一次分配多个字段的巧妙方法?

问题描述

由于遗留函数调用，有时我有时不得不写出丑陋的包装器

Due to legacy function calls I'm sometimes forced to write ugly wrappers like this

function return = someWrapper(someField)

a = someField.a;
b = someField.b;
% and so on, realistically it's more like ten variables that
% could actually be grouped in a struct

save('params.mat', 'a', 'b'); %etc.

% then, on another machine, a function loads params.mat, does the calculations
% and saves the result in result.mat containing the variables c,d,...

load('result.mat', 'c', 'd');
return.c = c;
return.d = d;
% again, it's more than just two return values

因此，基本思想是使用与someField的字段名相同的名称创建变量，运行一个函数，并使用someFunction的返回变量的名称作为字段名来创建return结构.

So the basic idea is to create variables with the same names as someField's fieldnames, run a function and create a return structure using someFunction's return variable's names as fieldnames.

是否有某种方法可以使用某些循环简化此操作，例如在fieldnames(someField)上?

Is there some way simplify this using some loop e.g. over fieldnames(someField)?

还是我应该使用一些不同的方法?由于使用someField和result完成了一些进一步的处理，所以我想继续使用结构，但也许第二个问题是

Or should I actually use some different approach? Since some further processing is done with someField and result I'd like to keep using structs, but maybe a second question would be

save和load可以重定向变量名称吗? IE.可以例如将someField.a作为值存储在params.mat中的变量a而不是必须先分配a = someField.a吗?

Can save and load redirect varibale names? I.e. could e.g. the variable a in params.mat be stored using someField.a as value instead of having to assign a = someField.a first?

推荐答案

为什么不这样?

如果是s:

s.a=1
s.b=2
s.c=3

然后，此命令创建一个名为"arguments"的matfile，其中包含变量a，b，c:

Then this command creates a matfile named "arguments" with variables a, b, c:

save arguments.mat -struct s

此命令将matfiles变量加载到结构中

And this command loads a matfiles variables into a structure

r = load('arguments.mat')

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