rePS

0.1.0

Exercises/Core/core-convert-boolean/exercise.psd1

                                @{

    Id           = 'core-convert-boolean'

    Title        = 'Parse a boolean'

    Topic        = 'Core'

    Level        = 2

    Platforms    = @('Windows', 'Linux', 'MacOS')

    Tags         = @('types', 'switch', 'errors')

    FunctionName = 'ConvertTo-Boolean'

    Author       = 'rePS'

    Prompt       = @'

[bool]'false' is $true in PowerShell, because any non-empty string casts to $true.

Write ConvertTo-Boolean so it parses -Value properly (case-insensitive, trimmed):

  'true', 'yes', 'y', '1', 'on'   -> $true

  'false', 'no', 'n', '0', 'off'  -> $false

  anything else                   -> throw an error

    ConvertTo-Boolean -Value ' No '   # False

'@

    Hints        = @(

        'Trim the input first: $Value.Trim().'

        'switch is case-insensitive by default and can match several values per clause: { $_ -in ''true'',''yes'' }'

        'Use throw in the default branch.'

    )

}