What is the easiest way to initialize a std::vector with hardcoded elements?

Question

What is the easiest way to initialize a std::vector with hardcoded elements?

I can build an array and initialize it similar this:

int a[] = {10, 20, 30};

Whereby do I perform a std::vector and initialize it likewise elegant?

The most reliable approach I remember is:

std::vector<int> ints;



ints.push_back(10);

ints.push_back(20);

ints.push_back(30);

Is there a more reliable method?

stl vector cpp

4 years ago by vishaljlf39

2 Answers

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**akshay1995** · Answer 1 · 2021-05-29T08:48:43

One method would be to use the array to initialize the vector



static const int arr[] = {16,2,77,29};

vector<int> vec (arr, arr + sizeof(arr) / sizeof(arr[0]) );

**kshitijrana14** · Answer 2 · 2021-05-31T15:34:16

typedef std::vector<int> arr;

arr a {10, 20, 30};       // This would be how you initialize while defining

To compile use:

clang++ -std=c++11 -stdlib=libc++  <filename.cpp>

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What is the easiest way to initialize a std::vector with hardcoded elements?

2 Answers

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