adas-core/adas-core.Domain/Utils/CollectionsUtils.cs

using System.Collections;

namespace adas_core.Domain.Utils;

public static class CollectionsUtils
{
    public static bool IsNullOrEmpty<T>(this List<T>? value)
    {
        return value == null || !value.Any();
    }

    public static bool IsEmptyOrNull<T>(List<T>? value)
    {
        return value == null || !value.Any();
    }

    public static bool HasElements<T>(List<T>? value)
    {
        return value != null && value.Any();
    }

    public static bool IsNotEmpty<T>(List<T> value)
    {
        return !IsEmptyOrNull(value);
    }

    public static List<T> EmptyIfNull<T>(List<T>? value)
    {
        return value ?? [];
    }

    public static List<T>? NullIfEmpty<T>(List<T> value)
    {
        return IsEmptyOrNull(value) ? null : value;
    }

    public static Array ToArray(ICollection collection, Type type)
    {
        var result = Array.CreateInstance(type, collection.Count);
        collection.CopyTo(result, 0);
        return result;
    }

    public static List<string> IfEmptyOrNull(List<string> list, List<string> defaultList)
    {
        return IsEmptyOrNull(list) ? defaultList : list;
    }
}