Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Create a file using vim and run the hello.bal command:"

A block of code is set as follows:

fn main()
{
panic!("Something is wrong... Check for Errors");
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

import ballerina/config;
import ballerina/io;
import wso2/twitter;
endpoint http:Listener listener {
port:9090
}

Any command-line input or output is written as follows:

$ apex deploy auth
$ apex deploy auth api

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "We can click on Istio Mesh Dashboard to see the global request volume and look at our success and failure rate."