5cover

    /// <summary>Creates a valid Windows filename from a string.</summary>
    /// <param name="filename">The filename candidate.</param>
    /// <param name="replaceInvalidCharsWith">What to replace invalid filename chars in <paramref name="filename"/> with.</param>
    /// <returns>
    /// A new <see cref="string"/>, equivalent to <paramref name="filename"/>, but modified to be a valid Windows filename if it
    /// <paramref name="filename"/> wasn't already.
    /// </returns>
    /// <exception cref="ArgumentException"/>
    /// <remarks>The length of the filename is not checked, and the casing is not modified.</remarks>
    public static string ToFilename(this string filename, string replaceInvalidCharsWith = "_")

5cover

using System;
using System.Linq;
using System.Text.RegularExpressions;
using System.Text;

string str = @"
a1 = b1;
a2 = b2;
a3 = b3;";

5cover

using System;
using System.Collections.Generic;
using static System.Diagnostics.Debug;

public static class Program
{
    private enum Demographic
    {
        Men18To30,
        CollegeEducatedWomenOver40,

5cover

    public static IEnumerable<T> FindVisualChildren<T>(this DependencyObject depObj) where T : DependencyObject
    {
        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
        {
            var child = VisualTreeHelper.GetChild(depObj, i);
            if (child is T t)
            {
                yield return t;
            }
            foreach (T childOfChild in FindVisualChildren<T>(child))

5cover

public sealed class Ref<T>
{
    public Ref(T value) => Value = value;
    public T Value { get; set; }
    public static implicit operator T(Ref<T> @ref) => @ref.Value;
}

5cover

using System.Globalization;
using System.Windows.Data;

/// <summary>A converter based on equality comparisons between the value and the parameter.</summary>
public sealed class EqualsConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        => Equals(value, parameter);

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

5cover

public static void EreaseSelection(this ICollectionView collectionView) => collectionView.MoveCurrentToPosition(-1);

5cover

<TextBlock>
    <TextBlock.Text>
        <MultiBinding StringFormat="{}{0:F0}x{1:F0}">
            <Binding ElementName="window" Path="ActualWidth" />
            <Binding ElementName="window" Path="ActualHeight" />
        </MultiBinding>
    </TextBlock.Text>
</TextBlock>

5cover

    public static async Task WithTimeout(this Task task, TimeSpan timeout)
    {
        CancellationTokenSource cts = new();
        if (task == await Task.WhenAny(task, Task.Delay(timeout, cts.Token)))
        {
            cts.Cancel();
        }
        else
        {
            throw new TimeoutException();

5cover

    private static void EnsureAdminPrivileges()
    {
        if (new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator))
        {
            return;
        }
        ProcessStartInfo processInfo = new(Environment.ProcessPath.NotNull())
        {
            UseShellExecute = true,
            Verb = "runas"