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s1 = "The quick brown fox jumps over the lazy dog α,β,γ"
# [search]({AbstractString,AbstractString}) returns the first index of a char
i = findfirst(isequal('b'), s1)
#> 11
# the second argument is equivalent to the second argument of split, see below
# or a range if called with another string
r = findfirst("brown", s1)
#> 11:15
# string [replace]({AbstractString,Pair}) is done thus:
r = replace(s1, "brown" => "red")
show(r); println()
#> "The quick red fox jumps over the lazy dog α,β,γ"
# search and replace can also take a regular expressions by preceding the string with 'r'
r = findfirst(r"b[\w]*n", s1)
#> 11:15
# again with a regular expression
r = replace(s1, r"b[\w]*n" => "red")
show(r); println()
#> "The quick red fox jumps over the lazy dog α,β,γ"
# there are also functions for regular expressions that return RegexMatch types
# [match]( scans left to right for the first match (specified starting index optional)
r = match(r"b[\w]*n", s1)
#> RegexMatch("brown")
# RegexMatch types have a property match that holds the matched string
show(r.match); println()
#> "brown"
# [eachmatch]( returns an iterator over all the matches
r = eachmatch(r"[\w]{4,}", s1)
for i in r print("\"$(i.match)\" ") end
#> "quick" "brown" "jumps" "over" "lazy"
r = collect(m.match for m = eachmatch(r"[\w]{4,}", s1))
#> SubString{String}["quick", "brown", "jumps", "over", "lazy"]
# a string can be repeated using the [repeat]( function,
# or more succinctly with the [^ syntax](^-Tuple{AbstractString,Integer}):
r = "hello "^3
show(r); println() #> "hello hello hello "
# the [strip]( function works the same as python:
# e.g., with one argument it strips the outer whitespace
r = strip("hello ")
show(r); println() #> "hello"
# or with a second argument of an array of chars it strips any of them;
r = strip("hello ", ['h', ' '])
show(r); println() #> "ello"
# (note the array is of chars and not strings)
# similarly [split]( works in basically the same way as python:
r = split("hello, there,bob", ',')
show(r); println() #> SubString{String}["hello", " there", "bob"]
r = split("hello, there,bob", ", ")
show(r); println() #> SubString{String}["hello", "there,bob"]
r = split("hello, there,bob", [',', ' '], limit=0, keepempty=false)
show(r); println() #> SubString{String}["hello", "there", "bob"]
# (the last two arguements are limit and include_empty, see docs)
# the opposite of split: [join]( is simply
r = join(collect(1:10), ", ")
println(r) #> 1, 2, 3, 4, 5, 6, 7, 8, 9, 10