A rewrite of the hot score algorithm in Julia

hot_score.jl

# The epoch seconds when the algorithm is implemented
const SET_TIME = 1403975999.39

function hot(score, created, comments, user_rep)
    # To make the score scale smaller
    score = log10(abs(score))
    if score > 0
        sign = 1
    elseif score < 0
        sign = -1
    else
        sign = 0
    end
    
    seconds_since = created - SET_TIME
    
    return round( (score * sign + seconds_since + comments + user_rep), 5 )
end