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Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects.

The animal on the cover of Learning C# is a goldfish. Goldfish are freshwater fish popular in aquariums and ponds. Though they are native to China, goldfish are one of the most common household pets all over the world. They were first domesticated centuries ago when it was discovered that carp, which are usually olive-colored, can have color mutations causing some of their scales to be red or gold. These mutated fish were bred to create many different varieties of goldfish, including the oranda, ryukin, lionhead, pearlscale, telescoped eye, and bubble eye types.

Most commercial goldfish are scaled and have metallic red, gold, white, silver, or black sheens. But the more rare “scaleless” fish have transparent scales, making them appear bright red, blue, purple, or calico-patterned. Though the wild carp from which goldfish are bred can measure up to 16 inches in length, most commercial goldfish are between 1 and 4 inches long.

Darren Kelly was the production editor, Catherine Morris was the copyeditor, and Sheryl Avruch was the proofreader for Learning C#. Tatiana Apandi Diaz and Claire Cloutier provided quality control. Interior composition was done by Philip Dangler and Genevieve d’Entremont. Angela Howard wrote the index.

Hanna Dyer ...

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