编译ASP.NET 5 Web应用程序并生成DLL文件(Compiling an ASP.NET 5 Web Application and generating DLL files)

 问题是validatestring从cell参数（ {'imag',''} ）返回匹配的字符串，而不是指示它是否通过验证的布尔值。 相反，使用strcmp和any ： 
 
@(x) any(strcmp(x,{'imag', ''}))
 
 另外，使用validatestring ，如果输入字符串不匹配'imag'或'' （实际上只是'imag'因为空字符串仅在R2014a +中匹配），它会抛出错误而不是返回false，以便inputParser可以返回适当的错误。 
 
 修复问题的另一个好方法是完全改变applyFunc的语法，以便使用带有'imag'作为参数的参数值和作为输入的有效布尔值来代替'imag'作为可选的字符串输入参数。 
 
 Amro在评论中建议的输入定义： 
 
p.addParameter('imag', false, @(x)validateattributes(x, {'logical'}, {'scalar'}))
 
 用法： 
 
mysum(x,'imag',true)
mysum(x)               % default is equivalent to mysum(x,'imag',false)
 
 这将简化代码的其余部分， p.Result.imag是一个logical标量。 我会建议： 
 
x = f(v) + p.Result.imag*1i;

The problem is that validatestring returns the matching string from the cell argument ({'imag',''}) rather than a Boolean indicating if it passes validation. Instead, use strcmp and any:
 
@(x) any(strcmp(x,{'imag', ''}))
 
Also, with validatestring, if the input string did not match either 'imag' or '' (actually just 'imag' since empty strings only match in R2014a+), it would throw an error rather than returning false so that the inputParser could return the appropriate error.
 
Another nice way to fix the problem is to change the syntax of applyFunc entirely so that instead of just 'imag' as an optional string input argument, use a Parameter-Value with 'imag' as the parameter and a validated boolean as the input.
 
The input definition suggested by Amro in the comments:
 
p.addParameter('imag', false, @(x)validateattributes(x, {'logical'}, {'scalar'}))
 
The usage:
 
mysum(x,'imag',true)
mysum(x)               % default is equivalent to mysum(x,'imag',false)
 
This would simplify the rest of the code with p.Result.imag being a logical scalar. I would suggest:
 
x = f(v) + p.Result.imag*1i;