Lua lekce 1

Lua 5.2.0  Copyright (C) 1994-2011 Lua.org, PUC-Rio
> 1+1
stdin:1: unexpected symbol near '1'
> =1+1
2
> jmeno=muficek
> =jmeno
nil
> =fhgrgfhg
nil
> jmeno="muficek"
> return jmeno
muficek
> =jmeno>"ahoj"
true
> =28<35
true
> =34<23
false
> =jmeno == "muficek"
true
> return jmeno == "mufic"
false
> return jmeno ~= "mufic"
true
> nasobim3=function(n) return(n*3) end
> nasobim3 (3)
> =nasobim3 (3)
9
> print (nasobim3(5))
15
> print (nasobim3)
function: 0x852e698
> print (nasobim3(jmeno))
stdin:1: attempt to perform arithmetic on local 'n' (a string value)
stack traceback:
	stdin:1: in function 'nasobim3'
	stdin:1: in main chunk
	[C]: in ?
> print(function(n) return(n*3) end)
function: 0x852d2c0
> print(function(n) return(n*3) end (5))
stdin:1: ')' expected near '('
> print((function(n) return(n*3) end) (5))
15
> print (nasobim3(9))
27
> print (n)
nil
> n="prdel"
> print (n)
prdel
> print (nasobim3(9))
27
> print (n)
prdel
> plnolety=function(vek) return(vek<18)
>>
>> )
stdin:3: 'end' expected (to close 'function' at line 1) near ')'
> print (not true)
false
> print not false
stdin:1: '=' expected near 'not'
> print (not false)
true
> print (not 2>1)
stdin:1: attempt to compare number with boolean
stack traceback:
	stdin:1: in main chunk
	[C]: in ?
> print (not (2>1))
false
> print (not (2>1))
false
> plnolety=function(vek) return(vek>=18) end
> print (plnolety(23))
true
> print (plnolety(17.9999)
>> )
false
> for(i=17,19,0.2
stdin:1: <name> expected near '('
> for(i=17,19,0.2)
stdin:1: <name> expected near '('
> for (i in 17,19,0.2)
stdin:1: <name> expected near '('
> for i in 17,19,0.2 do
>> print(i,plnolety(i))
>> end
stdin:1: attempt to call a number value
stack traceback:
	stdin:1: in main chunk
	[C]: in ?
> for (i = 17,19,0.2)
stdin:1: <name> expected near '('
> for i=17,19,0.2
>> for i = 17,19,0.2 do
print(i,plnolety(i))
end
stdin:2: 'do' expected near 'for'
> for i=17,19,0.2
for i in 17,19,0.2 do
print(i,plnolety(i))
end
stdin:2: 'do' expected near 'for'
> for i=17,19,0.2 do print(i,plnolety(i)) end
17	false
17.2	false
17.4	false
17.6	false
17.8	false
18	false
18.2	true
18.4	true
18.6	true
18.8	true
19	true
> for i=17,19,1 do print(i,plnolety(i)) end
17	false
18	true
19	true
> for i=17,19,0.1 do print(i,plnolety(i)) end
17	false
17.1	false
17.2	false
17.3	false
17.4	false
17.5	false
17.6	false
17.7	false
17.8	false
17.9	false
18	true
18.1	true
18.2	true
18.3	true
18.4	true
18.5	true
18.6	true
18.7	true
18.8	true
18.9	true
> twilight=function(vek) return((vek>=8) and (vek<=15)) end
> print (twilight(13))
true
> for i=7,17,0.5 do print(i,twilight(i)) end
7	false
7.5	false
8	true
8.5	true
9	true
9.5	true
10	true
10.5	true
11	true
11.5	true
12	true
12.5	true
13	true
13.5	true
14	true
14.5	true
15	true
15.5	false
16	false
16.5	false
17	false
> print ({})
table: 0x852f190
> tabulka = {100,200,300,400,500}
> =tabulka
table: 0x852f3e0
> dofile("zaklad.lua")
{
   [1] = 1
   [2] = 2
   [3] = 3
   [4] = 4
   [5] = 5
   [6] =
      {
         [1] = "a"
         [2] = "b"
      }
   [7] = 7
   [8] = 8
   fn = function: 0x852dc48
   mrd = "prd"
   pravda = true
}
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
   [5] = 500
}
> tabulka [5]="petset"
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
   [5] = "petset"
}
> tabulka [5]=nil
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
}
> tabulka [99]="hovinko"
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
   [99] = "hovinko"
}
> print (tabulka[4]-tabulka[1])
300
> tabulka ["hovno"]=true
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
   [99] = "hovinko"
   hovno = true
}
> tabulka [5]={}
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
