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QUESTION
I'm a newbie in Java and I'm trying to make a ship fire a bullet. What I want is actually make the ship fire bullets as long as the Spacebar button is being held down. I've successfully made the ship move here and there and also fire the bullet. However the bullet just won't go up. Here's my code -
...ANSWER
Answered 2017-Sep-28 at 08:18The reason for the bullet not moving becomes appearant when you compare your shoot()
method, and the paintComponent
method.
Shoot checks if you have the shot
boolean set, and if so, moves the bullet y position up by 2
.
When the bullet leaves the top of the screen, it resets the "bullet". This is all fine, it does what it's supposed to.
QUESTION
ANSWER
Answered 2017-Jul-12 at 03:33The TensorFlow API has a very short section on tf.global_variables_initializer
. It simply mentions:
This is just a shortcut for
variable_initializer(global_variables())
.
Tracing it to tf.variables_initializer
, we can see that the usage of this function is as such:
tf.variables_initializer(var_list, name='init')
This means that we are implitcitly passing tf.global_variables
as a var_list
into tf.variables_initializer
. If we have not defined any variables before calling tf.global_variables_initializer
, var_list
is essentially empty. The code below illustrates this:
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