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How to use variables in the middle of a string?

 
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LastExceed
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PostPosted: Thu Jan 28, 2016 7:23 am    Post subject: How to use variables in the middle of a string? Reply with quote
What I want to do is first giving an integer that is then used inside a string:

Code:
x=1
showMessage('number x is now selected')


This ^ ofcourse does NOT work, it's just showing what I want the result to be like.
I know I can put the number at the end by doing
Code:
x=1
showMessage('you selected number'..x

But I need to know how to use x in the middle of a string (the result needs to be a single string)

How to do that?
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hhhuut
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PostPosted: Thu Jan 28, 2016 7:30 am    Post subject: Reply with quote
Have you tried
Code:
x=1
showMessage('number ' .. x .. ' is now selected')
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LastExceed
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PostPosted: Thu Jan 28, 2016 7:50 am    Post subject: Reply with quote
hhhuut wrote:
Have you tried
Code:
x=1
showMessage('number ' .. x .. ' is now selected')


Thanks!
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Zanzer
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PostPosted: Thu Jan 28, 2016 4:02 pm    Post subject: Reply with quote
Code:
x = 1
y = 1.523
z = "dunno"
showMessage(string.format("number %d is now selected, oh and %0.1f has... %s",x,y,z))
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atom0s
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PostPosted: Thu Jan 28, 2016 5:00 pm    Post subject: Reply with quote
string.format, as Zanzer pointed out, is the best option here for a cleaner and more dynamic building of the result string. For more info on the tokens that can be used with it, check out:
http://www.lua.org/manual/5.3/manual.html#pdf-string.format
http://pubs.opengroup.org/onlinepubs/009695399/functions/sprintf.html

(Be mindful of what the Lua docs say on what is and isn't supported.)
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