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Add benchmark tests for ToString
(cherry picked from commit 81808e5)
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‎nanoFramework.CoreLibrary.Benchmarks.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.14.36623.8
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "nanoFramework.CoreLibrary.Benchmarks", "nanoFramework.CoreLibrary.Benchmarks\nanoFramework.CoreLibrary.Benchmarks.nfproj", "{DFF849AB-F56C-4173-9E3C-5FD551914B0F}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{DFF849AB-F56C-4173-9E3C-5FD551914B0F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{DFF849AB-F56C-4173-9E3C-5FD551914B0F}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{DFF849AB-F56C-4173-9E3C-5FD551914B0F}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
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{DFF849AB-F56C-4173-9E3C-5FD551914B0F}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{DFF849AB-F56C-4173-9E3C-5FD551914B0F}.Release|Any CPU.Build.0 = Release|Any CPU
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{DFF849AB-F56C-4173-9E3C-5FD551914B0F}.Release|Any CPU.Deploy.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {B0D58340-A787-48A6-B53F-1678A4E57960}
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EndGlobalSection
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EndGlobal

‎nanoFramework.CoreLibrary.Benchmarks/Program.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System.Diagnostics;
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using System.Threading;
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using nanoFramework.Benchmark;
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using nanoFramework.CoreLibrary.Benchmarks.ToString;
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using nanoFramework.Runtime.Native;
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namespace nanoFramework.CoreLibrary.Benchmarks
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{
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public class Program
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{
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public static void Main()
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{
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// Display header with system information
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Debug.WriteLine("================================================");
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Debug.WriteLine(" nanoFramework Core Library Benchmarks");
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Debug.WriteLine("================================================");
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Debug.WriteLine("");
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Debug.WriteLine($"Target Name: {SystemInfo.TargetName}");
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Debug.WriteLine($"Firmware: {SystemInfo.Version}");
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var coreLibVersion = typeof(object).Assembly.GetName().Version;
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Debug.WriteLine($"CoreLibrary Version: {coreLibVersion}");
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Debug.WriteLine("");
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Debug.WriteLine("================================================");
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Debug.WriteLine("");
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// Run benchmarks
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BenchmarkRunner.RunClass(typeof(ToStringPlain));
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BenchmarkRunner.RunClass(typeof(ToStringConcatenation));
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BenchmarkRunner.RunClass(typeof(ToStringInterpolation));
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BenchmarkRunner.RunClass(typeof(ToStringFormat));
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Thread.Sleep(Timeout.Infinite);
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}
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}
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}

‎nanoFramework.CoreLibrary.Benchmarks/Properties/AssemblyInfo.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyTitle("CSharp.BlankApplication")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("CSharp.BlankApplication")]
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[assembly: AssemblyCopyright("Copyright © 2025")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]
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// Version information for an assembly consists of the following four values:
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//
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// Major Version
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// Minor Version
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// Build Number
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// Revision
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//
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// You can specify all the values or you can default the Build and Revision Numbers
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// by using the '*' as shown below:
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// [assembly: AssemblyVersion("1.0.*")]
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]

‎nanoFramework.CoreLibrary.Benchmarks/ToString/ToStringConcatenation.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using nanoFramework.Benchmark;
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using nanoFramework.Benchmark.Attributes;
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namespace nanoFramework.CoreLibrary.Benchmarks.ToString
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{
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[IterationCount(5)]
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public class ToStringConcatenation
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{
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private int _intValue;
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private long _longValue;
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private double _doubleValue;
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private bool _boolValue;
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private byte _byteValue;
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private DateTime _dateTimeValue;
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private string _stringValue;
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[Setup]
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public void Setup()
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{
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_intValue = 12345;
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_longValue = 1234567890123456L;
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_doubleValue = 123.456;
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_boolValue = true;
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_byteValue = 255;
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_dateTimeValue = new DateTime(2024, 1, 15, 10, 30, 45);
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_stringValue = "test";
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}
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[Benchmark]
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public void Int32Concatenation()
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{
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_ = "Value: " + _intValue;
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}
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[Benchmark]
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public void Int64Concatenation()
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{
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_ = "Value: " + _longValue;
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}
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[Benchmark]
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public void DoubleConcatenation()
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{
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_ = "Value: " + _doubleValue;
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}
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[Benchmark]
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public void BooleanConcatenation()
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{
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_ = "Value: " + _boolValue;
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}
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[Benchmark]
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public void ByteConcatenation()
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{
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_ = "Value: " + _byteValue;
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}
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[Benchmark]
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public void DateTimeConcatenation()
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{
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_ = "Value: " + _dateTimeValue;
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}
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[Benchmark]
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public void MultipleValuesConcatenation()
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{
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_ = "Int: " + _intValue + ", Double: " + _doubleValue + ", Bool: " + _boolValue;
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}
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[Benchmark]
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public void MixedConcatenation()
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{
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_ = "String: " + _stringValue + ", Int: " + _intValue + ", DateTime: " + _dateTimeValue;
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}
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[Benchmark]
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public void ComplexConcatenation()
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{
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_ = "Values - Byte: " + _byteValue + ", Long: " + _longValue + ", Double: " + _doubleValue + ", Bool: " + _boolValue;
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}
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[Benchmark]
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public void ExplicitToStringConcatenation()
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{
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_ = "Value: " + _intValue.ToString();
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}
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[Benchmark]
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public void MultipleExplicitToStringConcatenation()
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{
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_ = "Int: " + _intValue.ToString() + ", Double: " + _doubleValue.ToString() + ", Bool: " + _boolValue.ToString();
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}
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}
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}

