import braintree venmo in swift 4 code example

Example 1: how to use 2 alerts in swiftui

enum ActiveAlert {
    case first, second
}

struct ToggleView: View {
    @State private var showAlert = false
    @State private var activeAlert: ActiveAlert = .first

    var body: some View {

        Button(action: {
            if Bool.random() {
                self.activeAlert = .first
            } else {
                self.activeAlert = .second
            }
            self.showAlert = true
        }) {
            Text("Show random alert")
        }
        .alert(isPresented: $showAlert) {
            switch activeAlert {
            case .first:
                return Alert(title: Text("First Alert"), message: Text("This is the first alert"))
            case .second:
                return Alert(title: Text("Second Alert"), message: Text("This is the second alert"))
            }
        }
    }
}

Example 2: How to implement Bootstrap 4 for Angular 2 ngb-pagination

<div class="container-fluid">
    <div class="col-6 input-group">
        <div class="col-5 input-group-addon">
            <ngb-pagination [collectionSize]="users.length" #numPages [pageSize]="itemsPerPage" [(page)]="currentPage" (pageChange)="onPageChange(currentPage)"></ngb-pagination>
        </div>
        <div class="col-1 input-group-addon">
            <input class="input-sm text-center" type="number" [min]="10" [max]="users.length" step="1" [(ngModel)]="itemsPerPage" (onClick)="changePagesize(pageSize)">
        </div>
    </div>
    <ul *ngIf="users">
        <li *ngFor="let user of users | slice: pageSize | slice: 0:itemsPerPage">
            <img [src]="user.avatar" alt="{{ user.avatar }}">
            <p>{{ user.id }}. {{ user.first_name }} {{ user.last_name }}</p>
        </li>
    </ul>
    <pre><span class="float-md-left">Page: {{ currentPage }} / {{numPages.pageCount}}</span><span class="float-md-right">Found items: {{ itemsPerPage }} / {{ users.length }}</span></pre>
</div>