This post is based on Ballerina Swan Lake Update 5 Ballerina does not have exceptions. It has a separate error basic type which is used to indicate errors in a program. With the separate error type, errors in Ballerina are explicit and pretty much impossible to ignore by design. …

Ballerina provides first-class support for immutability. Immutability in Ballerina is deep; a value that is immutable is guaranteed to hold/refer to only immutable values. In other words, a value accessed via an immutable value is also guaranteed to be immutable. Immutability in the type system can be leveraged to provide…

Among Ballerina’s many features that make working with network interactions and data easy, a key highlight is its native support for JSON, with the json type being a built-in type. JSON in Ballerina The json type represents the union of ()|boolean|int|float|decimal|string|json[]|map<json>. map<json> specifically represents a JSON object, which is basically a collection of…

In the previous posts we looked into the concept of errors in Ballerina and related actions. Part I — introduction to the error type and check, panic, checkpanic and trap. Part II — user-defined errors, immutability, type test, etc. In this post we will be looking at error binding patterns. Error Binding Patterns …

In the previous post we looked into the basics of errors and error handling in Ballerina, including the error type, creating error values, panic, trap, check, checkpanic, etc. In this post we will be looking at a bit more advanced concepts, including defining and using custom error types immutability of…

NOTE: This blog is based on an older version of Ballerina and is therefore, incompatible with newer/current versions of Ballerina. An updated version of this blog is now available as a Stack Overflow article and a Medium blog. Errors in Ballerina are quite explicit and pretty much impossible to ignore…

Today we came across a use case where it was required to convert data in a CSV file to JSON format. Say I have the following CSV file (data modified a bit from a BBE):

Ballerina, a programming language primarily targeting network-distributed applications, just hit 1.0! Among the numerous features that make Ballerina attractive, ranked high up there are arguably its native support for JSON and its type-safety. …

The latest release of Ballerina, Ballerina 0.990.0, introduced immutable/read-only values. The main motivation behind introducing immutable values, was to allow safe sharing of values between concurrently executing segments of code. Ballerina 0.990.0 was a major release that introduced a significant number of new features and changes to the language. Do…