‎nanoFramework.CoreLibrary.Benchmarks/ToString/ToStringFormat.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using nanoFramework.Benchmark;
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using nanoFramework.Benchmark.Attributes;
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namespace nanoFramework.CoreLibrary.Benchmarks.ToString
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{
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[IterationCount(5)]
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public class ToStringFormat
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{
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private int _intValue;
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private long _longValue;
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private double _doubleValue;
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private bool _boolValue;
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private byte _byteValue;
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private DateTime _dateTimeValue;
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private string _stringValue;
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[Setup]
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public void Setup()
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{
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_intValue = 12345;
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_longValue = 1234567890123456L;
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_doubleValue = 123.456;
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_boolValue = true;
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_byteValue = 255;
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_dateTimeValue = new DateTime(2024, 1, 15, 10, 30, 45);
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_stringValue = "test";
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}
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[Benchmark]
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public void Int32Format()
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{
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_ = string.Format("Value: {0}", _intValue);
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}
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[Benchmark]
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public void Int64Format()
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{
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_ = string.Format("Value: {0}", _longValue);
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}
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[Benchmark]
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public void DoubleFormat()
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{
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_ = string.Format("Value: {0}", _doubleValue);
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}
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[Benchmark]
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public void BooleanFormat()
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{
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_ = string.Format("Value: {0}", _boolValue);
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}
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[Benchmark]
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public void ByteFormat()
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{
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_ = string.Format("Value: {0}", _byteValue);
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}
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[Benchmark]
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public void DateTimeFormat()
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{
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_ = string.Format("Value: {0}", _dateTimeValue);
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}
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[Benchmark]
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public void MultipleValuesFormat()
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{
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_ = string.Format("Int: {0}, Double: {1}, Bool: {2}", _intValue, _doubleValue, _boolValue);
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}
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[Benchmark]
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public void MixedFormat()
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{
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_ = string.Format("String: {0}, Int: {1}, DateTime: {2}", _stringValue, _intValue, _dateTimeValue);
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}
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[Benchmark]
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public void ComplexFormat()
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{
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_ = string.Format("Values - Byte: {0}, Long: {1}, Double: {2}, Bool: {3}", _byteValue, _longValue, _doubleValue, _boolValue);
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}
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[Benchmark]
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public void ReorderedFormat()
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{
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_ = string.Format("Values: {2}, {1}, {0}", _intValue, _doubleValue, _boolValue);
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}
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[Benchmark]
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public void RepeatedFormat()
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{
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_ = string.Format("Value {0} repeated: {0}, {0}", _intValue);
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}
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}
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}

‎nanoFramework.CoreLibrary.Benchmarks/ToString/ToStringInterpolation.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using nanoFramework.Benchmark;
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using nanoFramework.Benchmark.Attributes;
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namespace nanoFramework.CoreLibrary.Benchmarks.ToString
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{
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[IterationCount(5)]
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public class ToStringInterpolation
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{
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private int _intValue;
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private long _longValue;
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private double _doubleValue;
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private bool _boolValue;
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private byte _byteValue;
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private DateTime _dateTimeValue;
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private string _stringValue;
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[Setup]
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public void Setup()
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{
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_intValue = 12345;
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_longValue = 1234567890123456L;
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_doubleValue = 123.456;
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_boolValue = true;
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_byteValue = 255;
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_dateTimeValue = new DateTime(2024, 1, 15, 10, 30, 45);
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_stringValue = "test";
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}
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[Benchmark]
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public void Int32Interpolation()
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{
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_ = $"Value: {_intValue}";
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}
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[Benchmark]
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public void Int64Interpolation()
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{
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_ = $"Value: {_longValue}";
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}
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[Benchmark]
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public void DoubleInterpolation()
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{
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_ = $"Value: {_doubleValue}";
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}
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[Benchmark]
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public void BooleanInterpolation()
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{
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_ = $"Value: {_boolValue}";
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}
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[Benchmark]
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public void ByteInterpolation()
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{
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_ = $"Value: {_byteValue}";
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}
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[Benchmark]
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public void DateTimeInterpolation()
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{
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_ = $"Value: {_dateTimeValue}";
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}
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[Benchmark]
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public void MultipleValuesInterpolation()
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{
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_ = $"Int: {_intValue}, Double: {_doubleValue}, Bool: {_boolValue}";
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}
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[Benchmark]
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public void MixedInterpolation()
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{
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_ = $"String: {_stringValue}, Int: {_intValue}, DateTime: {_dateTimeValue}";
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}
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[Benchmark]
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public void ComplexInterpolation()
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{
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_ = $"Values - Byte: {_byteValue}, Long: {_longValue}, Double: {_doubleValue}, Bool: {_boolValue}";
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}
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}
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}

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