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Question 21 .
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What is the difference between string and String (lower- and uppercase)?
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Question 22 .
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Some of the interfaces implemented by the string are: IComparable , ICloneable , IConvertible and IEnumerable . What do these guarantee to you as a client of the String class?
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Question 23 .
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What is a string literal?
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Question 24 .
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What is the purpose of escape characters ? Give two examples.
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Question 25 .
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What are verbatim strings?
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Question 26 .
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What does it mean that strings are immutable?
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Question 27 .
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What does it mean that the String class is sealed?
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Question 28 .
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What are the two ways to concatenate strings?
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Question 29 .
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What does Split( ) do?
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Question 210 .
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What is the StringBuilder class, why is it used, and how do you create a string with one?
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Question 211 .
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What are regular expressions?