Notes C++
Notes for C++
-
push_back()
vsemplace_back()
- copy vs move
- vec.insert({a, b}) vs vec.emplace(a, b)
-
const
vsconstexpr
-
const
: could be compile-time or runtime constants -
constexpr
: enforces compile-time constants - Any variable that should not be modifiable after initialization and whose initializer is known at compile-time should be declared as
constexpr
. - Any variable that should not be modifiable after initialization and whose initializer is not known at compile-time should be declared as
const
. - https://www.learncpp.com/cpp-tutorial/compile-time-constants-constant-expressions-and-constexpr/
- Don’t use
const
when passing by value. - Don’t use
const
when returning by value.
-