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In C#, it’s just string.IsNullOrEmpty(), so in Power Platform it’s more complex:
It isn’t possible to compare against an empty string, so you need to compare the length of the string:
length(outputs('myString')?['body/Result'])… and compare that with 0. The other condition just compares with null.
You could implement string.IsNullOrWhitespace() by using the trim() function around the string.
In the beginning there was Jack … and Jack had a groove. And from this groove came the groove of all grooves. And while one day viciously throwing down on his box, Jack boldly declared “Let There Be House” and House music was born.
~ Chuck Roberts
Living and working in the Isle of Man, a lovely island nestled in the Irish Sea between Ireland and the UK.
I principally work in the Microsoft stack, particularly the .NET Framework, having worked in Dynamics 365, Power Platform, SharePoint, WCF, Silverlight, WPF, SQL Server, ASP.NET Web Forms, Web Pages, MVC and Web API. Other than Microsoft, I have worked in MySQL, FastAI and PayPal.
Outside of work, I’m a Scout Leader, geeky-type person with interest in Manx Gaelic, Tolkien, film and trains.
Live to work 
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