Lua split string into 2d array in single step

Question

I have the following string

abc=1.2;bcd=2.4;xyz=10.9

I want to split it into the following table

{ {"abc", "1.2}, {"bcd", "2.4"}, {"xyz", "10.9"} }

I am currently doing this by splitting the strings first by ; and then by =.

In PHP I can use the following preg_match pattern to do this in a single step without iteration. Is it possible to do this in Lua?

preg_match_all("/(?:([a-z]+)=([0-9.]+)(?:;|$))/", $a, $match, PREG_SET_ORDER);

lhf · Accepted Answer · 2015-03-05 10:07:55Z

2

Try this:

s="abc=1.2;bcd=2.4;xyz=10.9"

s=s..";"
t={}
for k,v in s:gmatch("(.-)=(.-);") do
    t[#t+1]={k,v}
end

answered Mar 5, 2015 at 10:07

lhf

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3 Comments

Thank you. This is much better than my current solution.

Currently I am using table.insert(t, {k, v}). Is t[#t+1]={k,v} preferred over table.insert?

@JoyceBabu, table.insert is fine.