Bits of .NET

Manual null checks are verbose. C# 11 has built-in helper for cleaner validation.

Old Way:

public void ProcessUser(User user, string name, ILogger logger)
{
    if (user == null)
        throw new ArgumentNullException(nameof(user));
    if (name == null)
        throw new ArgumentNullException(nameof(name));
    if (logger == null)
        throw new ArgumentNullException(nameof(logger));
    
    // Actual logic...
}

New Way (C# 11):

public void ProcessUser(User user, string name, ILogger logger)
{
    ArgumentNullException.ThrowIfNull(user);
    ArgumentNullException.ThrowIfNull(name);
    ArgumentNullException.ThrowIfNull(logger);
    
    // Actual logic...
}

// Same validation, 70% less code!

With Custom Message:

ArgumentNullException.ThrowIfNull(user, nameof(user));

Other Helpers:

ArgumentNullException.ThrowIfNullOrEmpty(name);
ArgumentNullException.ThrowIfNullOrWhiteSpace(input);
ArgumentOutOfRangeException.ThrowIfNegative(count);
ArgumentOutOfRangeException.ThrowIfZero(divisor);

Concise, readable, built-in!