Quickly list supported API versions for ARM resource types

One of the things that I found the most challenging when learning how to create Resource Manager templates was trying to understand which API versions to use for my resources. The documentation is pretty clear and states that most of the time we should be aiming for the latest API version. It also contains examples showing how to get the information. For example:

((Get-AzureRmResourceProvider -ProviderNamespace Microsoft.Web).ResourceTypes | Where-Object ResourceTypeName -eq sites).ApiVersions

Excellent.. but copying and editing the code every time I wanted to retrieve some information was time-consuming. So to make things easier I threw together a small function that lives in my PowerShell profile. It will return a list of current supported API versions for given resource type (just like the code above). However the main difference is that when I need to query a resource I can just run the following command in my session:

Get-AzureRMResouceTypeAPIVersion -ProviderNamespace "Microsoft.Network" -ResourceTypeName "loadBalancers"

Here is the code:

While the function is nothing special, it demonstrates how building your own tools around existing functionality can speed up your learning and development processes.