dq.isket

isket(x: QArrayLike) -> bool

Returns True if the qarray is in the format of a ket.

Parameters:

• x (qarray-like of shape (...)) –

  Qarray-like.

Returns:

• True if the last dimension of x is 1, False otherwise.

Examples:

>>> dq.isket(jnp.ones((3, 1)))
True
>>> dq.isket(jnp.ones((5, 3, 1)))
True
>>> dq.isket(jnp.ones((3, 3)))
False