Operators in Ruby - Part 1

op1_output

true
16

24	-16	80	5	0
22
22
2
2
hello world
hello world
1
0
-1
-12
1

value of a1 is: 24 and value of a2 is: -16
false
true
false
true
1

Operators1.rb

# Playing with operators in Ruby

limit = 5

p = 2 * Math.sqrt(4) < limit

puts(p)

k = 2 ** 4 # Exponentiation Operator..
puts(k)

#--------------------------------------------------------------------------------------------------------------------------------
t = 4
l = 20
a1 = t + l
a2 = t - l
a3 = t * l
a4 = l / t

a5 = 20 % 4

puts("\n#{a1}\t#{a2}\t#{a3}\t#{a4}\t#{a5}\n")

#--------------------------------------------------------------------------------------------------------------------------------

# Left and Right Shift operators..

b1 = 11 << 1
b2 = 11 >> -1 # !! check the working of this..

puts(b1)
puts(b2)

b3 = 22 >> 3
b4 = 22 << -3  # !! check the working of this..
puts(b3)
puts(b4)

#--------------------------------------------------------------------------------------------------------------------------------

# Right Shift operator also used for appending..also use of STDOUT Predefined Global constant.. 

message = "hello"

messages = []

message << " world"

puts(message)

STDOUT << message

print("\n")

#--------------------------------------------------------------------------------------------------------------------------------
# working of AND, OR, Tilde(~) and XOR

c1 =  0 | 1
puts(c1)

c2 =  0 & 1
puts(c2)

c3 =  ~0 # ~ for a variable x it functions as -x-1.. here its -0-1 thus op is c3 = -1
puts(c3) # this is the way of functioning for an INTEGER... 


c4 =  ~0b1011 # 11 in binary is .. 1011.. '~' converts all 0's to one and vice versa..
puts(c4) # Thus we get.. 0100.. thats 4.. DOUBT... DO NOTE..?????????????????????????

c5 =  1 ^ 0
puts(c5)

#--------------------------------------------------------------------------------------------------------------------------------
# working of comparison operators

print("\nvalue of a1 is: #{a1} and value of a2 is: #{a2}\n")

s1 = a1<a2
puts(s1)

s2 = a1>a2
puts(s2)

s3 = a1<=a2
puts(s3)

s4 = a1>=a2
puts(s4)

s5 = a1<=>a2 # note the working of the comparison operator of Ruby it prints the value of 1 if a1>a2, 0 if both r equal and -1 if a1<a2
puts(s5) # the idea behind this operator is that it a multipurpose general operator.. hence.. used in classes.. it provides convenience..

#--------------------------------------------------------------------------------------------------------------------------------