Feature Overview
REPLACE() Replaces the specified string with the specified string.
- The first argument string replaces all matches to the second argument string with the third argument string.
- After the fourth and fifth words, you can further specify the search match and the words to be replaced.
- This function consumes 58 Token.
--"str" becomes "string for replace".
str = replace('[test] for replace', '[test]', 'string')
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This function is included in the KNUTIL library.
release note
I think the example with 4 nested calls to replace show the need for a variant replace(string, table)!
That's a pretty decent replace there, @shiftalow. I was seeing if I can make the code smaller with split() - I don't think I can.
You get the medal on this one. Gold star !
Yes, we do. Some projects may require more than one replacement at a time.
We can consider the following multi-replacement versions if needed.
-- table argment version
function replace(s,t)
local a,i=s
for f,r in pairs(t) do
s,a,i=a,'',1
while i<=#s do
if sub(s,i,i+#f-1)~=f then
a..=sub(s,i,i)
i+=1
else
a..=r or ''
i+=#f
end
end
end
return a
end
local str="you got a banana."
.."you found an apple."
.."you ate an orange."
str=replace(str
,{
banana="\fa[bananaノ\vtノ]\f6"
,apple="\f8[apple●\vvイ]\f6"
,orange="\f9[orangeう\vz𝘭]\f6"
,["."]=".\n"
}
)
?str
|
-- tuple argments version
function replace(s,f,r,...)
local a,i='',1
while i<=#s do
if sub(s,i,i+#f-1)~=f then
a..=sub(s,i,i)
i+=1
else
a..=r or ''
i+=#f
end
end
return ... and replace(a,...) or a
end
local str="you got a banana."
.."you found an apple."
.."you ate an orange."
str=replace(str
,"banana","\fa[bananaノ\vtノ]\f6"
,"apple","\f8[apple●\vvイ]\f6"
,"orange","\f9[orangeう\vz𝘭]\f6"
,".",".\n"
)
?str |
Thanks for the Gold star!
I too believe that if replace() using split() could be built up, it would suppress Token considerably.
But, hmmm. I recall the problem of not being able to split on delimiters of more than 2 characters.
I updated to REPLACE() ver 0.2!!
- multiple substitutions can be made with a single function call.
I thought that perhaps multiple substitutions would be used more frequently.
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