For example a plus.
Ruby string comparison equal.
For each operator plus.
Then ruby would use object s implementation of which defaults to testing for object identity instead of object contents.
For example 1 1 1 will return true because the numbers on both sides represent the same value.
Object comparison is extremely important not only do we tend to often explicitly compare objects to each other e g.
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.
Method in the object referred to by variable a is called with b as its argument.
B is interpreted as a plus b where the plus.
Notice that we use two equal symbols to mean equality.
Object new object new false string new string.
This works because the string class implements a two equal signs method that knows how to compare strings.
Comparison operators take simple values numbers or strings as arguments and used to check for equality between two values.
The expression a a also returns true because both strings have the same value.
If you don t this right you won t get the expected results.
One equals sign in ruby means assignment make sure to use when you want to find out if two things are the same.
Ruby string1 abc if abc string1 puts they are equal end but objects are frequently compared and tested for equality lsquo behind.
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.
Nil is returned if the two values are incomparable.
Comparison returns 1 0 1 or nil depending on whether string is less than equal to or greater than other string.
Most operators are actually method calls.
Equality is performed either using the or eql.
With an if statement you can check if something is true.
The operator returns true if both objects can be considered the same.
John fred false john eql.
In order to compare things ruby has a bunch of comparison operators.
But what if string didn t implement.
There is a corresponding form of abbreviated assignment operator.
If the strings are of different lengths and the strings are equal when compared up to the shortest length then the longer string is considered greater than the shorter one.
But when you want to check for the opposite not true false.
