Ruby was created by Yukihiro "Matz" Matsumoto in Japan in mid-1990s. Name "Ruby" chosen in 1993 during online chat with Keiju Ishitsuka. First public release was Ruby 0.95 in December 1995. Ruby 1.8 was stable until 2013, still used for legacy code
Gem 0.7.0 (August 2018) is officially deprecated. Better performance available through official Gmail API Ruby Client
Ruby is a pinkish to blood-red gemstone made from corundum mineral. Color comes from chromium element in the crystal structure. Natural rubies have hardness of 9.0 on Mohs scale. All natural rubies contain rutile needle inclusions called "silk"
US leads with average annual salary of $110,140. Switzerland follows with $97,518 average. Israel ranks third with $71,559 average. Nigeria has lowest average at $7,255
Accessible both inside and outside class scope. Default public method type. Used for displaying information and interface methods. Allows program/client to change object state
GraalVM Community Edition released for JDK 21 based on OpenJDK 21. Oracle GraalVM released for JDK 21 based on Oracle JDK 21. Language runtimes released as standalone distributions. Community Edition versions have -community suffix in name