Ruby is_a?(Integer) issues
87552
How to test if a string is basically an integer in quotes using Ruby
94213
Checking if an input number is an integer
94403
Is there an inverse 'member?' method in ruby?
135810
Why doesn't Ruby support i++ or i--​ (increment/decrement operators)?
22122
How do you use the ? : (conditional) operator in JavaScript?
29812
How do I test if a variable is a number in Bash?
151816
What is the semantics of 'is' operator in Python?
120169
Expected identifier, string or number
36929
Why does comparing strings using either '==' or 'is' sometimes produce a different result?
46477
How to understand nil vs. empty vs. blank in Ruby
59666
what is "?" in ruby
141386
What are <-- Ruby Strings called? And how do I insert variables in them?
37800
Comparing integers: arithmetic expression or conditional expression
47961
\ifmmode doesn't seem to work correctly inside an array environment
27583
Determine if object is integer
41022
Why does the ternary operator unexpectedly cast integers?
74217
What is the "equals greater than" operator => in Ruby?