drSetElem

drSetElem(
o_vec
x_index
g_value
)
=> t / nil

Replaces the x_indexth element of the data vector o_vec with g_value. g_value must have the same data type as the data vector.

o_vec	Data vector to which a new element g_value will be appended.
x_index	The index for which the value is replaced.
g_value	New element to be added at end of data vector o_vec.

`t`	Returns `t` if the element is replaced.
`nil`	Returns `nil` if there is an error.

vec = drCreateVec('double 5)
drSetElem(vec 0 10.0)