C# FAQ: How specify a CSharp literal type
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How specify a C# literal type?
Sometimes, it is necessary to notify the C# compiler that a literal must be treated as a certain number type. This can be accomplished by adding a number type suffix to the end of the literal. For example:
1m; // System.Decimal 1f; // System.Single 1d; // System.Double 1U; // unsigned int 1ul; // unsigned long
This is a useful feature when a literal must be matched to a signature or a value is specified in order to defeat an undesired implicit cast of 0.5 to a double. For instance:
Hashtable table = new Hashtable (1000, 0.5);
The preceding line will not compile; because, the Hashtable constructor expects parameters (int, float); but, the preceding is (int, double). To defeat the implicit cast, use a line similar to the following:
Hashtable table = new Hashtable (1000, 0.5f);
A complete listing of the suffixes is specified in the C# Language Specifcation sections specified below.
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