Passing both the the variable name and value to a function

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Mohamed Abdalmoaty
Mohamed Abdalmoaty 2012-1-26
Hello,
I wonder if there is a way to pass not only the value of a variable, but also it's name to a function.
For example, if I have four variables of any type, say a = 1; b = 2; c =3; d =2;
and I have a random function that takes variable number of arguments, for example: randfun
If I used the command out = randfun(a,b,d) for example, the values and types of a, b, d will be stored in the varargin in the workspace.
Is there any way to also know the name (in char type) of the the arguments?
Thank you

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采纳的回答

Andrew Newell
Andrew Newell 2012-1-27
You can use inputname inside the function to find the names of the variables.

更多回答（1 个）

owr
owr 2012-1-27
One solution might be to pass all your input arguments as fields in one structure.
For example, define your input arguments like this:
inputargs.a = 1
inputargs.b = 2
Pass the structure as a single input to your function:
out = randfun(inputargs)
Then within the body of the function "randfun" you can get access to both the variable names and values like this:
>> varnames = fieldnames(inputargs)
varnames =
'a'
'b'
Get access to the name of the first input:
>> varnames{1}
ans =
a
Get access to its value:
>> inputargs.(varnames{1})
ans =
1
Also check out the "inputparser" class in base MATLAB if your version is new enough

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