diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 0000000..fb12939 --- /dev/null +++ b/.editorconfig @@ -0,0 +1,268 @@ +# Remove the line below if you want to inherit .editorconfig settings from higher directories +root = true + +# C# files +[*.cs] + +#### Core EditorConfig Options #### + +# Indentation and spacing +indent_size = 4 +indent_style = space +tab_width = 4 + +# New line preferences +end_of_line = crlf +insert_final_newline = false + +#### .NET Coding Conventions #### + +# Organize usings +dotnet_separate_import_directive_groups = false +dotnet_sort_system_directives_first = true +file_header_template = unset + +# this. and Me. preferences +dotnet_style_qualification_for_event = false +dotnet_style_qualification_for_field = false +dotnet_style_qualification_for_method = false +dotnet_style_qualification_for_property = false + +# Language keywords vs BCL types preferences +dotnet_style_predefined_type_for_locals_parameters_members = true +dotnet_style_predefined_type_for_member_access = true + +# Parentheses preferences +dotnet_style_parentheses_in_arithmetic_binary_operators = never_if_unnecessary +dotnet_style_parentheses_in_other_binary_operators = never_if_unnecessary +dotnet_style_parentheses_in_other_operators = never_if_unnecessary +dotnet_style_parentheses_in_relational_binary_operators = never_if_unnecessary + +# Modifier preferences +dotnet_style_require_accessibility_modifiers = for_non_interface_members + +# Expression-level preferences +dotnet_style_coalesce_expression = true +dotnet_style_collection_initializer = true +dotnet_style_explicit_tuple_names = true +dotnet_style_namespace_match_folder = true +dotnet_style_null_propagation = true +dotnet_style_object_initializer = true +dotnet_style_operator_placement_when_wrapping = beginning_of_line +dotnet_style_prefer_auto_properties = true:warning +dotnet_style_prefer_collection_expression = when_types_loosely_match +dotnet_style_prefer_compound_assignment = true +dotnet_style_prefer_conditional_expression_over_assignment = true:suggestion +dotnet_style_prefer_conditional_expression_over_return = true:suggestion +dotnet_style_prefer_foreach_explicit_cast_in_source = when_strongly_typed +dotnet_style_prefer_inferred_anonymous_type_member_names = true +dotnet_style_prefer_inferred_tuple_names = true +dotnet_style_prefer_is_null_check_over_reference_equality_method = true +dotnet_style_prefer_simplified_boolean_expressions = true +dotnet_style_prefer_simplified_interpolation = true + +# Field preferences +dotnet_style_readonly_field = true + +# Parameter preferences +dotnet_code_quality_unused_parameters = all + +# Suppression preferences +dotnet_remove_unnecessary_suppression_exclusions = none + +# New line preferences +dotnet_style_allow_multiple_blank_lines_experimental = false +dotnet_style_allow_statement_immediately_after_block_experimental = true + +#### C# Coding Conventions #### + +# var preferences +csharp_style_var_elsewhere = false:silent +csharp_style_var_for_built_in_types = true:silent +csharp_style_var_when_type_is_apparent = true:silent + +# Expression-bodied members +csharp_style_expression_bodied_accessors = true:silent +csharp_style_expression_bodied_constructors = true:silent +csharp_style_expression_bodied_indexers = true:silent +csharp_style_expression_bodied_lambdas = true:suggestion +csharp_style_expression_bodied_local_functions = true:suggestion +csharp_style_expression_bodied_methods = true:silent +csharp_style_expression_bodied_operators = true:silent +csharp_style_expression_bodied_properties = true:silent + +# Pattern matching preferences +csharp_style_pattern_matching_over_as_with_null_check = true:suggestion +csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion +csharp_style_prefer_extended_property_pattern = true:suggestion +csharp_style_prefer_not_pattern = true:suggestion +csharp_style_prefer_pattern_matching = true:silent +csharp_style_prefer_switch_expression = true:suggestion + +# Null-checking preferences +csharp_style_conditional_delegate_call = true:suggestion + +# Modifier preferences +csharp_prefer_static_local_function = true:suggestion +csharp_preferred_modifier_order = public,private,protected,internal,file,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,required,volatile,async +csharp_style_prefer_readonly_struct = true:suggestion +csharp_style_prefer_readonly_struct_member = true:suggestion + +# Code-block preferences +csharp_prefer_braces = true:silent +csharp_prefer_simple_using_statement = true:suggestion +csharp_style_namespace_declarations = file_scoped:silent +csharp_style_prefer_method_group_conversion = true:silent +csharp_style_prefer_primary_constructors = true:suggestion +csharp_style_prefer_top_level_statements = true:silent + +# Expression-level preferences +csharp_prefer_simple_default_expression = true:suggestion +csharp_style_deconstructed_variable_declaration = true:suggestion +csharp_style_implicit_object_creation_when_type_is_apparent = true:suggestion +csharp_style_inlined_variable_declaration = true:suggestion +csharp_style_prefer_index_operator = true:suggestion +csharp_style_prefer_local_over_anonymous_function = true:suggestion +csharp_style_prefer_null_check_over_type_check = true:suggestion +csharp_style_prefer_range_operator = true:suggestion +csharp_style_prefer_tuple_swap = true:suggestion +csharp_style_prefer_utf8_string_literals = true:suggestion +csharp_style_throw_expression = true:suggestion +csharp_style_unused_value_assignment_preference = discard_variable:silent +csharp_style_unused_value_expression_statement_preference = discard_variable:silent + +# 'using' directive preferences +csharp_using_directive_placement = outside_namespace:suggestion + +# New line preferences +csharp_style_allow_blank_line_after_colon_in_constructor_initializer_experimental = false:silent +csharp_style_allow_blank_line_after_token_in_arrow_expression_clause_experimental = true:silent +csharp_style_allow_blank_line_after_token_in_conditional_expression_experimental = true:silent +csharp_style_allow_blank_lines_between_consecutive_braces_experimental = false:silent +csharp_style_allow_embedded_statements_on_same_line_experimental = true:silent + +#### C# Formatting Rules #### + +# New line preferences +csharp_new_line_before_catch = true +csharp_new_line_before_else = true +csharp_new_line_before_finally = true +csharp_new_line_before_members_in_anonymous_types = true +csharp_new_line_before_members_in_object_initializers = true +csharp_new_line_before_open_brace = all +csharp_new_line_between_query_expression_clauses = true + +# Indentation preferences +csharp_indent_block_contents = true +csharp_indent_braces = false +csharp_indent_case_contents = true +csharp_indent_case_contents_when_block = true +csharp_indent_labels = one_less_than_current +csharp_indent_switch_labels = true + +# Space preferences +csharp_space_after_cast = false +csharp_space_after_colon_in_inheritance_clause = true +csharp_space_after_comma = true +csharp_space_after_dot = false +csharp_space_after_keywords_in_control_flow_statements = true +csharp_space_after_semicolon_in_for_statement = true +csharp_space_around_binary_operators = before_and_after +csharp_space_around_declaration_statements = false +csharp_space_before_colon_in_inheritance_clause = true +csharp_space_before_comma = false +csharp_space_before_dot = false +csharp_space_before_open_square_brackets = false +csharp_space_before_semicolon_in_for_statement = false +csharp_space_between_empty_square_brackets = false +csharp_space_between_method_call_empty_parameter_list_parentheses = false +csharp_space_between_method_call_name_and_opening_parenthesis = false +csharp_space_between_method_call_parameter_list_parentheses = false +csharp_space_between_method_declaration_empty_parameter_list_parentheses = false +csharp_space_between_method_declaration_name_and_open_parenthesis = false +csharp_space_between_method_declaration_parameter_list_parentheses = false +csharp_space_between_parentheses = false +csharp_space_between_square_brackets = false + +# Wrapping preferences +csharp_preserve_single_line_blocks = true +csharp_preserve_single_line_statements = true + +#### Naming