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Determine if two rectangles overlap each other?
....Y1)
Say you have Rect A, and Rect B.
Proof is by contradiction. Any one of four conditions guarantees that no overlap can exist:
Cond1. If A's left edge is to the right of the B's right edge,
- then A is Totally to right Of B
Cond2. If A's right edge is to the left of the B's left...
Look up all descendants of a class in Ruby
...= 3, you have two options in place. Use .descendants if you want more than one level depth of children classes, or use .subclasses for the first level of child classes.
Example:
class Animal
end
class Mammal < Animal
end
class Dog < Mammal
end
class Fish < Animal
end
Animal.subclasse...
Get the latest record from mongodb collection
... also how last record is fetched when your are limiting the output to just one document and it must be the top document in collection.
– kailash yogeshwar
Nov 23 '16 at 16:58
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Install tkinter for Python
...
How does one install tkinter from sources? I have tcl/tk, verified using wish. I can't find the source tarball for tkinter.
– lapin
Mar 6 '17 at 18:19
...
How to trim whitespace from a Bash variable?
...e single expression could be made conditional, with |, so as to keep it as one single expression, rather than several.
– Victor Zamanian
Apr 9 '14 at 13:59
...
When is a language considered a scripting language? [closed]
...about languages like Python? It's not easy to tell where the focus is, but one could say it's focusing more on own applications, still it's often called a "scripting language". Maybe because the hidden compilation into bytecode of the reference CPython impl. doesn't raise compilation errors regardin...
Is there a Python caching library?
... Ah, I kept searching for this and all I found was a wiki that mentioned how to use it as an WSGI middleware. It looks like what I need, thank you.
– Stavros Korokithakis
Sep 15 '09 at 14:20
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What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
...cue which will catch RuntimeErrors, report them, and then continue. But in one or two circumstances, we want the daemon to really really die on an error, and in that case we raise an Exception, which goes straight through our "normal error handling code" and out.
And again, if you are writing libra...
Hashing a file in Python
...d5.hexdigest()))
print("SHA1: {0}".format(sha1.hexdigest()))
What we've done is we're updating our hashes of this bad boy in 64kb chunks as we go along with hashlib's handy dandy update method. This way we use a lot less memory than the 2gb it would take to hash the guy all at once!
You can test ...
Manually raising (throwing) an exception in Python
...ktrace (and error value) with sys.exc_info(), but this is way more error prone and has compatibility problems between Python 2 and 3, prefer to use a bare raise to re-raise.
To explain - the sys.exc_info() returns the type, value, and traceback.
type, value, traceback = sys.exc_info()
This is ...