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What's the difference between window.location= and window.location.replace()?
...
window.location adds an item to your history in that you can (or should be able to) click "Back" and go back to the current page.
window.location.replace replaces the current history item so you can't go back to it.
See window.location:
assign...
Representing graphs (data structure) in Python
... """ Remove all references to node """
for n, cxns in self._graph.items(): # python3: items(); python2: iteritems()
try:
cxns.remove(node)
except KeyError:
pass
try:
del self._graph[node]
except KeyError:
...
MongoDB with redis
... backend application can listen to several queues with a timeout, transfer items to another queue atomically, etc ... If the application requires some queuing, it makes sense to store the queue in Redis, and keep the persistent functional data in MongoDB.
Redis also offers a pub/sub mechanism. In a ...
What are the differences between a multidimensional array and an array of arrays in C#?
...y, and with many types of memory (past and present), accessing consecutive items is faster than accessing distant items. I think in .net one should get optimal results indexing by the last subscript which is what you were doing, but testing the time with the subscripts swapped may be informative in...
Start thread with member function
...on of a class T and t1 is not one of the types described in the previous
item;
t1.*f when N == 1 and f is a pointer to member data of a class T and t 1 is an object of type T or a
reference to an object of type T or a reference to an object of a
type derived from T;
(*t1).*f when N ==...
What is the purpose of backbone.js?
...ethods. Say you have a todo list, you would have a model representing each item on that list.
When your model is updated, it fires an event. You might have a view tied to that particular object. The view listens for model change events and re-renders itself.
Views
Backbone provides you with Vie...
What is the difference between class and instance attributes?
...ertain number of elements or fewer) and choose to have a default cap of 10 items
class MyClass(object):
limit = 10
def __init__(self):
self.data = []
def item(self, i):
return self.data[i]
def add(self, e):
if len(self.data) >= self.limit:
ra...
Named colors in matplotlib
...lors.to_rgba(color)[:3])), name)
for name, color in colors.items())
sorted_names = [name for hsv, name in by_hsv]
n = len(sorted_names)
ncols = 4
nrows = n // ncols
fig, ax = plt.subplots(figsize=(12, 10))
# Get height and width
X, Y = fig.get_dpi() * fig.get_size_inches()
h = Y /...
What is the most efficient/elegant way to parse a flat table into a tree?
...
Which describes a tree which looks like this (with id representing each item):
1
+-- 2
| +-- 3
| +-- 4
|
+-- 5
+-- 6
+-- 7
Or, as a nested set diagram which makes it more obvious how the lft and rght values work:
_________________________________________________________...
Why and How to avoid Event Handler memory leaks?
...dded once per +=.
When the event is raised it go through the linked list, item by item and call all the methods (event handlers) added to this list, this is why the event handlers are still called even when the pages are no longer running as long as they are alive (rooted), and they will be alive a...