René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"A dictionary type that only implements the generic IDictionary interface doesn't support dot notation (property-access syntax)","articleBody":"### Prerequisites\r\n\r\n- [X] Write a descriptive title.\r\n- [X] Make sure you are able to repro it on the [latest released version](https://github.com/PowerShell/PowerShell/releases)\r\n- [X] Search the existing issues.\r\n- [X] Refer to the [FAQ](https://github.com/PowerShell/PowerShell/blob/master/docs/FAQ.md).\r\n- [X] Refer to [Differences between Windows PowerShell 5.1 and PowerShell](https://docs.microsoft.com/powershell/scripting/whats-new/differences-from-windows-powershell).\r\n\r\n### Steps to reproduce\r\n\r\nRelated:\r\n* #15204\r\n\r\n`[Tomlyn.Model.TomlTable]`, from the [Tomlyn package](https://github.com/toml-lang/toml),  is an example of a type that implements ``IDictionary`2``, but not also its non-generic counterpart, `IDictionary`.\r\n\r\nSeemingly, this prevents use of dot notation (property-access syntax via the member-access operator) to access the dictionary's entries.\r\n\r\n```powershell\r\n# Determine the package's local installation location.\r\n# If it isn't installed, install it first, in the current user's scope.\r\nwhile (-not ($installDir = (Get-Package -ErrorAction Ignore -ProviderName NuGet Tomlyn).Source)) {\r\n  $null = Install-Package -Scope CurrentUser -ErrorAction Stop -ProviderName NuGet Tomlyn\r\n}\r\n\r\n# Load the package's assembly into the session.\r\nAdd-Type -ErrorAction Stop -LiteralPath (Join-Path $installDir '../lib/netstandard2.0/Tomlyn.dll')\r\n\r\n# Define a sample TOML string to parse.\r\n$tomlStr = @'\r\nfoo = \"bar\"\r\n'@\r\n\r\n# Parse the TOML string into an object mod)el (nested dictionaries).\r\n$tomlTable = [Tomlyn.Toml]::ToModel($tomlStr)\r\n\r\n# Output the global section's 'foo' value,\r\n# first via an indexer, then via dot notation.\r\n$tomlTable['foo'], $tomlTable.foo | ForEach-Object { \"[$_]\" }\r\n```\r\n\r\n### Expected behavior\r\n\r\n```console\r\n[bar]\r\n[bar]\r\n```\r\n\r\n\r\n### Actual behavior\r\n\r\n```console\r\n[bar]\r\n[]\r\n```\r\n\r\n\r\n### Error details\r\n\r\n_No response_\r\n\r\n### Environment data\r\n\r\n```powershell\r\nPowerShell Core 7.3.0-preview.3\r\n```\r\n\r\n\r\n### Visuals\r\n\r\n_No response_","author":{"url":"https://github.com/mklement0","@type":"Person","name":"mklement0"},"datePublished":"2022-04-25T02:06:08.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/17190/PowerShell/issues/17190"}