Nigeria Ethnic violence for control over the oil-producing Niger Delta region and inadequate infrastructures are some of the issues in the country. Umaru Yar'Adua of the People's Democratic Party (PDP) came into power in the general election of 2007. The international community has been observing Nigerian elections to encourage a free and fair process, and condemned this one as being severely flawed. Yar'Adua died on 5 May 2010. Dr. Goodluck Jonathan was sworn in as Yar'Adua's replacement on 6 May 2010, becoming Nigeria's 14th Head of State, while his vice-president, Namadi Sambo, an architect and former Kaduna State governor, was chosen
S-expression vary in the different languages, but the most common feature among these languages is the use of S-expressions and prefix notation. There are many variants of the S-expression format, supporting a variety of different syntaxes for different datatypes. The most widely supported are: The character codice_15 is often used to prefix extensions to the syntax, e.g. codice_16 for hexadecimal integers, or codice_17 for characters. When representing source code in Lisp, the first element of an S-expression is commonly an operator or function name and any remaining elements are treated as arguments. This is called "prefix notation" or "Polish notation". As