Ruby Print Variable

Here s how it works.

Ruby print variable.

Using environment variables in ruby. For each element in the sharks array ruby assigns that element to the local variable shark. Global variable in class1 is 10 global variable in class2 is 10 ruby instance variables. Ruby runtime programming workflow interactive ruby our roadmap object oriented programming variables reusing variable names things on the right go first built in data types numbers strings true false and nil symbols arrays hashes.

Note that print does not do the same. We can then print the element s value using puts. Note in ruby you can access value of any variable or constant by putting a hash character just before that variable or constant. You won t see for in very often though.

If you want to access these environment variables from ruby there is a special object you can use. Note that older version of ruby. Ruby has yet another printing method. This is like p but it prints big hashes arrays in a nicer way.

The puts function also displays output. The ruby print function is used to display output on the screen. Instance variables begin with commat. The string or integer value to be printed is passed as an argument to this function.

Ruby arrays are objects and they provide the each method for working with elements. You can also print all the gem specific variables configuration with the gem env command. But it can show up if you try to puts a variable as the last line of a method and you re using the return value of that method.