Null coalescing operator

The null coalescing operator (called the Logical Defined-Or operator in Perl) is a binary operator that is part of the syntax for a basic conditional expression in several programming languages, including C#,Perl as of version 5.10,Swift, and PHP 7.0.0.

In contrast to the ternary conditional if operator used as x ? x : y, but like the binary Elvis operator used as x ?: y, the null coalescing operator is a binary operator and thus evaluates its operands at most once, which is significant if the evaluation of x has side-effects.

C#

In C#, the null coalescing operator is ??. It is most often used to simplify null expressions as follows:

For example, if one wishes to implement some C# code to give a page a default title if none is present, one may use the following statement:

instead of the more verbose

or

The three forms are logically equivalent.

The operator can also be used multiple times in the same expression:

Once a non-null value is assigned to number, or it reaches the final value (which may or may not be null), the expression is completed.

Liberman (album)

Liberman is the fifth studio album by American singer-songwriter Vanessa Carlton, released on October 23, 2015, through Dine Alone Records. It is the follow up to Carlton's 2011 album Rabbits on the Run and marks her first release since signing with Dine Alone Records. The title of the album comes from an oil painting made by Carlton's late grandfather, whose given surname was Liberman.

Background and writing

Following the 2011 release Rabbits on the Run, Carlton took time off to get married, start a family and write another album. She tells CBS News that these changes in her life are reflected in Liberman's songs and that she "wanted the whole album to feel like an escape type of album, where you put it on and you feel like you're in this dreamy state."

To avoid preconceived notions, demos recorded were sent to Dine Alone Records without Carlton's name attached. Label president Joel Carriere recalls hearing the demos and tells The Toronto Star, "The songs were amazing, it was atmospheric, it kind of fit into what we’re all into ... and we never would have guessed it was Vanessa Carlton because her voice has developed so much since her pop songs 14 years ago and the songwriting had obviously changed. We were, like: 'Yeah, we want to do this. But what is it we’re doing?'"

Operator (mathematics)

An operator is a mapping from one vector space or module to another. Operators are of critical importance to both linear algebra and functional analysis, and they find application in many other fields of pure and applied mathematics. For example, in classical mechanics, the derivative is used ubiquitously, and in quantum mechanics, observables are represented by hermitian operators. Important properties that various operators may exhibit include linearity, continuity, and boundedness.

Definitions

Let U, V be two vector spaces. Any mapping from U to V is called an operator. Let V be a vector space over the field K. We can define the structure of a vector space on the set of all operators from U to V (A and B are operators):

for all A, B: U → V, for all x in U and for all α in K.

Additionally, operators from any vector space to itself form a unital associative algebra:

with the identity mapping (usually denoted E, I or id) being the unit.

Bounded operators and operator norm

Lady (Lenny Kravitz song)

"Lady" is the final single from the 2004 album Baptism by American rock musician Lenny Kravitz. It was released on November 23, 2004. The song is believed to be written about Kravitz's then-girlfriend, Nicole Kidman. The track was used heavily in the GAP ads. The commercials featured Kravitz dancing and singing the song with his guitar to Sarah Jessica Parker.

Track listing

Chart performance

"Lady" was the most successful song from Baptism on the Billboard Hot 100, where it peaked at #27.

Music video

The video was directed by Philip Andelman. It consists of Kravitz playing guitar and singing in a circular stage, while women are dancing around him. There are lights that change depending on the intensity of the sound of the song.

In popular culture

ABC made use of the song to promote its hit television series Alias in commercials that appeared in full length in movie theaters and in edited form on the network.

External links

Lady (Dennis Wilson song)

"Lady" is a song written by Dennis Wilson, recorded by him with Daryl Dragon and released under the name "Dennis Wilson & Rumbo" in the United Kingdom on 4 December, 1970, on Stateside Records. The song served as the B-side of the "Sound of Free" single. The single was not issued in the United States.

The single was Dennis Wilson's first solo release. On both songs, Wilson performed the lead vocals with Daryl Dragon playing instruments. Dragon and his wife, Toni Tennille, would later become famous as Captain & Tennille.

Proposed releases

Also known as "Fallin' In Love", the song was reportedly originally written for the unreleased Beach Boys' album Add Some Music. That album later evolved into the 1970 release Sunflower, which did not include "Lady". The song has also been rumoured to have been considered for the album that became Surf's Up, but again passed over for the eventual release.

Although a fairly obscure song, it was performed by The Beach Boys, as seen on the 25 February, 1971 edition of The David Frost Show. When asked what inspired the song, Dennis replied, "My lovely wife, she's an inspiration." Dennis was at the time married to Barbara Charren.

Lady (CNBLUE song)

Lady is a Japanese Single from South Korean Rock-band CNBLUE. This single is taken from their third Japan album What Turns You On?. Beside the standard edition, The single came up with three different editions (Limited Edition A and B version and Family Mart Edition which look like Vinyl because it is an LP size version).Every edition comes with a different instrumental: Limited Edition A comes with an instrumental of "Don't Care", Limited Edition B comes with an instrumental of "Monday", Regular and FamilyMart and famima.com Limited editions comes with an instrumental of the title track, "Lady".

Track list

Standard Edition

The Standard Edition has 3 songs and an instrumental.

CD

Family Mart & famima.com Limited Edition

The Family Mart & famima.com Limited Edition has 3 songs and 1 instrumental.

CD

Limited Edition A

The Limited Edition A has 3 songs and 1 instrumental and a DVD with Lady Music Video and Special Feature and Blind Love LIVE

Farah

Farah may refer to:

Name

People

Places and geographical features

See also