![]() zett42 has generalized the approach above to create a general-purpose.Note: You cannot scope Update-TypeData calls, which invariably take effect session-globally, so it's best to remove the override again with Remove-TypeData and restore any preexisting type data, if any, as shown above. MemberType ScriptMethod -MemberName ToString ` Update-TypeData -TypeName System.Boolean ` # all-lowercase representation of the instance at hand. # Add a ScriptMethod member named 'ToString' that outputs an $prevTypeData = Get-TypeData -TypeName System.Boolean ToString() method of (System.Boolean) instances: However, with implicit stringification of Booleans, as happens during for-display formatting, it does work: # Override the. ToString() override is not honored when you cast an instance to (e.g., $true) or when you use it in an expandable string (e.g, "$true") NET types, but there is a limitation due to a bug - reported in GitHub issue #14561 - present up to at least PowerShell 7.2.2: Update-TypeData can be used to override the members of arbitrary. Preferably, only modify the display formatting of values, without needing to modify the data, as zett42 suggests. This answer shows how to walk a object graph returned by ConvertFrom-Json and update its (leaf) properties.Modify the data, by replacing the Boolean values with their desired string representations: If you want to apply the all-lowercase representation automatically to all Booleans, you have two options: ToLower() on it: PS> "$true".ToLower() # In this case, the same as $true.ToString().ToLower() ToString().ToLower(), or, for brevity, use an expandable string and call. If you need an all-lowercase representation, call. ToString() method in order to obtain a string representation, and that string representation happens to start with an uppercase letter: PS> $true Printing this value to the console (host) effectively calls its. The representation of this value in PowerShell is $true. NET Boolean ( System.Boolean, represented as in PowerShell). Leaving that aside, ConvertFrom-Json converts a true JSON value - a Boolean - into the equivalent. Generally, you mustn't use $input as a custom variable, because it is an automatic variable managed by PowerShell.
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