Add .NET, Kotlin, Java function examples to Functions Guide

[adityaoberai]

Adds a .NET, Kotlin, and Java function examples to the Writing your own Function section in the Functions guide.

[Meldiron]

Screenshots:

[Meldiron]

After applying these, please double-check if they still work. We might have a bug in open-runtimes if these changes don't work. (payload should always default to empty string)

[gewenyu99]

I think this looks alright, I have no comments on the code itself, mainly because I don't know kotlin or C# well. I would think adding some comments might be useful.

It depends on the language, but we should at least comment on what the function is supposed to do in a comment.

[gewenyu99]

I would suggest adding some comments so the code is easier to follow. I say this mostly because I don't know these languages very well, and I subconsciously started looking for a comment.

[adityaoberai]

I would suggest adding some comments so the code is easier to follow. I say this mostly because I don't know these languages very well, and I subconsciously started looking for a comment.

That's actually not been across any of the samples. Maybe something we should have across them all?

[adityaoberai]

@Meldiron I removed the check for {} with the check for a null payload and got this in each case:

• .NET

• Java

• Kotlin

Could this be the Console sending {} as a default payload if left empty?

[Meldiron]

LGTM

[Meldiron]

@adityaoberai don't worry about '{}' payload, it is a bug in Appwrite. Addressed in this PR: appwrite/appwrite#3367

Payload (should, and) will be empty string if not provided.

[adityaoberai]

Sure 👍
I have updated the function examples to check the payload for an empty string only.

[adityaoberai]

I think this looks alright, I have no comments on the code itself, mainly because I don't know kotlin or C# well. I would think adding some comments might be useful.

It depends on the language, but we should at least comment on what the function is supposed to do in a comment.

@gewenyu99 maybe this could be an entirely separate issue of it's own that we could work on? I'll go ahead and create one in the meantime.

[christyjacob4]

Suggested change

	<p>Include a <b>Function.csproj</b> file in your function, Appwrite handles the rest!</p>
	<p>Include a <b>Function.csproj</b> file with your function - Appwrite handles the rest!</p>

I saw that some of the existing functions also use in and a comma.
Please update those as well

[adityaoberai]

Will do that 👍
I was following suit, to be honest.

[christyjacob4]

Suggested change

	<p>Include a <b>deps.gradle</b> file in your function, Appwrite handles the rest!</p>
	<p>Include a <b>deps.gradle</b> file with your function - Appwrite handles the rest!</p>

Likewise

[christyjacob4]

Suggested change

	<p>Include a <b>deps.gradle</b> file in your function, Appwrite handles the rest!</p>
	<p>Include a <b>deps.gradle</b> file in your function - Appwrite handles the rest!</p>

[christyjacob4]

Please address the comments

[adityaoberai]

@christyjacob4 made the grammatical (+ a couple of other minor ones I saw)