From 77f0219cc6fd64f9c4dbd3007fa395b2242a6e49 Mon Sep 17 00:00:00 2001 From: Ratan Date: Sat, 10 Oct 2015 12:10:27 -0400 Subject: change String to AbstractString as per 0.4 spec --- julia.html.markdown | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'julia.html.markdown') diff --git a/julia.html.markdown b/julia.html.markdown index 66329feb..7ca2d492 100644 --- a/julia.html.markdown +++ b/julia.html.markdown @@ -78,7 +78,7 @@ false 1 < 2 < 3 # => true 2 < 3 < 2 # => false -# Strings are created with " +# AbstractStrings are created with " "This is a string." # Character literals are written with ' @@ -314,7 +314,7 @@ end # For loops iterate over iterables. -# Iterable types include Range, Array, Set, Dict, and String. +# Iterable types include Range, Array, Set, Dict, and AbstractString. for animal=["dog", "cat", "mouse"] println("$animal is a mammal") # You can use $ to interpolate variables or expression into strings @@ -550,13 +550,13 @@ super(Any) # => Any # <: is the subtyping operator type Lion <: Cat # Lion is a subtype of Cat mane_color - roar::String + roar::AbstractString end # You can define more constructors for your type # Just define a function of the same name as the type # and call an existing constructor to get a value of the correct type -Lion(roar::String) = Lion("green",roar) +Lion(roar::AbstractString) = Lion("green",roar) # This is an outer constructor because it's outside the type definition type Panther <: Cat # Panther is also a subtype of Cat -- cgit v1.2.3 From d673dd62afc5a989b50001b29a59c813643e393f Mon Sep 17 00:00:00 2001 From: Ratan Date: Sat, 10 Oct 2015 14:34:55 -0400 Subject: try to make string change clearer --- julia.html.markdown | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) (limited to 'julia.html.markdown') diff --git a/julia.html.markdown b/julia.html.markdown index 7ca2d492..c5089dc3 100644 --- a/julia.html.markdown +++ b/julia.html.markdown @@ -78,13 +78,16 @@ false 1 < 2 < 3 # => true 2 < 3 < 2 # => false -# AbstractStrings are created with " +# Strings are created with " "This is a string." +# Julia has several types of strings, including ASCIIString and UTF8String. +# More on this in the Types section. + # Character literals are written with ' 'a' -# A string can be indexed like an array of characters +# Some strings can be indexed like an array of characters "This is a string"[1] # => 'T' # Julia indexes from 1 # However, this is will not work well for UTF8 strings, # so iterating over strings is recommended (map, for loops, etc). @@ -537,6 +540,17 @@ subtypes(Number) # => 6-element Array{Any,1}: # Real subtypes(Cat) # => 0-element Array{Any,1} +# AbstractString, as the name implies, is also an abstract type +subtypes(AbstractString) # 8-element Array{Any,1}: + # Base.SubstitutionString{T<:AbstractString} + # DirectIndexString + # RepString + # RevString{T<:AbstractString} + # RopeString + # SubString{T<:AbstractString} + # UTF16String + # UTF8String + # Every type has a super type; use the `super` function to get it. typeof(5) # => Int64 super(Int64) # => Signed @@ -546,6 +560,10 @@ super(Number) # => Any super(super(Signed)) # => Number super(Any) # => Any # All of these type, except for Int64, are abstract. +typeof("fire") # => ASCIIString +super(ASCIIString) # => DirectIndexString +super(DirectIndexString) # => AbstractString +# Likewise here with ASCIIString # <: is the subtyping operator type Lion <: Cat # Lion is a subtype of Cat -- cgit v1.2.3