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make replace with count=0 a no-op #22325

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merged 13 commits into from
Jul 4, 2017
+45 −7
Merged

make replace with count=0 a no-op #22325

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7688517
replace with count=0 is a no-op
rfourquet Jun 10, 2017
5b99e0a
document the behavior for negative count
rfourquet Jun 10, 2017
2f26043
remove default in the docstring
rfourquet Jun 10, 2017
d387b31
use typemax(Int) instead of -1 for unlimited (nalimilan)
rfourquet Jun 11, 2017
bd0079a
deprecate when count < 0 and add NEWS.md entry
rfourquet Jun 11, 2017
5d03ce1
avoid error when a number bigger than typemax(Int) is passed as count…
rfourquet Jun 11, 2017
06a8cfd
add another commented method to be uncommented when replace removed f…
rfourquet Jun 11, 2017
06a7706
check replace is implemented for GenericString (nalimilan)
rfourquet Jun 12, 2017
d77b51a
remove un-needed Base. prefix
rfourquet Jun 12, 2017
4f60ef7
add missing backtick (nalimilan)
rfourquet Jun 12, 2017
981e8da
remove unecessary `Base.` (tkelman) and cancel conversion to Int (nal…
rfourquet Jun 13, 2017
4405d63
improve TODO notes (StefanKarpinski)
rfourquet Jun 15, 2017
ff0b955
cross-ref search (tkelman)
rfourquet Jul 4, 2017
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use typemax(Int) instead of -1 for unlimited (nalimilan)
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@rfourquet
rfourquet committed Jul 4, 2017
commit d387b316fb2141b39eabbc0a3986737073d73ffd
13 changes: 7 additions & 6 deletions base/strings/util.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -359,8 +359,9 @@ _replace(io, repl, str, r, pattern) = print(io, repl)
_replace(io, repl::Function, str, r, pattern) =
print(io, repl(SubString(str, first(r), last(r))))

function replace(str::String, pattern, repl, limit::Integer)
function replace(str::String, pattern, repl, limit::Int)
limit == 0 && return str
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While you're at it, maybe rename the argument so that it's consistent with the docstring (or change the docstring)?

limit < 0 && throw(DomainError())
n = 1
e = endof(str)
i = a = start(str)
Expand Down Expand Up @@ -393,18 +394,18 @@ function replace(str::String, pattern, repl, limit::Integer)
end

"""
replace(string::AbstractString, pat, r, [n::Integer])
replace(string::AbstractString, pat, r, [count::Integer])

Search for the given pattern `pat`, and replace each occurrence with `r`.
If `n` is provided, replace at most `n` occurrences (if `n < 0`, replace
all occurrences). As with search, the second argument may be a
If `count` is provided, replace at most `count` occurrences.
As with search, the second argument may be a
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search would be good as a cross reference

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Done.

single character, a vector or a set of characters, a string, or a regular expression. If `r`
is a function, each occurrence is replaced with `r(s)` where `s` is the matched substring.
If `pat` is a regular expression and `r` is a `SubstitutionString`, then capture group
references in `r` are replaced with the corresponding matched text.
"""
replace(s::AbstractString, pat, f, n::Integer) = replace(String(s), pat, f, n)
replace(s::AbstractString, pat, r) = replace(s, pat, r, -1)
replace(s::AbstractString, pat, f, n::Integer=typemax(Int)) =
replace(String(s), pat, f, Int(n))

# hex <-> bytes conversion

Expand Down