Accessing Array Elements: i vs. .at(i)

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SUMMARY

The discussion clarifies the differences between accessing array elements using the subscript operator [i] and the .at(i) method in C++. The .at(i) function performs bounds checking and throws an out_of_range exception if the index is invalid, while the subscript operator does not provide such safety checks. This distinction is crucial for developers to prevent runtime errors when accessing elements in a vector.

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ok I am a little confused.
can both and .at(i) be used to same way to access an array element?
 
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The [m].at(n)[/m] function automatically checks whether $n$ is within the bounds of valid elements in the vector, throwing an out_of_range exception if it is not (i.e., if $n$ is greater or equal than its size). This is in contrast with member operator[], that does not check against bounds.
 

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