Conditional operators in ruby

1. = (equal to) and! = (Not equal)

Returns true and flase if the values of the two objects are equal.

A = 1; B = 1.0; A = B # True

2. eql?

Returns true and flase if the values and types of the two objects are equal.

A = 1; B = 1.0; A. eql? (B) # flase (A is an integer and B is a floating point)

3. Equal?

Returns true and flase if two objects have the same address in the memory.
A = 1.0; B = 1.0; A. Equal? (B) # flase

A = 1.0; B = A; A. Equal? (B) # True

4. <=>

Compare the sizes of two objects. If the values are greater than, equal to, or less than, 1, 0,-1 are returned.
"AAB" <=> "ACB" #-1 (the ASCII code of the second A is less than C)

[5] <=> [4, 9] #1 (first element 5> 4)

5. =

Returns true and flase if the object on the right is within the left range.
Puts (0 .. 9) === 3.14 # True

Puts ('A' .. 'F') = 'C' # True

6. = ~ (Matching)

Used to compare whether a regular expression is met. The return mode is the position matched in the string. Otherwise, Nil is returned.

7 .!~ (Mismatch)

Returns true, flase