574 41.11 Missing Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 591 41.12 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 594 in the process. To prevent old from being exported, set export_old to false.CHAPTER 41. ESSENTIALS 591 Julia 1.5 As of Julia 1.5, functions defined by @deprecate do not print warning when julia is run

574 41.11 Missing Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 591 41.12 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 594 in the process. To prevent old from being exported, set export_old to false.CHAPTER 41. ESSENTIALS 591 Julia 1.5 As of Julia 1.5, functions defined by @deprecate do not print warning when julia is run

julia> fieldnames(typeof(1+im)) (:re, :im) source Base.fieldname – Function.CHAPTER 42. ESSENTIALS 591 fieldname(x::DataType, i::Integer) Get the name of field i of a DataType. Examples julia> fieldname(Rational

julia> fieldnames(typeof(1+im)) (:re, :im) source Base.fieldname – Function.CHAPTER 42. ESSENTIALS 591 fieldname(x::DataType, i::Integer) Get the name of field i of a DataType. Examples julia> fieldname(Rational

julia> fieldnames(typeof(1+im)) (:re, :im) source Base.fieldname – Function.CHAPTER 42. ESSENTIALS 591 fieldname(x::DataType, i::Integer) Get the name of field i of a DataType. Examples julia> fieldname(Rational

missing julia> isequal(missing, missing) true source Base.isless – Function.CHAPTER 43. ESSENTIALS 591 isless(x, y) Test whether x is less than y, according to a fixed total order (defined together with

than that provided as a generic fallback (based on isnan, signbit, and ==).CHAPTER 43. ESSENTIALS 591 Examples julia> isequal([1., NaN], [1., NaN]) true julia> [1., NaN] == [1., NaN] false julia>

ordering methods that can be used in sorting and related functions. ExamplesCHAPTER 43. ESSENTIALS 591 julia> isless(1, 3) true julia> isless("Red", "Blue") false source Base.isunordered – Function

ordering methods that can be used in sorting and related functions. ExamplesCHAPTER 43. ESSENTIALS 591 julia> isless(1, 3) true julia> isless("Red", "Blue") false source Base.isunordered – Function

be :not_atomic if specified. See also getproperty and fieldnames. ExamplesCHAPTER 42. ESSENTIALS 591 julia> a = 1//2 1//2 julia> getfield(a, :num) 1 julia> a.num 1 julia> getfield(a, 1) 1 source