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What exactly does stringstream do?
... ss << num;
ret = ss.str();
return ret;
};
Maybe it's a bit complicated but it is quite complex. You create stringstream object ss, modify its flags, put a number into it with operator<<, and extract it via str(). I guess that operator>> could be used.
Also in this ex...
Is a Java hashmap search really O(1)?
...notation allows us to do something more compelling. Observe that for any arbitrary, fixed constant k.
O(n) = O(k * n)
We can use this feature to improve the performance of the hash map. We could instead think about the probability of at most 2 collisions.
pcollision x 2 = (n / capacity)2
...
Error in Swift class: Property not initialized at super.init call
...k 1 seems irrelevant,
But then there could be another scenario, a little bit complex,
class Shape {
var name: String
var sides : Int
init(sides:Int, named: String) {
self.sides = sides
self.name = named
printShapeDescription()
}
func printShapeDescript...
Centering a div block without the width
...o this today is actually to use flexbox rules. Browser support is a little bit more restricted (CSS table support vs flexbox support) but this method also allows many other things, and is a dedicated CSS rule for this type of behavior:
HTML:
<div class="container">
<div class="centered"...
Quicksort: Choosing the pivot
...e of the range. (better on partially sorted input)
However, picking any arbitrary element runs the risk of poorly partitioning the array of size n into two arrays of size 1 and n-1. If you do that often enough, your quicksort runs the risk of becoming O(n^2).
One improvement I've seen is pick med...
How to convert a data frame column to numeric type?
...es of variables to convert (or just more then one), you can use sapply.
A bit nonsensical but just for example:
data(cars)
cars[, 1:2] <- sapply(cars[, 1:2], as.factor)
Say columns 3, 6-15 and 37 of you dataframe need to be converted to numeric one could:
dat[, c(3,6:15,37)] <- sapply(dat...
How can I clear the SQL Server query cache?
...
While the question is just a bit old, this might still help. I'm running into similar issues and using the option below has helped me. Not sure if this is a permanent solution, but it's fixing it for now.
OPTION (OPTIMIZE FOR UNKNOWN)
Then your query ...
How many parameters are too many? [closed]
...
Thank you very much for all your answers:
It was a bit surprising to find people who also think (like I do) that 5 parameters is a good limit for the sanity of the code.
Generally, people tend to agree that a limit between 3 and 4 is good rule of thumb. This is reasonable as ...
Simple basic explanation of a Distributed Hash Table (DHT)
...aintenance.
Read the wikipedia page, and if you really want to know in a bit of depth, check out this coursepage at Harvard which has a pretty comprehensive reading list.
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Stop jQuery .load response from being cached
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edited Nov 17 '10 at 4:00
answered Oct 3 '08 at 21:26
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