Strings

import ballerina/io;

public function main() {
    // String literals use double quotes. You can use usual C escapes such as `\t \n`.
    // Numeric escapes specify Unicode code point using one or more hex digits `\u{H}`.
    string grin = "\u{1F600}";

    // String concatenation uses `+` operator.
    string greeting = "Hello" + grin;

    io:println(greeting);

    // `greeting[1]` accesses character at index 1 (zero-based).
    io:println(greeting[1]);

}

Strings

The string type represents immutable sequence of zero or more Unicode characters. There is no separate character type: a character is represented by a string of length 1. Two string values are == if both sequences have the same characters. You can use <, <=, >, and >= operators on string values and they work by comparing code points. Unpaired surrogates are not allowed.

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Nil

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Booleans and conditionals

import ballerina/io;

public function main() {

    string grin = "\u{1F600}";

String literals use double quotes. You can use usual C escapes such as \t \n. Numeric escapes specify Unicode code point using one or more hex digits \u{H}.

    string greeting = "Hello" + grin;

String concatenation uses + operator.

    io:println(greeting);

    io:println(greeting[1]);

greeting[1] accesses character at index 1 (zero-based).

bal run strings.bal
Hello😀
e