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What does -1 mean in numpy reshape?
... (-1,3) but not (-1, -1)). It simply means that it is an unknown dimension and we want numpy to figure it out. And numpy will figure this by looking at the 'length of the array and remaining dimensions' and making sure it satisfies the above mentioned criteria
Now see the example.
z = np.array([[...
Calculating moving average
... R not containing future values of given timestamp? I checked forecast::ma and it contains all neighbourhood, not right.
– hhh
Sep 7 '18 at 20:52
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Typing Enter/Return key using Python and Selenium?
I'm looking for a quick way to type and Enter or Return key in Selenium. Unfortunately the form I'm trying to test (not my own code so I can't modify) doesn't have a Submit button. When working with it manually, I just type ENTER or RETURN . I need to know how to do that with the Selenium type ...
Linq code to select one item
...ion methods directly like:
var item = Items.First(i => i.Id == 123);
And if you don't want to throw an error if the list is empty, use FirstOrDefault which returns the default value for the element type (null for reference types):
var item = Items.FirstOrDefault(i => i.Id == 123);
if (ite...
Why is creating a Thread said to be expensive?
...a fair bit of work involved:
A large block of memory has to be allocated and initialized for the thread stack.
System calls need to be made to create / register the native thread with the host OS.
Descriptors need to be created, initialized and added to JVM-internal data structures.
It is also e...
namedtuple and default values for optional keyword arguments
...
I subclassed namedtuple and overrode the __new__ method:
from collections import namedtuple
class Node(namedtuple('Node', ['value', 'left', 'right'])):
__slots__ = ()
def __new__(cls, value, left=None, right=None):
return super(Nod...
Eclipse returns error message “Java was started but returned exit code = 1”
...ine):
/!\ make sure, that the -vm option occurs before the -vmargs command.
Everything after -vmargs is passed directly to the JVM.
-vm
c:/wherever/java/jdk1.6.0_21/jre/bin/server/jvm.dll
-vmargs...
...to your eclipse.ini file, pointing to the JDK you want to use, and check that the req...
How do I detect a click outside an element?
...
This breaks standard behaviour of many things, including buttons and links, contained within #menucontainer. I am surprised this answer is so popular.
– Art
Jun 12 '10 at 8:00
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What does glLoadIdentity() do in OpenGL?
I'm new to OpenGL and I'm a little overwhelmed with all of the random functions that I have in my code. They work and I know when to use them, but I don't know why I need them or what they actually do.
...
Random color generator
Given this function, I want to replace the color with a random color generator.
54 Answers
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