How to copy single std_logic to a std_logic_vector? i.e copy 1 bit to multiple bits

[matrixofdynamism]

I want to copy a single bit to an std_logic_vector so I have;

din : std_logic_vector(31 downto 0);
dx : std_logic;

Now writing din (31 downto 16) <= dx will not work since they do not have same size. What is the proper way to do this? I am using a loop right now, but is there a more concise way? Does Dout (31 downto 16) <= (13 downto 16 => Din(15)); work?

 

[TrickyDicky]

din(31 downto 16) <= (others => dx);