[API proposal] "Implicit" property for ArgumentResult just like OptionResult has

OptionResulthas an Implicit property:

command-line-api/src/System.CommandLine/Parsing/OptionResult.cs

Lines 32 to 36 in 7bb08a6

    
           /// <summary> 
        
           /// Indicates whether the result was created implicitly and not due to the option being specified on the command line. 
        
           /// </summary> 
        
           /// <remarks>Implicit results commonly result from options having a default value.</remarks> 
        
           public bool Implicit => IdentifierToken is null || IdentifierToken.Implicit;

Since arguments can also have a DefaultValueFactory like options, it would make sense for ArgumentResult to also have an Implicit property like OptionResult.

Tangent: I don't know about the naming conventions and whether the property name is already locked in, but for a boolean read-only property like that, wouldn't a name like IsImplicit be more suitable?

Tangent: I don't know about the naming conventions and whether the property name is already locked in, but for a boolean read-only property like that, wouldn't a name like IsImplicit be more suitable?

Implicit was recommended during API review over IsImplicit. This is aligned to the .NET naming guidelines though it's more of a suggestion than a rule. https://learn.microsoft.com/en-us/dotnet/standard/design-guidelines/names-of-type-members#names-of-properties

fix dotnet#2622: add ArgumentResult.Implicit property

fix dotnet#2622: add ArgumentResult.Implicit property (dotnet#2625)

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[API proposal] "Implicit" property for ArgumentResult just like OptionResult has #2622

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	/// <summary>
	/// Indicates whether the result was created implicitly and not due to the option being specified on the command line.
	/// </summary>
	/// <remarks>Implicit results commonly result from options having a default value.</remarks>
	public bool Implicit => IdentifierToken is null \|\| IdentifierToken.Implicit;

[API proposal] "Implicit" property for ArgumentResult just like OptionResult has #2622

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jonsequitur commented on Jul 8, 2025

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