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authorven <vendethiel@hotmail.fr>2015-10-10 20:36:32 +0200
committerven <vendethiel@hotmail.fr>2015-10-10 20:36:32 +0200
commitd6a1385e6693a33cb91caee567a9a7e23cc8827a (patch)
tree3c47ca5662577d2da7f842b31fe415d62a86063a
parentf7602bdb05845fb5682e9aa427f17bf1a84675cb (diff)
parentd673dd62afc5a989b50001b29a59c813643e393f (diff)
Merge pull request #1447 from RatanRSur/master
change deprecated String type to AbstractString as per 0.4 spec
-rw-r--r--julia.html.markdown26
1 files changed, 22 insertions, 4 deletions
diff --git a/julia.html.markdown b/julia.html.markdown
index 66329feb..c5089dc3 100644
--- a/julia.html.markdown
+++ b/julia.html.markdown
@@ -81,10 +81,13 @@ false
# 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).
@@ -314,7 +317,7 @@ 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
@@ -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
@@ -546,17 +560,21 @@ 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
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