styles #### + +# Naming rules + +dotnet_naming_rule.interface_should_be_begins_with_i.severity = suggestion +dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface +dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i + +dotnet_naming_rule.types_should_be_pascal_case.severity = suggestion +dotnet_naming_rule.types_should_be_pascal_case.symbols = types +dotnet_naming_rule.types_should_be_pascal_case.style = pascal_case + +dotnet_naming_rule.non_field_members_should_be_pascal_case.severity = suggestion +dotnet_naming_rule.non_field_members_should_be_pascal_case.symbols = non_field_members +dotnet_naming_rule.non_field_members_should_be_pascal_case.style = pascal_case + +# Symbol specifications + +dotnet_naming_symbols.interface.applicable_kinds = interface +dotnet_naming_symbols.interface.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected +dotnet_naming_symbols.interface.required_modifiers = + +dotnet_naming_symbols.types.applicable_kinds = class, struct, interface, enum +dotnet_naming_symbols.types.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected +dotnet_naming_symbols.types.required_modifiers = + +dotnet_naming_symbols.non_field_members.applicable_kinds = property, event, method +dotnet_naming_symbols.non_field_members.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected +dotnet_naming_symbols.non_field_members.required_modifiers = + +# Naming styles + +dotnet_naming_style.pascal_case.required_prefix = +dotnet_naming_style.pascal_case.required_suffix = +dotnet_naming_style.pascal_case.word_separator = +dotnet_naming_style.pascal_case.capitalization = pascal_case + +dotnet_naming_style.begins_with_i.required_prefix = I +dotnet_naming_style.begins_with_i.required_suffix = +dotnet_naming_style.begins_with_i.word_separator = +dotnet_naming_style.begins_with_i.capitalization = pascal_case + +[*.{cs,vb}] +dotnet_style_operator_placement_when_wrapping = beginning_of_line +tab_width = 4 +indent_size = 4 +end_of_line = crlf +dotnet_style_coalesce_expression = true:suggestion +dotnet_style_predefined_type_for_member_access = true:silent +dotnet_style_require_accessibility_modifiers = omit_if_default:silent +dotnet_style_qualification_for_field = false:silent +dotnet_style_qualification_for_property = false:silent +dotnet_style_qualification_for_method = false:silent +dotnet_style_qualification_for_event = false:silent +dotnet_style_null_propagation = true:suggestion +dotnet_style_prefer_is_null_check_over_reference_equality_method = true:suggestion +dotnet_style_prefer_auto_properties = true:warning +dotnet_style_object_initializer = true:suggestion +dotnet_style_collection_initializer = true:suggestion +dotnet_style_prefer_simplified_boolean_expressions = true:suggestion +dotnet_style_prefer_conditional_expression_over_assignment = true:suggestion +dotnet_style_prefer_conditional_expression_over_return = true:suggestion +dotnet_style_explicit_tuple_names = true:suggestion +dotnet_style_prefer_inferred_tuple_names = true:suggestion +dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion +dotnet_style_prefer_compound_assignment = true:suggestion +dotnet_style_prefer_simplified_interpolation = true:suggestion +dotnet_style_prefer_collection_expression = when_types_loosely_match:suggestion +dotnet_style_namespace_match_folder = true:suggestion +dotnet_style_readonly_field = true:suggestion +dotnet_style_predefined_type_for_locals_parameters_members = true:silent +dotnet_style_allow_multiple_blank_lines_experimental = false:silent +dotnet_style_allow_statement_immediately_after_block_experimental = true:silent +dotnet_code_quality_unused_parameters = all:suggestion +dotnet_style_parentheses_in_arithmetic_binary_operators = never_if_unnecessary:silent +dotnet_style_parentheses_in_other_binary_operators = never_if_unnecessary:silent +dotnet_style_parentheses_in_relational_binary_operators = never_if_unnecessary:silent +dotnet_style_parentheses_in_other_operators = never_if_unnecessary:silent \ No newline at end of file diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..1ff0c42 --- /dev/null +++ b/.gitattributes @@ -0,0 +1,63 @@ +############################################################################### +# Set default behavior to automatically normalize line endings. +############################################################################### +* text=auto + +############################################################################### +# Set default behavior for command prompt diff. +# +# This is need for earlier builds of msysgit that does not have it on by +# default for csharp files. +# Note: This is only used by command line +############################################################################### +#*.cs diff=csharp + +############################################################################### +# Set the merge driver for project and solution files +# +# Merging from the command prompt will add diff markers to the files if there +# are conflicts (Merging from VS is not affected by the settings below, in VS +# the diff markers are never inserted). Diff markers may cause the following +# file extensions to fail to load in VS. An alternative would be to treat +# these files as binary and thus will always conflict and require user +# intervention with every merge. To do so, just uncomment the entries below +############################################################################### +#*.sln merge=binary +#*.csproj merge=binary +#*.vbproj merge=binary +#*.vcxproj merge=binary +#*.vcproj merge=binary +#*.dbproj merge=binary +#*.fsproj merge=binary +#*.lsproj merge=binary +#*.wixproj merge=binary +#*.modelproj merge=binary +#*.sqlproj merge=binary +#*.wwaproj merge=binary + +############################################################################### +# behavior for image files +# +# image files are treated as binary by default. +############################################################################### +#*.jpg binary +#*.png binary +#*.gif binary + +############################################################################### +# diff behavior for common document formats +# +# Convert binary document formats to text before diffing them. This feature +# is only available from the command line. Turn it on by uncommenting the +# entries below. +############################################################################### +#*.doc diff=astextplain +#*.DOC diff=astextplain +#*.docx diff=astextplain +#*.DOCX diff=astextplain +#*.dot diff=astextplain +#*.DOT diff=astextplain +#*.pdf diff=astextplain +#*.PDF diff=astextplain +#*.rtf diff=astextplain +#*.RTF diff=astextplain diff --git a/.gitignore b/.gitignore index 940794e..8a30d25 100644 --- a/.gitignore +++ b/.gitignore @@ -1,9 +1,10 @@ ## Ignore Visual Studio temporary files, build results, and ## files generated by popular Visual Studio add-ons. ## -## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore +## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore # User-specific files +*.rsuser *.suo *.user *.userosscache @@ -12,6 +13,9 @@ # User-specific files (MonoDevelop/Xamarin Studio) *.userprefs +# Mono auto generated files +mono_crash.* + # Build results [Dd]ebug/ [Dd]ebugPublic/ @@ -19,43 +23,62 @@ [Rr]eleases/ x64/ x86/ +[Ww][Ii][Nn]32/ +[Aa][Rr][Mm]/ +[Aa][Rr][Mm]64/ bld/ [Bb]in/ [Oo]bj/ [Ll]og/ +[Ll]ogs/ -# Visual Studio 2015 cache/options directory +# Visual Studio 2015/2017 cache/options directory .vs/ # Uncomment if you have tasks that create the project's static files in wwwroot #wwwroot/ +# Visual Studio 2017 auto generated files +Generated\ Files/ + # MSTest test Results [Tt]est[Rr]esult*/ [Bb]uild[Ll]og.* -# NUNIT +# NUnit *.VisualState.xml TestResult.xml +nunit-*.xml # Build Results of an ATL Project [Dd]ebugPS/ [Rr]eleasePS/ dlldata.c +# Benchmark Results +BenchmarkDotNet.Artifacts/ + # .NET Core project.lock.json project.fragment.lock.json artifacts/ -**/Properties/launchSettings.json +# ASP.NET Scaffolding +ScaffoldingReadMe.txt + +# StyleCop +StyleCopReport.xml + +# Files built by Visual Studio *_i.c *_p.c -*_i.h +*_h.h *.ilk *.meta *.obj +*.iobj *.pch *.pdb +*.ipdb *.pgc *.pgd *.rsp @@ -65,7 +88,9 @@ artifacts/ *.tlh *.tmp *.tmp_proj +*_wpftmp.csproj *.log +*.tlog *.vspscc *.vssscc .builds @@ -93,6 +118,9 @@ ipch/ *.vspx *.sap +# Visual Studio Trace Files +*.e2e + # TFS 2012 Local Workspace $tf/ @@ -104,15 +132,21 @@ _ReSharper*/ *.