Pavlo Voznenko pvoznenko

Ad hoc polymorphism in Scala with Type Classes

Below you can find example of the ad hoc polymorohism in Scala.

How to go through json object and change values with Circe in Scala

Small gist with some demo trait that shows an example on how to loop through json object and change values with circe in Scala.

Code example you can find below at circe-loop-json-object-example.scala.

The input JSON for test is kinda in in DynamoDB dump format:

Assuming you have multiple Heroku apps and Git remote like so:

development https://git.heroku.com/xxx.git (fetch)
development https://git.heroku.com/xxx.git (push)
origin      [email protected]:xxx/xxx.git  (fetch)
origin      [email protected]:xxx/xxx.git  (push)
production  https://git.heroku.com/xxx.git (fetch)
production  https://git.heroku.com/xxx.git (push)
staging https://git.heroku.com/xxx.git (fetch)

	db.messages.find({
	"headers.Message-ID": "<8147308.1075851042335.JavaMail.evans@thyme>"
	});

	db.messages.update({
	"headers.Message-ID": "<8147308.1075851042335.JavaMail.evans@thyme>"
	}, { $push: { "headers.To": "[email protected]" } });

	db.albums.ensureIndex( {"images" : 1} );

	db.albums.aggregate(
	{ $unwind : "$images" },
	{$group: { _id:null, images: {$addToSet:"$images"}}}
	).forEach(function(doc){
	db.images.remove({_id: {$nin: doc.images}});
	// var kittens = db.images.find({tags: "kittens", _id: {$in: doc.images}});
	// print(kittens.count());
	});