Declare User Defined Data Types for Powerapps Canvas

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Posted on by qwertyuiop

Hi,

I saw in the latest update that powerapps supports custom data types to be used in UDFs. Can you help describe how to declare them

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Experimental features

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adithyaselv Microsoft Employee on at

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Hi,

You can declare a user-defined time in the Formulas property similar to UDF and then use it in UDF . Please find a simple example below.

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//Record type

Point := Type({x: Number, y: Number});

// UDF to compute distance between two points

distance(a:Point,b:Point):Number = Sqrt(Power(b.x - a.x, 2) + Power(b.y-a.y, 2));

//Table type

Points := Type([Point]);

// UDF to check if the given table of points contains a particular point

containsPoint(points: Points, target:Point): Boolean = CountIf(points, ThisRecord.x = target.x && ThisRecord.y = target.y) > 0;

----

notice that you need to use := to declare user-defined type. Type is a special function used to construct a type definition.

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adithyaselv Microsoft Employee on at

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Hi,

You can declare a user-defined time in the Formulas property similar to UDF and then use it in UDF . Please find a simple example below.

-----

//Record type

Point := Type({x: Number, y: Number});

// UDF to compute distance between two points

distance(a:Point,b:Point):Number = Sqrt(Power(b.x - a.x, 2) + Power(b.y-a.y, 2));

//Table type

Points := Type([Point]);

// UDF to check if the given table of points contains a particular point

containsPoint(points: Points, target:Point): Boolean = CountIf(points, ThisRecord.x = target.x && ThisRecord.y = target.y) > 0;

----

notice that you need to use := to declare user-defined type. Type is a special function used to construct a type definition.

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IAmIntractable 280 on at

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I don't believe this is a general release feature yet.

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laveudelsilenci 9 on at

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Please, Move this to General. It has not sense Formulas defined functions without defined types.
It is big evolution of PowerApps, to isolate code.
Publish it as preview as soon as possible, it it works perfectly.

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