[Rr]e[Ss]harper *.DotSettings.user -# JustCode is a .NET coding add-in -.JustCode - # TeamCity is a build add-in _TeamCity* # DotCover is a Code Coverage Tool *.dotCover +# AxoCover is a Code Coverage Tool +.axoCover/* +!.axoCover/settings.json + +# Coverlet is a free, cross platform Code Coverage Tool +coverage*.json +coverage*.xml +coverage*.info + # Visual Studio code coverage results *.coverage *.coveragexml @@ -148,7 +182,7 @@ publish/ # Publish Web Output *.[Pp]ublish.xml *.azurePubxml -# TODO: Comment the next line if you want to checkin your web deploy settings +# Note: Comment the next line if you want to checkin your web deploy settings, # but database connection strings (with potential passwords) will be unencrypted *.pubxml *.publishproj @@ -160,12 +194,14 @@ PublishScripts/ # NuGet Packages *.nupkg +# NuGet Symbol Packages +*.snupkg # The packages folder can be ignored because of Package Restore -**/packages/* +**/[Pp]ackages/* # except build/, which is used as an MSBuild target. -!**/packages/build/ +!**/[Pp]ackages/build/ # Uncomment if necessary however generally it will be regenerated when needed -#!**/packages/repositories.config +#!**/[Pp]ackages/repositories.config # NuGet v3's project.json files produces more ignorable files *.nuget.props *.nuget.targets @@ -183,12 +219,15 @@ AppPackages/ BundleArtifacts/ Package.StoreAssociation.xml _pkginfo.txt +*.appx +*.appxbundle +*.appxupload # Visual Studio cache files # files ending in .cache can be ignored *.[Cc]ache # but keep track of directories ending in .cache -!*.[Cc]ache/ +!?*.[Cc]ache/ # Others ClientBin/ @@ -201,6 +240,10 @@ ClientBin/ *.publishsettings orleans.codegen.cs +# Including strong name files can present a security risk +# (https://github.com/github/gitignore/pull/2483#issue-259490424) +#*.snk + # Since there are multiple workflows, uncomment next line to ignore bower_components # (https://github.com/github/gitignore/pull/1529#issuecomment-104372622) #bower_components/ @@ -215,6 +258,8 @@ _UpgradeReport_Files/ Backup*/ UpgradeLog*.XML UpgradeLog*.htm +ServiceFabricBackup/ +*.rptproj.bak # SQL Server files *.mdf @@ -225,6 +270,10 @@ UpgradeLog*.htm *.rdl.data *.bim.layout *.bim_*.settings +*.rptproj.rsuser +*- [Bb]ackup.rdl +*- [Bb]ackup ([0-9]).rdl +*- [Bb]ackup ([0-9][0-9]).rdl # Microsoft Fakes FakesAssemblies/ @@ -236,9 +285,6 @@ FakesAssemblies/ .ntvs_analysis.dat node_modules/ -# Typescript v1 declaration files -typings/ - # Visual Studio 6 build log *.plg @@ -248,6 +294,17 @@ typings/ # Visual Studio 6 auto-generated workspace file (contains which files were open etc.) *.vbw +# Visual Studio 6 auto-generated project file (contains which files were open etc.) +*.vbp + +# Visual Studio 6 workspace and project file (working project files containing files to include in project) +*.dsw +*.dsp + +# Visual Studio 6 technical files +*.ncb +*.aps + # Visual Studio LightSwitch build output **/*.HTMLClient/GeneratedArtifacts **/*.DesktopClient/GeneratedArtifacts @@ -263,12 +320,8 @@ paket-files/ # FAKE - F# Make .fake/ -# JetBrains Rider -.idea/ -*.sln.iml - -# CodeRush -.cr/ +# CodeRush personal settings +.cr/personal # Python Tools for Visual Studio (PTVS) __pycache__/ @@ -278,6 +331,9 @@ __pycache__/ # tools/** # !tools/packages.config +# Tabs Studio +*.tss + # Telerik's JustMock configuration file *.jmconfig @@ -286,3 +342,57 @@ __pycache__/ *.btm.cs *.odx.cs *.xsd.cs + +# OpenCover UI analysis results +OpenCover/ + +# Azure Stream Analytics local run output +ASALocalRun/ + +# MSBuild Binary and Structured Log +*.binlog + +# NVidia Nsight GPU debugger configuration file +*.nvuser + +# MFractors (Xamarin productivity tool) working folder +.mfractor/ + +# Local History for Visual Studio +.localhistory/ + +# Visual Studio History (VSHistory) files +.vshistory/ + +# BeatPulse healthcheck temp database +healthchecksdb + +# Backup folder for