   [5] =
      {
      }
   [99] = "hovinko"
   hovno = true
}
> tabulka[5] [7]="sedm"
> tabulka[5] [8]="osm"
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
   [5] =
      {
         [7] = "sedm"
         [8] = "osm"
      }
   [99] = "hovinko"
   hovno = true
}
> tabulka[5] ["vykal"]="chcanky"
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
   [5] =
      {
         [7] = "sedm"
         [8] = "osm"
         vykal = "chcanky"
      }
   [99] = "hovinko"
   hovno = true
}
> tabulka[5].vykal="chcanky"
> =tabulka[5].vykal
chcanky
> return tabulka[5].7
stdin:1: <eof> expected near '.7'
> tabulka.tw=twilight
> print (tab(tabulka))
{
   [1] = 100
   [2] = 200
   [3] = 300
   [4] = 400
   [5] =
      {
         [7] = "sedm"
         [8] = "osm"
         vykal = "chcanky"
      }
   [99] = "hovinko"
   hovno = true
   tw = function: 0x852d508
}
> tabulka.tw (25)
> print tabulka.tw (25)
stdin:1: '=' expected near 'tabulka'
> print (tabulka.tw(25))
false
> print (string)
table: 0x8519018
> print (tab(string))
{
   byte = function: 0x8066080
   char = function: 0x8065610
   dump = function: 0x80663e0
   find = function: 0x8066ce0
   format = function: 0x8065740
   gmatch = function: 0x8065590
   gsub = function: 0x8066cf0
   len = function: 0x8065280
   lower = function: 0x80652c0
   match = function: 0x8066cd0
   rep = function: 0x80650f0
   reverse = function: 0x8065040
   sub = function: 0x8065fa0
   upper = function: 0x8064f90
}
> print (tab(math))
{
   abs = function: 0x8063ba0
   acos = function: 0x8064490
   asin = function: 0x8064450
   atan = function: 0x80643b0
   atan2 = function: 0x80643f0
   ceil = function: 0x8063b50
   cos = function: 0x8064330
   cosh = function: 0x8064370
   deg = function: 0x8063b10
   exp = function: 0x80642f0
   floor = function: 0x8063ac0
   fmod = function: 0x8064280
   frexp = function: 0x8064230
   huge = inf
   ldexp = function: 0x80641d0
   log = function: 0x80640e0
   log10 = function: 0x8064190
   max = function: 0x8063dc0
   min = function: 0x8063d50
   modf = function: 0x8064080
   pi = 3.1415926535898
   pow = function: 0x8064020
   rad = function: 0x8063a80
   random = function: 0x8063e30
   randomseed = function: 0x8063d20
   sin = function: 0x8063ca0
   sinh = function: 0x8063ce0
   sqrt = function: 0x8063c50
   tan = function: 0x8063bd0
   tanh = function: 0x8063c10
}
>
>
> =math.log (123)
4.8121843553724
> print (math["log"](123))
4.8121843553724
> print(print)
function: 0x805fb60
> print = nil
> print (tab(string))
stdin:1: attempt to call global 'print' (a nil value)
stack traceback:
	stdin:1: in main chunk
	[C]: in ?
>
hana@hana-laptop:~/Desktop/Programovani$ lua
Lua 5.2.0  Copyright (C) 1994-2011 Lua.org, PUC-Rio
> print(print)
function: 0x805fb60
> tabulka={klic1=100,klic2=200}
> print (tabulka.klic1)
100
> dofile("zaklad.lua")
{
   [1] = 1
   [2] = 2
   [3] = 3
   [4] = 4
   [5] = 5
   [6] =
      {
         [1] = "a"
         [2] = "b"
      }
   [7] = 7
   [8] = 8
   fn = function: 0x9d86c30
   mrd = "prd"
   pravda = true
}
> print (tab(tabulka))
{
   klic1 = 100
   klic2 = 200
}
> psi={
>> {jmeno="Albert", narozen=2002, vaha=6},
>> {jmeno="Chucky", narozen=2003, vaha=2.5}
>> }
> print (tab(psi))
{
   [1] =
      {
         jmeno = "Albert"
         narozen = 2002
         vaha = 6
      }
   [2] =
      {
         jmeno = "Chucky"
         narozen = 2003
         vaha = 2.5
      }
}
> psi[1].vaha=6.2
> print (tab(psi))
{
   [1] =
      {
         jmeno = "Albert"
         narozen = 2002
         vaha = 6.2
      }
   [2] =
      {
         jmeno = "Chucky"
         narozen = 2003
         vaha = 2.5
      }
}