Iffy 1.5.4

Iffy

The one extension method you never knew you needed it that much:

iffy, if-as-a-method. Use conditions in fluent builder patterns, everywhere.

Three flavours to construct your if-method, using:

1. arguments: .If(condition, then, [else])
2. a builder: .If(condition).Then(action).Else([action])
3. or an expression: .If(condition ? action : action)

if, then

new ServiceCollection()
    .If(IsDevelopment(),  then => then.AddSingleton<...>())
    .BuildServiceProvider()

if, then, else

new ServiceCollection()
    .If(IsDevelopment(),  
        then => then.AddSingleton<...>(), 
        @else => @else.AddSingleton<...>())
    .BuildServiceProvider()

if().then()

new ServiceCollection()
    .If(IsDevelopment())
    .Then(s => s.AddSingleton<...>()) 
    .Else()
    .BuildServiceProvider()

⚠️ You must close the builder with an .Else([action]), otherwise it will not be executed!

or:

new ServiceCollection()
    .If(IsDevelopment())
    .Then(s => s.AddSingleton<...>()) 
    .Else(_ => _)
    .BuildServiceProvider()

for when the .Else() method is not available (due to different input/output types).

if().then().else()

new ServiceCollection()
    .If(IsDevelopment())
    .Then(s => s.AddSingleton<...>()) 
    .Else(s => s.AddSingleton<...>())
    .BuildServiceProvider()

⚠️ You must close the builder with an .Else([action]), otherwise it will not be executed!

if ?:

new ServiceCollection()
    .If(IsDevelopment() 
        ? s => s.AddSingleton<...>()
        : s => s.AddSingleton<...>())
    .BuildServiceProvider()

This one is a bit of a hack since it just accepts and executes whatever expression you provide. But it looks so pretty 🥰.

and with any other builder

new ServiceCollection()
    .AddRebus(configure => configure
        .Transport(t => t.UseAzureServiceBus("", "", new DefaultAzureCredential())
            .AutomaticallyRenewPeekLock()
            .SetDuplicateDetectionHistoryTimeWindow(new TimeSpan(0, 2, 0))
            .If(IsDevelopment()
                ? s => s.SetAutoDeleteOnIdle(TimeSpan.FromMinutes(5))
                : s => s.DoNotCreateQueues()
                    .DoNotCheckQueueConfiguration())
            .If(!IsDevelopment(), then => then
                .DoNotCreateQueues()
                .DoNotCheckQueueConfiguration())
            .If(IsDevelopment(),
                then => then
                    .SetAutoDeleteOnIdle(TimeSpan.FromMinutes(5)),
                @else => @else
                    .DoNotCreateQueues()
                    .DoNotCheckQueueConfiguration())
            .If(IsDevelopment())
            .Then(settings => settings
                .SetAutoDeleteOnIdle(TimeSpan.FromMinutes(5)))
            .Else(settings => settings
                .DoNotCreateQueues()
                .DoNotCheckQueueConfiguration())));

benchmark

BenchmarkDotNet=v0.13.4, OS=macOS 13.1 (22C65) [Darwin 22.2.0]
Apple M1, 1 CPU, 8 logical and 8 physical cores
.NET SDK=6.0.405
  [Host]     : .NET 6.0.13 (6.0.1322.58009), Arm64 RyuJIT AdvSIMD
  Job-DYHKDS : .NET 6.0.13 (6.0.1322.58009), Arm64 RyuJIT AdvSIMD

InvocationCount=1000000  IterationCount=5  LaunchCount=1  
WarmupCount=3  

See for yourselves in Iffy.Benchmark.