Boolean Lang Library

The Ballerina Boolean lang library ( ballerina\lang.boolean ) provides functions that operate on a boolean value. As of now, it has only the fromString function.

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import ballerina/io;

public function main() returns error? {

    boolean t1 = check boolean:fromString("true");
    boolean f1 = check boolean:fromString("false");

    io:println("t1:", t1);
    io:println("f1:", f1);
}

t1:true
f1:false

Ballerina 2201.6.0 (Swan Lake Update 6)

// Partial Code. Change View  to see full code.
public function main() returns error? {

    boolean t1 = check boolean:fromString("true");
    boolean f1 = check boolean:fromString("false");
}

// Highlights Only. Change View  to see full code.
boolean t1 = check boolean:fromString("true");
boolean f1 = check boolean:fromString("false");

💡 boolean is a keyword in Ballerina, and it is a pre-defined prefix. Therefore, you can call boolean functions with the prefix even without an import declaration.