Web application security is a central component of any web-based business. The global nature of the Internet exposes web properties to attack from different locations and various levels of scale and complexity. Web application security deals specifically with the security surrounding websites, web applications and web services such as APIs. …

String construction has what is known as a literal form — the interpreter treats anything surrounded with single quotes (‘) or double quotes(“) as a string. In other words, both ‘Test’ and “Test” will create instances of strings. All Strings are instances of the Ruby String class which provides a…

Include Vs Extend include: - It is used for importing module code. …

Write a program for calculator which should be able to add, subtract, multiple and divide. Restrictions: - Only the use of the ‘+’ operator is allowed. The ‘-’ sign may only be used to signify a negative number. …

Ruby Array Arrays are ordered, integer-indexed collections of any object. Array indexing starts at 0, as in C or Java. A negative index is assumed to be relative to the end of the array — -that is, an index of -1 indicates the last element of the array, -2 is…