Moving Min involves using a moving average (MA) indicator to identify potential buy or sell signals in the financial markets. Moving average is a popular technical analysis tool that helps eliminate short-term price fluctuations and emphasizes the overall trend direction.The concept of Moving Min strategy revolves around the interaction between the price action and the moving average.
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5 min readTo append an item in a Swift datasource, you can follow these steps:Identify the type of your datasource, whether it is an array, dictionary, set, or any other collection type. If your datasource is an array, you can use the append method to add a new item at the end of the array. For example: var myArray = ["Apple", "Banana", "Orange"] myArray.
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12 min readSwing trading is a popular trading strategy for active traders in the financial market. It involves buying and selling financial instruments, usually stocks, within short time frames, typically days to weeks, in an attempt to capture short-term price movements.Moving averages (MA) are widely used technical indicators in swing trading. They help to identify the overall trend and potential entry/exit points for trades.