method

puts

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What's this?

puts(*args) public

Writes the given objects to ios as with IO#print. Writes a record separator (typically a newline) after any that do not already end with a newline sequence. If called with an array argument, writes each element on a new line. If called without arguments, outputs a single record separator.

$stdout.puts("this", "is", "a", "test")

produces:

this
is
a
test

Show source

VALUE
rb_io_puts(int argc, VALUE *argv, VALUE out)
{
    int i;
    VALUE line;

    /* if no argument given, print newline. */
    if (argc == 0) {
        rb_io_write(out, rb_default_rs);
        return Qnil;
    }
    for (i=0; i<argc; i++) {
        if (TYPE(argv[i]) == T_STRING) {
            line = argv[i];
            goto string;
        }
        line = rb_check_array_type(argv[i]);
        if (!NIL_P(line)) {
            rb_exec_recursive(io_puts_ary, line, out);
            continue;
        }
        line = rb_obj_as_string(argv[i]);
      string:
        rb_io_write(out, line);
        if (RSTRING_LEN(line) == 0 ||
            !str_end_with_asciichar(line, '\n')) {
            rb_io_write(out, rb_default_rs);
        }
    }

    return Qnil;
}

puts

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