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Название: Optimalization command to command inside
Отправлено: truefriend-cz от 07 августа 2017, 10:50:28

Hi. I optimalizing code and have question. I can join this two line to one? How?

i = 'image_for_show'

Код:

i = i:gsub('^%l', string.upper) -- first letter upper
i = i:gsub('%_', ' ') -- replace _ to space

Название: Re: Optimalization command to command inside
Отправлено: zed от 07 августа 2017, 14:01:25

I think that it's impossible to join this two operations to one and that you should ask such questions on https://stackoverflow.com/

Название: Re: Optimalization command to command inside
Отправлено: Михаил от 07 августа 2017, 15:38:09

Код:

i = i:gsub('^%l', string.upper):gsub('_', ' ')

Название: Re: Optimalization command to command inside
Отправлено: zed от 07 августа 2017, 15:54:24

Михаил
This is not an optimization. Here is still 2 calls of "gsub".

Название: Re: Optimalization command to command inside
Отправлено: Михаил от 07 августа 2017, 16:07:47

1. The question was: "I can join this two line to one? How?". This is optimization by code lines number that user asks.
2. And at the same time this is optimization by code execution: it removes medium temporary saves/loads from string variable "i".

Название: Re: Optimalization command to command inside
Отправлено: truefriend-cz от 07 августа 2017, 17:38:10

Михаил yes, it is great optimalization. Thank you.

And,.. I can have a condition that would also create a variable?
Equivalent for:

Код:

var = re.find(hc.url, [[\.(htm|html|php|php3|php5|asp|aspx)(\?|$)]], 1)
if var then
    hc.put_msg (1, 'Test ok: '..var)
end

Example idea:
url http://www.domain.tld/index.php

Код:

if re.find(hc.url, [[\.(htm|html|php|php3|php5|asp|aspx)(\?|$)]], 1) then
    --i dont know, maybe return? but i dont know parameters for return in this situation
end

To be output: php

--- --- ---
Example idea/solution from my coding, but not accepted in LUA:

Код:

if var=re.find(hc.url, [[\.(htm|html|php|php3|php5|asp|aspx)(\?|$)]], 1) then
    hc.put_msg (1, 'Test ok: '..var)
end

Код:

if var:re.find(hc.url, [[\.(htm|html|php|php3|php5|asp|aspx)(\?|$)]], 1) then
    hc.put_msg (1, 'Test ok: '..var)
end

Код:

if re.find(hc.url, [[\.(htm|html|php|php3|php5|asp|aspx)(\?|$)]], 1)>>var then
    hc.put_msg (1, 'Test ok: '..var)
end

Код:

for var in re.find(hc.url, [[\.(htm|html|php|php3|php5|asp|aspx)(\?|$)]]) do
    hc.put_msg (1, 'Test ok: '..var)
end

(sorry for maybe stupid idea/question)

Название: Re: Optimalization command to command inside
Отправлено: Михаил от 07 августа 2017, 18:49:19

Lua havn't such syntax. You should write:

Код:

local var = re.find(hc.url, [[\.(htm|html|php|php3|php5|asp|aspx)(\?|$)]], 1)
if var then
    hc.put_msg (1, 'Test ok: '..var)
end

Код:

if re.find(hc.url, [[\.(htm|html|php|php3|php5|asp|aspx)(\?|$)]]) then
    hc.put_msg (1, 'Test ok: '.. re.substr(1))
end

Note that you should use local variables almost everywhere.
"local var" is much preferred then "var"

Название: Re: Optimalization command to command inside
Отправлено: truefriend-cz от 07 августа 2017, 18:56:34

Михаил thank you very much.

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