: ~/fs/Courses/cps506/w2019/Notes/Feb08 ; iex
Erlang/OTP 20 [erts-9.3] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:10] [hipe] [kernel-poll:false] [dtrace]

Interactive Elixir (1.5.2) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> 1+2
3
iex(2)> 1 < 4.0
true
iex(3)> :atom
:atom
iex(4)> [[3,4],5,6]
[[3, 4], 5, 6]
iex(5)> [3,4|[5,6]]
[3, 4, 5, 6]
iex(6)> [3,4|5]
[3, 4 | 5]
iex(7)> a = [4,5,6]
[4, 5, 6]
iex(8)> a
[4, 5, 6]
iex(9)> a = [1,2,3]
[1, 2, 3]
iex(10)> {:valid,[h|t],x} = {:valid,a,:blat} 
{:valid, [1, 2, 3], :blat}
iex(11)> h
1
iex(12)> t
[2, 3]
iex(13)> x
:blat
iex(14)> {:valid,[h|t],x} = {:valid,a}      
** (MatchError) no match of right hand side value: {:valid, [1, 2, 3]} 

iex(14)> {:valid,[h|t],x} = {:valid,2,3}
** (MatchError) no match of right hand side value: {:valid, 2, 3}
 
iex(14)> {:valid,[h|t],x} = {:valid,[2],3}
{:valid, [2], 3}
iex(15)> t
[]
iex(16)> {:valid,[h|t],x} = {:valid,[],3} 
** (MatchError) no match of right hand side value: {:valid, [], 3}

iex(16)> negate = fn x -> -x end
#Function<6.99386804/1 in :erl_eval.expr/5>
iex(17)> negate.(5)
-5
iex(18)> c "foo.ex"
[Foo]
iex(19)> Foo.number(5)
-5
iex(21)> Foo.number(5)
-5
iex(22)> Foo.number(0)
"zero"
iex(24)> Foo.number(:bar)
"blat"
iex(25)> Enum.map(1..5,fn x -> x+6 end)
'\a\b\t\n\v'
iex(26)> Enum.map(300..305,fn x -> x+6 end)
[306, 307, 308, 309, 310, 311]
iex(27)> Enum.reduce(300..305,0,fn x,sum -> x+sum end)
1815
iex(28)> Enum.reduce(300..305,0,fn x,soFar -> x*soFar end)
0
iex(29)> Enum.reduce(300..305,1,fn x,soFar -> x*soFar end)
766144599696000
iex(30)> Enum.reduce(3000..3050,1,fn x,soFar -> x*soFar end)
3286488393053701380427940724328811803319608107691299953254989130208849033142219638248432842445838130320539876696997280800602864803950419963042862281844137673097216000000000000000
iex(31)> small = fn x -> x <300 end
#Function<6.99386804/1 in :erl_eval.expr/5>
iex(32)> small.(5)
true
iex(33)> small.(500)
false
iex(34)> Enum.filter(260..350,small)
[260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274,
 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289,
 290, 291, 292, 293, 294, 295, 296, 297, 298, 299]
iex(35)> Enum.take(260..350,5)      
[260, 261, 262, 263, 264]
iex(36)> Enum.take_while([200,250,400,200],small)
[200, 250]
iex(37)>