More The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions from the SwiftUI world:
struct ExpensesList: View {
// @Environment(\.modelContext) private var modelContext
let expenses: [Expense]
var groupedExpenses: [(key: Date, value: [Expense])] {
Dictionary(grouping: expenses) {
Calendar.current.startOfDay(for: $0.date)
}
.sorted { $0.key > $1.key }
}
var body: some View { // ❌ The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions
List {
ForEach(groupedExpenses, id: \.key) { (date, expenses) in
Section {
ForEach(expenses) { expense in
NavigationLink {
ExpenseView(expense: expense)
} label: {
HStack {
Text(expense.name)
Spacer()
if expense.receipt == nil {
Image(systemName: "exclamationmark.circle.fill")
.foregroundStyle(.yellow)
.symbolRenderingMode(.hierarchical)
}
Text(expense.amount.formatted(.currency(code: "BRL")))
.monospacedDigit()
.foregroundColor(.secondary)
}
}
.swipeActions(edge: .trailing) {
Button(
"Apagar",
systemImage: "trash",
role: .destructive
) {
modelContext.delete(expense) // 🟡 ERROR EXPECTED HERE
}
}
}
} header: {
LabeledContent {
let total = (expenses.reduce(0) { $0 + $1.amount })
Text(total.formatted(.currency(code: "BRL")))
.foregroundStyle(.tertiary)
} label: {
Text(date.formatted(date: .abbreviated, time: .omitted))
.font(.subheadline)
}
.padding(.trailing)
}
}
}
}
}
Small changes, like removing header content, causes strange errors:
Section {
ForEach(expenses) { expense in // ❌ Cannot convert value of type '[Expense]' to expected argument type 'Range<Int>'
NavigationLink {
ExpenseView(expense: expense) // ❌ Cannot convert value of type 'Int' to expected argument type 'Expense'
} label: {
HStack {
Text(expense.name) // ❌ Value of type 'Int' has no member 'name'
Spacer()
if expense.receipt == nil {
Image(systemName: "exclamationmark.circle.fill")
.foregroundStyle(.yellow)
.symbolRenderingMode(.hierarchical)
}
Text(expense.amount.formatted(.currency(code: "BRL")))
.monospacedDigit()
.foregroundColor(.secondary)
}
}
.swipeActions(edge: .trailing) {
Button(
"Apagar",
systemImage: "trash",
role: .destructive
) {
modelContext.delete(expense) // 🟡 ERROR EXPECTED HERE
}
}
}
}
With simple view in the ForEach the compiler reports and error in the right place:
ForEach(expenses) { expense in
Text(expense.name)
.swipeActions(edge: .trailing) {
Button(
"Apagar",
systemImage: "trash",
role: .destructive
) {
modelContext.delete(expense) // ❌ Value of type '(ModelContext) -> some View' has no member 'delete'
}
}
}
Still not the best in this case because View has a modelContext(_ modelContext: ModelContext) -> some View modifier.
If it’s another word, like context, it correctly reports ❌ Cannot find 'context' in scope.