Package Reference Convert tool in Visual Studio 2017 +MigrationBackup/ + +# Ionide (cross platform F# VS Code tools) working folder +.ionide/ + +# Fody - auto-generated XML schema +FodyWeavers.xsd + +# VS Code files for those working on multiple tools +.vscode/* +!.vscode/settings.json +!.vscode/tasks.json +!.vscode/launch.json +!.vscode/extensions.json +*.code-workspace + +# Local History for Visual Studio Code +.history/ + +# Windows Installer files from build outputs +*.cab +*.msi +*.msix +*.msm +*.msp + +# JetBrains Rider +*.sln.iml diff --git a/ConsoleApp6.sln b/ConsoleApp6.sln index 6e643ef..95eebed 100644 --- a/ConsoleApp6.sln +++ b/ConsoleApp6.sln @@ -1,9 +1,9 @@  Microsoft Visual Studio Solution File, Format Version 12.00 -# Visual Studio 15 -VisualStudioVersion = 15.0.26730.8 +# Visual Studio Version 17 +VisualStudioVersion = 17.9.34526.213 MinimumVisualStudioVersion = 10.0.40219.1 -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsoleApp6", "ConsoleApp6\ConsoleApp6.csproj", "{8FB39C0E-1D84-474C-9445-6E4589C129B6}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConsoleApp6", "ConsoleApp6\ConsoleApp6.csproj", "{8FB39C0E-1D84-474C-9445-6E4589C129B6}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution diff --git a/ConsoleApp6/ConsoleApp6.csproj b/ConsoleApp6/ConsoleApp6.csproj index 0bb4376..45ba4c9 100644 --- a/ConsoleApp6/ConsoleApp6.csproj +++ b/ConsoleApp6/ConsoleApp6.csproj @@ -1,13 +1,16 @@ - + Exe - net6.0 + net8.0 latest + enable + enable + true - + diff --git a/ConsoleApp6/Program.cs b/ConsoleApp6/Program.cs index 3e6af71..0310f5c 100644 --- a/ConsoleApp6/Program.cs +++ b/ConsoleApp6/Program.cs @@ -1,63 +1,59 @@ -using Microsoft.CodeAnalysis.CSharp.Scripting; -using Microsoft.CodeAnalysis.Scripting; -using System; +using System; using System.Collections.Generic; -using System.IO; using System.Linq; using System.Linq.Expressions; -using System.Net; -using System.Security.Claims; using System.Threading.Tasks; +using Microsoft.CodeAnalysis.CSharp.Scripting; +using Microsoft.CodeAnalysis.Scripting; -namespace ConsoleApp6 +namespace ConsoleApp6; + +static class Program { - class Program + public static async Task Main() { - public static async Task Main(string[] args) + Console.WriteLine("Roslyn approach:"); + const string discountFilter = "album => album.Quantity > 100"; + ScriptOptions options = ScriptOptions.Default.AddReferences(typeof(Album).Assembly); + Func discountFilterExpression = await CSharpScript.EvaluateAsync>(discountFilter, options); + + var albums = new List { - Console.WriteLine("Roslyn approach:"); - var discountFilter = "album => album.Quantity > 100"; - var options = ScriptOptions.Default.AddReferences(typeof(Album).Assembly); - Func discountFilterExpression = await CSharpScript.EvaluateAsync>(discountFilter, options); - - var albums = new List - { - new Album { Quantity = 10, Artist = "Betontod", Title = "Revolution" }, - new Album { Quantity = 50, Artist = "The Dangerous Summer", Title = "The Dangerous Summer" }, - new Album { Quantity = 200, Artist = "Depeche Mode", Title = "Spirit" }, - }; - - var discountedAlbums = albums.Where(discountFilterExpression); - - foreach(var album in discountedAlbums) - { - Console.WriteLine($"Discounted album: {album.Artist} - {album.Title}"); - } - - Console.WriteLine(); - Console.WriteLine("****"); - Console.WriteLine(); - - // approach with manual expression building - Console.WriteLine("Manual expression building approach:"); - var parameter = Expression.Parameter(typeof(Album), "album"); - var comparison = Expression.GreaterThan(Expression.Property(parameter, Type.GetType("ConsoleApp6.Album").GetProperty("Quantity")), Expression.Constant(100)); - var lambda = Expression.Lambda>(comparison, parameter).Compile(); - var discountedAlbums2 = albums.Where(lambda); - - foreach (var album in discountedAlbums2) - { - Console.WriteLine($"Discounted album: {album.Artist} - {album.Title}"); - } - - Console.ReadKey(); + new() { Quantity = 10, Artist = "Betontod", Title = "Revolution" }, + new() { Quantity = 50, Artist = "The Dangerous Summer", Title = "The