Ruby provides following comparison operators.
String equal ruby.
For each operator plus.
If you don t this right you won t get the expected results.
E g a equal a returns false.
Notice that we use two equal symbols to mean equality.
True or false basis on the equality.
Most operators are actually method calls.
In practice this is almost always what you want.
B is interpreted as a plus b where the plus.
How to check if a string is empty.
Because it s implemented differently in each class it will behave differently depending on the type of object it was called on.
For example a plus.
While evaluating the expression a a ruby will actually create two different string objects which both contain a single character a.
We define an empty string as a string of zero length.
Method in the object referred to by variable a is called with b as its argument.
There is a corresponding form of abbreviated assignment operator.
How to get the string length.
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.
Here str and other str are the strings.
Ruby supports a rich set of operators as you d expect from a modern language.
For the rare case when you actually need to check if two objects are the same object there s the method equal.
A string object in ruby holds and manipulates an arbitrary sequence of one or more bytes typically representing characters that represent human language.
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.
True if x is exactly equal to y not equal.
The text within the quote marks is the value of the string this is a simple ruby string literal.
But when you want to check for the opposite not true false.
Comparison returns 1 0 1 or nil depending on whether string is less than equal to or greater than other string.
Nil is returned if the two values are incomparable.
Is a string class method in ruby which is used to check whether the strings are equal or not if they have the same length and content.
The simplest string literals are enclosed in single quotes the apostrophe character.
One equals sign in ruby means assignment make sure to use when you want to find out if two things are the same.
With an if statement you can check if something is true.
