First value of possible empty array
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I need to find the first value in an array. Simple:
A = [1.2, 2.3, 3.4, 4.5, 5.6]
A(1) = 1.2
But sometimes this array can be an empty array: A = []
Then the code gives an error. I want it to give: A(1) = [];
Is this possible without the: -if isempty(A)==0- command?
greetings, K
回答（1 个）
if isempty(A)
works just as well as
if isempty(A) == 0
which is redundant.
If your array is empty though then you will need to handle this as such. You cannot index into an empty array.
In many usages you would want to make this check anyway though because your array being empty is a significant difference from it not being empty so you would expect to run different code in such circumstances.
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