Most operators are actually method calls.
Ruby string comparison equal.
The operator returns true if both objects can be considered the same.
But when you want to check for the opposite not true false.
For example a plus.
But what if string didn t implement.
Nil is returned if the two values are incomparable.
Comparison operators take simple values numbers or strings as arguments and used to check for equality between two values.
It is not uncommon to need to compare two strings either to assess equality or to find out if one string is higher or lower than the other alphabetically speaking.
B is interpreted as a plus b where the plus.
If you don t this right you won t get the expected results.
Then ruby would use object s implementation of which defaults to testing for object identity instead of object contents.
Object new object new false string new string.
Ruby string1 abc if abc string1 puts they are equal end but objects are frequently compared and tested for equality lsquo behind.
For each operator plus.
Notice that we use two equal symbols to mean equality.
Just like other object oriented languages ruby gives an object ways to find out if it is equal to greater or less than another object.
With an if statement you can check if something is true.
Many of ruby s built in classes such as string range and regexp provide their own implementations of the operator also known as case equality triple equals or threequals.
In order to compare things ruby has a bunch of comparison operators.
Because it s implemented differently in each class it will behave differently depending on the type of object it was called on.
Method in the object referred to by variable a is called with b as its argument.
This works because the string class implements a two equal signs method that knows how to compare strings.
Ruby supports a rich set of operators as you d expect from a modern language.
Equality is performed either using the or eql.
John fred false john eql.
There is a corresponding form of abbreviated assignment operator.
One equals sign in ruby means assignment make sure to use when you want to find out if two things are the same.
Comparison returns 1 0 1 or nil depending on whether string is less than equal to or greater than other string.
The expression a a also returns true because both strings have the same value.