Headless.Extensions 0.4.15

.NET 10.0

dotnet add package Headless.Extensions --version 0.4.15

NuGet\Install-Package Headless.Extensions -Version 0.4.15

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="Headless.Extensions" Version="0.4.15" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="Headless.Extensions" Version="0.4.15" />
                    

                            Directory.Packages.props

<PackageReference Include="Headless.Extensions" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add Headless.Extensions --version 0.4.15

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Headless.Extensions, 0.4.15"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package Headless.Extensions@0.4.15

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=Headless.Extensions&version=0.4.15
                    

                            Install as a Cake Addin

#tool nuget:?package=Headless.Extensions&version=0.4.15
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Headless.Extensions

Foundational utility library providing extension methods, primitives, helpers, and common abstractions used throughout the framework.

Problem Solved

Eliminates repetitive utility code across projects by providing a comprehensive set of battle-tested extensions, helpers, and primitives for common operations (strings, collections, dates, IO, reflection, etc.).

Key Features

Result Pattern:
- ApiResult / ApiResult<T> - Success/failure with built-in error factories (NotFound, Conflict, Forbidden, Unauthorized, ValidationFailed)
- Result<TValue, TError> / Result<TError> - Flexible result types with custom error types
- ResultError hierarchy - NotFoundError, UnauthorizedError, ForbiddenError, ConflictError, ValidationError, AggregateError
- ErrorDescriptor - Standardized error reporting with code, description, severity, and params
Primitives (Source-generated with JSON/TypeConverter support):
- UserId / AccountId - Strongly-typed identifiers
- Money - Currency-aware decimal with arithmetic operators
- Month - Month representation
- PhoneNumber - E.164 phone number
- Image / File - Media metadata
- PageMetadata - SEO metadata
- TenantInformation - Tenant data
Domain Value Objects: Currency, GeoCoordinate, FullGeoCoordinate, Range<T>, PreferredLocale, OrderBy, NameValue<T>, ExtraProperties, Locales, TimeUnit
ID Generation: IGuidGenerator (sequential GUIDs for SQL Server/MySQL/Oracle), ILongIdGenerator (SnowflakeId)
Pagination: IndexPageRequest/IndexPage<T> and ContinuationPageRequest/ContinuationPage<T>
Collections: ParallelForEachAsync, DetectChanges, EquatableArray<T>, ComparerFactory, TypeList
LINQ: PredicateBuilder for composing EF Core expressions (And, Or, Not)
Dates & Time: Fluent date manipulation, TimeProvider extensions, timezone conversion, ChangeableTimezoneTimeProvider
Strings: Humanize integration, truncation, manipulation helpers
Constants: RegexPatterns (email, URL, IP, etc.), ContentTypes, HttpHeaderNames, JwtClaimTypes, UserClaimTypes, LanguageCodes
Reflection: Fast property accessors, type scanning, IL emit helpers, AssemblyInformation
HTTP: BasicAuthenticationValue, HttpStatusCodeExtensions
Exceptions: EntityNotFoundException, ConflictException
Validation: MobilePhoneNumberValidator, GeoCoordinateValidator, EmailValidator, EgyptianNationalIdValidator
Helpers: OsHelper, DisposableFactory, IpAddressHelper

Installation

dotnet add package Headless.Extensions

Quick Start

Result Pattern

public async Task<ApiResult<User>> GetUserAsync(Guid id)
{
    var user = await _repo.GetByIdAsync(id);
    if (user is null)
        return ApiResult<User>.NotFound();

    return ApiResult<User>.Ok(user);
}

Collection Extensions

await users.ParallelForEachAsync(
    async user => await ProcessUserAsync(user),
    maxDegreeOfParallelism: 5
);

Change Detection

var (added, removed, existing) = oldItems.DetectChanges(
    newItems,
    areSameEntity: (old, @new) => old.Id == @new.Id
);

Expression Composition

var filter = PredicateBuilder.True<Product>()
    .And(p => p.Price > 0)
    .And(p => p.IsActive);

var products = await dbContext.Products.Where(filter).ToListAsync();

Configuration

No configuration required.

Dependencies

Headless.Checks
Headless.Generator.Primitives (source generator)
Headless.Generator.Primitives.Abstractions
CommunityToolkit.HighPerformance
Humanizer.Core
IdGen
libphonenumber-csharp
Microsoft.Bcl.TimeProvider
MimeTypes
morelinq
Nito.AsyncEx
Nito.Disposables
Polly.Core
System.Reactive
TimeZoneConverter

Side Effects

None.

Product	Compatible and additional computed target framework versions.
.NET	net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net10.0
- CommunityToolkit.HighPerformance (>= 8.4.2)
- Headless.Checks (>= 0.4.15)
- Headless.Generator.Primitives.Abstractions (>= 0.4.15)
- Humanizer.Core (>= 3.0.10)
- IdGen (>= 3.0.7)
- JetBrains.Annotations (>= 2025.2.4)
- libphonenumber-csharp (>= 9.0.30)
- Microsoft.Bcl.TimeProvider (>= 10.0.8)
- morelinq (>= 4.4.0)
- Nito.AsyncEx (>= 5.1.2)
- Nito.Disposables (>= 2.5.0)
- Polly.Core (>= 8.6.6)
- System.Reactive (>= 6.1.0)
- TimeZoneConverter (>= 7.2.0)

NuGet packages (6)

Showing the top 5 NuGet packages that depend on Headless.Extensions:

Package	Downloads
Headless.DistributedLocks.Abstractions Package Description	76
Headless.Blobs.Abstractions Package Description	70
Headless.FluentValidation Package Description	70
Headless.Core Package Description	68
Headless.Caching.Abstractions Package Description	66