Use of Complex Syntex

[aieask]

In Day 11, I am reading design at line 43 to 44 it says,

// Valid when count greater than 0
assign valid_o = | count_ff;

What does | count_ff mean?

[raulbehl]

The |<sig> is the reduced-or operator in Verilog/SystemVerilog. When applied on a vector it would simply OR all of the bits of the vector together to produce a 1-bit output. Please see this link for more information

[aieask]

Thanks for the answer Rahul !!