Dangerous Summer" }, + new() { Quantity = 200, Artist = "Depeche Mode", Title = "Spirit" }, + }; + + foreach (Album album in albums.Where(discountFilterExpression)) + { + Console.WriteLine($"Discounted album: {album.Artist,-20} - {album.Title}"); } - } - public class Album - { - public int Quantity { get; set; } - public string Title { get; set; } - public string Artist { get; set; } + Console.WriteLine("\n****\n"); + + // approach with manual expression building + Console.WriteLine("Manual expression building approach:"); + ParameterExpression parameter = Expression.Parameter( + typeof(Album), "album"); + BinaryExpression comparison = Expression.GreaterThan(Expression.Property( + parameter, + typeof(Album) + .GetProperty(nameof(Album.Quantity))!), + Expression.Constant(100)); + Func lambda = Expression.Lambda>( + comparison, parameter).Compile(); + foreach (Album album in albums.Where(lambda)) + { + Console.WriteLine($"Discounted album: {album.Artist,-20} - {album.Title}"); + } + + _ = Console.ReadKey(); } } + +public class Album +{ + public required int Quantity { get; set; } + public required string Title { get; set; } + public required string Artist { get; set; } +} diff --git a/README.md b/README.md new file mode 100644 index 0000000..3444470 --- /dev/null +++ b/README.md @@ -0,0 +1,44 @@ +Filip Wojcieszyn (aka Filip W) Filip is +- a cloud architect from Zürich +- founder and maintainer of several popular open source projects +- active contributor to the Q# community and a Microsoft Quantum MVP +- specializes in programming language tooling, the C# compiler and quantum computing +- based in Zürich, where he works in the medical industry, for Sonova AG, as an Architect in Research & Development. + +The "Easy way to create a C# lambda expression from a string (with Roslyn)" article on Filip's website +https://www.strathweb.com/2018/01/easy-way-to-create-a-c-lambda-expression-from-a-string-with-roslyn/ +https://github.com/filipw/csharp-string-to-lambda-example + +is backed by the related [filipw/csharp-string-to-lambda-example](https://github.com/filipw/csharp-string-to-lambda-example) repository +also originally released in 2018, with subsequent updates, although main Program.cs code has been unchanged. + +| date | TFM | Microsoft.CodeAnalysis.CSharp.Scripting | +|-|-|-| +| 2018-01-29 | netcoreapp2.0 | 2.6.1 | +| 2018-07-18 | netcoreapp2.0 | 3.2.0-beta4-final | +| 2021-03-24 | netcoreapp3.1 | 3.9.0 | +| 2021-05-21 | netcoreapp3.1 | 3.10.0-2.final | +| 2022-09-19 | net6.0 | 4.4.0-1.final | +| 2023-03-07 | net6.0 | 4.6.0-1.final | + +This PR by Dick Baker (developer in UK) now contributes further updates per C# 12 and .NET 8 + +| date | TFM | Microsoft.CodeAnalysis.CSharp.Scripting | +|-|-|-| +| 2023-03-07 | net8.0 | 4.10.0 | + +FYI there is an excellent "[Expression Trees in C#](https://app.pluralsight.com/library/courses/c-sharp-10-expression-trees/)" course on Pluralsight [original Nov 2022, updated Mar 2024] by [Chris B Behrens](https://app.pluralsight.com/profile/author/chris-behrens) who has authored 69 courses [including 11 now retired] at time of writing this (June 2024). +Current PS subscribers can obtain the [Exercise files](https://app.pluralsight.com/library/courses/c-sharp-10-expression-trees/exercise-files) download that includes both code and .PDF files only +- understanding-where-expressions-come-from-slides.pdf +- understanding-expression-trees-in-c-slides.pdf +- making-expression-trees-work-for-you-slides.pdf +- Course Links.rtf + +where that .rtf file contains several short-links including [one](https://bit.ly/37STNmk) to Filip's article +(no, I couldn't relate that M4 Slide 29 to any slide in the .PDF decks or transcript either!) + +Chris' public repository with code for this course is at https://github.com/FeynmanFan/csharp-expression-trees + +Exploring Filip's website I discovered he has also written a book, released 2022-05-07 +[Introduction to Quantum Computing with Q# and QDK](https://link.springer.com/book/10.1007/978-3-030-99379-5) +so worthwhile to explore both website and book for more great insights !