43 lines
916 B
Plaintext
43 lines
916 B
Plaintext
Utility classes, which are collections of ``++static++`` members, are not meant to be instantiated.
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C# adds an implicit public constructor to every class which does not explicitly define at least one constructor. Hence, at least one ``++protected++`` constructor should be defined if you wish to subclass this utility class. Or the ``++static++`` keyword should be added to the class declaration to prevent subclassing.
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== Noncompliant Code Example
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----
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public class StringUtils // Noncompliant
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{
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public static string Concatenate(string s1, string s2)
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{
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return s1 + s2;
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}
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}
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----
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== Compliant Solution
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----
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public static class StringUtils
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{
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public static string Concatenate(string s1, string s2)
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{
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return s1 + s2;
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}
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}
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----
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or
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----
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public class StringUtils
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{
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protected StringUtils()
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{
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}
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public static string Concatenate(string s1, string s2)
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{
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return s1 + s2;
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}
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}
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----
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