date calculation bug (or me?:-)

[barca0]

lua:

local now = date.now ()

local c = now
local d = now

print ('c:') print (c)

c.Minute = c.Minute + 10

print ('c before:') print (c)


d.Minute = d.Minute - 10

print ('c after:') print (c)

console:


c:
20.04.2006/20:42:43
c before:
20.04.2006/20:52:43
c after:
20.04.2006/20:42:43


now how on earth can "c" change after an operation on "d" ???

txs in advance

barca

[Rob H]

c and d both reference the same table

[barca0]

....mhhh, actually I am a marketing guy. can you give me a hint on how to make two different variables out of a time in order to have a timespan?

[birty]

d = table.copy (c)

[barca0]

thanks birty! but since it did not let me calculate with it, I just derived the variables from the origin. it´s to have day, evening, night, etc.


local beforesunrise = date:new (sunrise)
local aftersunrise = date:new (sunrise)
beforesunrise.Minute = beforesunrise.Minute -30
aftersunrise.Minute = aftersunrise.Minute + 50

[Todd Reed]

I can't even get the date:now() function to work??



local d = date:now()
print (d)


Gives me...



[string "Todd's:\X10\Scripting"]:1: attempt to call field `now' (a nil value)
stack traceback:
[string "Todd's:\X10\Scripting"]:1: in main chunk

:cry:

[Promixis]

make sure you require the date library using

require 'date' at the top of this file.

[Todd Reed]

require("date")
d = date:now ()
print (d)


no change...

I am not liking the new Lua... :evil:

[Promixis]

something has gone wrong with your install OR you are overwritting the date library with your own variable.

[Todd Reed]

Restarted Girder, and ran that code first thing!

Yep, I must be using 'date' somewhere else...

Got to be carefull!!

:roll:

[Promixis]

Restarted Girder, and ran that code first thing!

Yep, I must be using 'date' somewhere else...

Got to be carefull!!

:roll:
yup, try to never ever ever use global variables...