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Set every cell in matrix to 0 if that row or column contains a 0
...here are rows/cols with only 1's. Then, there are 2 variables l and c to remember if 1rst row/column are all 1's also.
So the first pass sets the markers and resets the rest to 0's.
The second pass sets 1 in places where rows and cols where marked to be 1, and resets 1st line/col depending on l and...
When should Flask.g be used?
...move from the request context to the app context in Flask 0.10, which made me confused about the intended use of g .
2 Ans...
C# vs C - Big performance difference
... use 'root', the compiler may have been removing the call to optimize your method.
You could try to accumulate the square root values into an accumulator, print it out at the end of the method, and see what's going on.
Edit : see Jalf's answer below
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Sanitizing strings to make them URL and filename safe?
I am trying to come up with a function that does a good job of sanitizing certain strings so that they are safe to use in the URL (like a post slug) and also safe to use as file names. For example, when someone uploads a file I want to make sure that I remove all dangerous characters from the name.
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What is a Y-combinator? [closed]
...uter science concept from the “functional” side of things. Most programmers don't know much at all about combinators, if they've even heard about them.
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How do I check if a string is valid JSON in Python?
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I can see how that will work. Leads me to my next question. It throws a ValueError. What I want it to do at this point is return the offending string so I can do something else with it. So far, I've only gotten the error message and type.
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What's the difference between SoftReference and WeakReference in Java?
...s a
reference that isn't strong enough to
force an object to remain in memory.
Weak references allow you to leverage
the garbage collector's ability to
determine reachability for you, so you
don't have to do it yourself. You
create a weak reference like this:
WeakReference weakWidget ...
INNER JOIN ON vs WHERE clause
For simplicity, assume all relevant fields are NOT NULL .
11 Answers
11
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Relationship between SciPy and NumPy
...ppears to provide most (but not all [1]) of NumPy's functions in its own namespace. In other words, if there's a function named numpy.foo , there's almost certainly a scipy.foo . Most of the time, the two appear to be exactly the same, oftentimes even pointing to the same function object.
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Difference between objectForKey and valueForKey?
...ence between objectForKey and valueForKey ?
I looked both up in the documentation and they seemed the same to me.
5 Answ...