void writeln(
[Object obj = ""]
)

Converts obj to a String by invoking Object.toString and writes the result to this, followed by a newline.

This operation is non-blocking. See flush or done for how to get any errors generated by this call.

Source

/**
 * Converts [obj] to a String by invoking [Object.toString] and
 * writes the result to `this`, followed by a newline.
 *
 * This operation is non-blocking. See [flush] or [done] for how to get any
 * errors generated by this call.
 */
void writeln([Object obj = ""]);