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Can a C# lambda expression have more than one statement?
Can a C# lambda expression include more than one statement?
8 Answers
8
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Merge / convert multiple PDF files into one PDF
How could I merge / convert multiple PDF files into one large PDF file?
18 Answers
18
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Generate all permutations of a list without adjacent equal elements
...ns safety.
The only way that a greedy step introduces a defect is if only one item type remains, in which case there is only one way to continue, and that way is safe. Otherwise, let P be the (safe) prefix just before the step under consideration, let P' be the prefix just after, and let S be an op...
Doctrine2: Best way to handle many-to-many with extra columns in reference table
...tself, and then you realize you have 3 objects, linked between them with a one-to-many and many-to-one relation.
http://groups.google.com/group/doctrine-user/browse_thread/thread/d1d87c96052e76f7/436b896e83c10868#436b896e83c10868
Once a relation has data, it's no more a relation !
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Elegant way to invert a map in Scala
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You can avoid the ._1 stuff while iterating in few ways.
Here's one way. This uses a partial function that covers the one and only case that matters for the map:
Map() ++ (origMap map {case (k,v) => (v,k)})
Here's another way:
import Function.tupled
Map() ++ (origMap map ...
Keep SSH session alive [closed]
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@user271996, why should one restart a daemon for a client-side setting?
– maxschlepzig
Jun 2 '15 at 15:40
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Constant Amortized Time
... There is a constant c, such that for
every sequence of operations (also one ending with a costly operation) of
length L, the time is not greater than
c*L (Thanks Rafał Dowgird)
share
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impr...
How to find and return a duplicate value in array
...}
I know this isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set.
Looking for faster solution? Here you go!
def find_one_using_hash_map(array)
map = {}
dup = nil
array.each do |v|
map[v] = (map[v...
Bitwise operation and usage
...se operators are operators that work on multi-bit values, but conceptually one bit at a time.
AND is 1 only if both of its inputs are 1, otherwise it's 0.
OR is 1 if one or both of its inputs are 1, otherwise it's 0.
XOR is 1 only if exactly one of its inputs are 1, otherwise it's 0.
NOT is 1 only...
Difference between using bean id and name in Spring configuration file
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From the Spring reference, 3.2.3.1 Naming Beans:
Every bean has one or more ids (also
called identifiers, or names; these
terms refer to the same thing). These
ids must be unique within the
container the bean is hosted in. A
bean will almost always have only one
id, but if a b...