amir amir questions

• What's the difference between File.open() with and without a block?
• Making executable file from Ruby program
• Time complexity versus space complexity in Turing machines
• Implementing tree with Ruby
• Implementation Tree and other data structure with ruby [closed]
• Insert text into existing file
• slash and backslash in Ruby
• Listing the files in a directory and all subdirectory
• File opening mode in Ruby

amir amir answers