以下成员源于类 QVarLengthArray 被弃用。 提供它们是为使旧源代码能继续工作。强烈建议不要在新代码中使用它们。
(deprecated in 6.3)
void
|
prepend (T && value ) |
(deprecated in 6.3)
void
|
prepend (const T & value ) |
[deprecated in 6.3]
void
QVarLengthArray::
prepend
(
T
&&
value
)
[deprecated in 6.3]
void
QVarLengthArray::
prepend
(const
T
&
value
)
This function is deprecated since 6.3. We strongly advise against using it in new code.
This is slow. If you must, use
insert(cbegin(), ~~~)
代替。
插入 value at the beginning of the array.
This is the same as vector.insert(0, value ).
For large arrays, this operation can be slow ( 线性时间 ), because it requires moving all the items in the vector by one position further in memory. If you want a container class that provides a fast prepend () function, use std::list instead.