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Hashing a dictionary?
...) for e in o])
elif not isinstance(o, dict):
return hash(o)
new_o = copy.deepcopy(o)
for k, v in new_o.items():
new_o[k] = make_hash(v)
return hash(tuple(frozenset(sorted(new_o.items()))))
Bonus: Hashing Objects and Classes
The hash() function works great when you hash cla...
What is the difference between the different methods of putting JavaScript code in an ?
... he states that using the href section to execute JavaScript code is a bad idea. Even though you have stated that your users must have JavaScript enabled, there's no reason you can't have a simple HTML page that all your JavaScript links can point to for their href section in the event that someone...
What are best practices that you use when writing Objective-C and Cocoa? [closed]
...een large blocks. We use a 2 second timer for instance that resets on each new submit. When it expires, we send COMMIT; , which causes all your writes to go in one large chunk. SQLite stores transaction data to disk and doing this Begin/End wrapping avoids creation of many transaction files, groupin...
How to write PNG image to string with the PIL?
...:
from io import BytesIO
from PIL import Image, ImageDraw
image = Image.new("RGB", (300, 50))
draw = ImageDraw.Draw(image)
draw.text((0, 0), "This text is drawn on image")
byte_io = BytesIO()
image.save(byte_io, 'PNG')
Read more: http://fadeit.dk/blog/post/python3-flask-pil-in-memory-image
...
Why doesn't Java Map extend Collection?
...lements? The only reasonable answer
is "Key-value pairs", but this
provides a very limited (and not
particularly useful) Map abstraction.
You can't ask what value a given key
maps to, nor can you delete the entry
for a given key without knowing what
value it maps to.
Collection co...
Difference between size_t and std::size_t
...ing changes" which isn't referring to size_t. Its rather referring to the new additions (mostly) made by C++ into the language (not present in C) which are also defined in the same header.
Wikipedia has very good info about range and storage size of size_t:
Range and storage size of size_t
...
StringBuilder vs String concatenation in toString() in Java
...
is very time- and memory-wasteful compared with:
...
StringBuilder sb = new StringBuilder();
for (String s : hugeArray) {
sb.append(s);
}
String result = sb.toString();
share
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improve this ...
Windows batch: echo without new line
...batch equivalent of the Linux shell command echo -n which suppresses the newline at the end of the output?
18 Answers
...
Checking whether a variable is an integer or not [duplicate]
...l the flexibility of polymorphism. For instance, if you subclass int, your new class should register as an int, which type will not do:
class Spam(int): pass
x = Spam(0)
type(x) == int # False
isinstance(x, int) # True
This adheres to Python's strong polymorphism: you should allow any object that b...
github markdown colspan
...l = function(e) {
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
...