head() [2/3]

template<typename T , require_vector_t< T > * = nullptr>

auto stan::math::head ( const T &  v, size_t  n  )

inline

Return the specified number of elements as a vector or row vector (same as input) from the front of the specified vector or row vector.

Template Parameters

T	type of the vector

Parameters

v	Vector input.
n	Size of return.

Returns

The first n elements of v.

Exceptions

std::out_of_range

if n is out of range.

Definition at line 22 of file head.hpp.