dictionary, or a list of modules and/or dicts. See UI modules for more details. • websocket_ping_interval: If set to a number, all websockets will be pinged every n seconds. This can help keep the connection websocket_ping_timeout: If the ping interval is set, and the server doesn’t receive a ‘pong’ in this many seconds, it will close the websocket. The default is three times the ping interval, with a minimum of 30 seconds seconds. Ignored if the ping interval is not set. Authentication and security settings: 54 Chapter 6. DocumentationTornado Documentation, Release 6.5.1 • cookie_secret: Used by RequestHandler.get_signed_cookie

dictionary, or a list of modules and/or dicts. See UI modules for more details. websocket_ping_interval: If set to a number, all websockets will be pinged every n seconds. This can help keep the connection websocket_ping_timeout: If the ping interval is set, and the server doesn’t receive a ‘pong’ in this many seconds, it will close the websocket. The default is three times the ping interval, with a minimum of 30 seconds seconds. Ignored if the ping interval is not set. Authentication and security settings: cookie_secret: Used by RequestHandler.get_signed_cookie and set_signed_cookie to sign cookies. key_version: Used

type T, then the three argument method should throw an InexactError. For example, if we have an Interval type which represents a range of possible values similar to https://github.com/Ju- liaPhysics/Measurements following julia> struct Interval{T} min::T max::T end julia> Base.round(x::Interval, r::RoundingMode) = Interval(round(x.min, r), round(x.max, r)) julia> x = Interval(1.7, 2.2) Interval{Float64}(1.7, 2.2) 2) julia> round(x) Interval{Float64}(2.0, 2.0) julia> floor(x) Interval{Float64}(1.0, 2.0) julia> ceil(x) Interval{Float64}(2.0, 3.0) julia> trunc(x) Interval{Float64}(1.0, 2.0)CHAPTER 16. INTERFACES

type T, then the three argument method should throw an InexactError. For example, if we have an Interval type which represents a range of possible values similar to https://github.com/Ju- liaPhysics/Measurements following julia> struct Interval{T} min::T max::T end julia> Base.round(x::Interval, r::RoundingMode) = Interval(round(x.min, r), round(x.max, r)) julia> x = Interval(1.7, 2.2) Interval{Float64}(1.7, 2.2) 2) julia> round(x) Interval{Float64}(2.0, 2.0) julia> floor(x) Interval{Float64}(1.0, 2.0) julia> ceil(x) Interval{Float64}(2.0, 3.0) julia> trunc(x) Interval{Float64}(1.0, 2.0)CHAPTER 16. INTERFACES

type T, then the three argument method should throw an InexactError. For example, if we have an Interval type which represents a range of possible values similar to https://github.com/Ju- liaPhysics/Measurements following julia> struct Interval{T} min::T max::T end julia> Base.round(x::Interval, r::RoundingMode) = Interval(round(x.min, r), round(x.max, r)) julia> x = Interval(1.7, 2.2) Interval{Float64}(1.7, 2.2) 2) julia> round(x) Interval{Float64}(2.0, 2.0) julia> floor(x) Interval{Float64}(1.0, 2.0) julia> ceil(x) Interval{Float64}(2.0, 3.0) julia> trunc(x) Interval{Float64}(1.0, 2.0)CHAPTER 16. INTERFACES

type T, then the three argument method should throw an InexactError. For example, if we have an Interval type which represents a range of possible values similar to https://github.com/Ju- liaPhysics/Measurements following julia> struct Interval{T} min::T max::T end julia> Base.round(x::Interval, r::RoundingMode) = Interval(round(x.min, r), round(x.max, r)) julia> x = Interval(1.7, 2.2) Interval{Float64}(1.7, 2.2) 2) julia> round(x) Interval{Float64}(2.0, 2.0) julia> floor(x) Interval{Float64}(1.0, 2.0) julia> ceil(x) Interval{Float64}(2.0, 3.0) julia> trunc(x) Interval{Float64}(1.0, 2.0)CHAPTER 16. INTERFACES

type T, then the three argument method should throw an InexactError. For example, if we have an Interval type which represents a range of possible values similar to https://github.com/Ju- liaPhysics/Measurements following julia> struct Interval{T} min::T max::T end julia> Base.round(x::Interval, r::RoundingMode) = Interval(round(x.min, r), round(x.max, r)) julia> x = Interval(1.7, 2.2) Interval{Float64}(1.7, 2.2) 2) julia> round(x) Interval{Float64}(2.0, 2.0) julia> floor(x) Interval{Float64}(1.0, 2.0) julia> ceil(x) Interval{Float64}(2.0, 3.0) julia> trunc(x) Interval{Float64}(1.0, 2.0)CHAPTER 16. INTERFACES

type T, then the three argument method should throw an InexactError. For example, if we have an Interval type which represents a range of possible values similar to https://github.com/Ju- liaPhysics/Measurements following julia> struct Interval{T} min::T max::T end julia> Base.round(x::Interval, r::RoundingMode) = Interval(round(x.min, r), round(x.max, r)) julia> x = Interval(1.7, 2.2) Interval{Float64}(1.7, 2.2) 2) julia> round(x) Interval{Float64}(2.0, 2.0) julia> floor(x) Interval{Float64}(1.0, 2.0) julia> ceil(x) Interval{Float64}(2.0, 3.0) julia> trunc(x) Interval{Float64}(1.0, 2.0)CHAPTER 16. INTERFACES

type T, then the three argument method should throw an InexactError. For example, if we have an Interval type which represents a range of possible values similar to https://github.com/Ju- liaPhysics/Measurements following julia> struct Interval{T} min::T max::T end julia> Base.round(x::Interval, r::RoundingMode) = Interval(round(x.min, r), round(x.max, r)) julia> x = Interval(1.7, 2.2) Interval{Float64}(1.7, 2.2) 2) julia> round(x) Interval{Float64}(2.0, 2.0) julia> floor(x) Interval{Float64}(1.0, 2.0) julia> ceil(x) Interval{Float64}(2.0, 3.0) julia> trunc(x) Interval{Float64}(1.0, 2.0)CHAPTER 16. INTERFACES

type T, then the three argument method should throw an InexactError. For example, if we have an Interval type which represents a range of possible values similar to https://github.com/Ju- liaPhysics/Measurements following julia> struct Interval{T} min::T max::T end julia> Base.round(x::Interval, r::RoundingMode) = Interval(round(x.min, r), round(x.max, r)) julia> x = Interval(1.7, 2.2) Interval{Float64}(1.7, 2.2) 2) julia> round(x) Interval{Float64}(2.0, 2.0) julia> floor(x) Interval{Float64}(1.0, 2.0) julia> ceil(x) Interval{Float64}(2.0, 3.0) julia> trunc(x) Interval{Float64}(1.0, 2.0)CHAPTER 16. INTERFACES