RU: Этот код расширяет протокол View в SwiftUI, предоставляя методы для условного применения модификаторов к представлениям на основе булевых и опциональных значений. EN: This code extends the View protocol in SwiftUI, providing methods for conditionally applying modifiers to views based on boolean and optional values

View+ConditionModifiers.swift

import SwiftUI

// Extension to handle boolean conditions
extension View {
    @ViewBuilder
    public func `if`<Transform: View>(
        _ value: Bool,
        transform: (Self) -> Transform
    ) -> some View {
        if value {
            transform(self)
        } else {
            self
        }
    }
    
    @ViewBuilder
    public func `if`<TrueContent: View, FalseContent: View>(
        _ value: Bool,
        if ifTransform: (Self) -> TrueContent,
        else elseTransform: (Self) -> FalseContent
    ) -> some View {
        if value {
            ifTransform(self)
        } else {
            elseTransform(self)
        }
    }
}

// Extension to handle optional values with true/false branches
extension View {
    @ViewBuilder
    public func ifLet<V, TrueContent: View, FalseContent: View>(
        _ value: V?,
        if ifTransform: (Self, V) -> TrueContent,
        else elseTransform: (Self) -> FalseContent
    ) -> some View {
        if value != nil {
            ifTransform(self, value!)
        } else {
            elseTransform(self)
        }
    }
}

// Extension to handle optional values (if-let)
extension View {
    @ViewBuilder
    public func ifLet<V, Transform: View>(
        _ value: V?,
        transform: (Self, V) -> Transform
    ) -> some View {
        if value != nil {
            transform(self, value!)
        } else {
            self
        }
    }
}