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void Increment (ref int x, int dx = 1) {x += dx;} int x = 0; Increment (ref x); // dx takes the default value of 1 Increment (ref x, 2); // dx takes the value 2 In addition, to complement optional parameters, it is possible to explicitly specify parameter names in method calls, allowing to selectively pass any given subset of optional ...
The actual statement is in columns 7 through 72 of a line. Any non-space character in column 6 indicates that this line is a continuation of the prior line. A 'C' in column 1 indicates that this entire line is a comment. Columns 1 though 5 may contain a number which serves as a label.
As a precursor to the lambda functions introduced in C# 3.0, C#2.0 added anonymous delegates. These provide closure-like functionality to C#. [3] Code inside the body of an anonymous delegate has full read/write access to local variables, method parameters, and class members in scope of the delegate, excepting out and ref parameters. For example:-
{{#ifeq: 2.5 | 2+.5 | equal | not equal }} → not equal (arithmetic!) {{#ifeq: 2*10^3 | 2000 | equal | not equal }} → not equal (arithmetic!) {{#ifeq: 2E3 | 2000 | equal | not equal }} → equal. As seen in the 4th and 5th examples, mathematical expressions are not evaluated. They are treated as regular strings. But #expr can be used to ...
For example, 1/2 and 2/4 are considered equal when seen as a rational number. A possible requirement would be that "A = B if and only if all operations on objects A and B will have the same result", in addition to reflexivity , symmetry , and transitivity .
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