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How would you implement an LRU cache in Java?
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I like lots of these suggestions, but for now I think I'll stick with LinkedHashMap + Collections.synchronizedMap. If I do revisit this in the future, I'll probably work on extending ConcurrentHashMap in the same way LinkedHashMap extends HashMap.
UPDATE:
By reques...
Hide separator line on one UITableViewCell
...rmally
cell.indentationLevel = 1 // must add this, otherwise default is 0, now actual indentation = indentationWidth * indentationLevel = 10000 * 1 = -10000
and the effect is:
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Ruby: extend self
...ways helps to think of extend as include inside the singleton class (also known as meta or eigen class).
You probably know that methods defined inside the singleton class are basically class methods:
module A
class << self
def x
puts 'x'
end
end
end
A.x #=> 'x'
Now th...
Static variables in member functions
...only to those types. e.g. template<typename T> void foo (T t) {...}. Now for foo<int> there will be a static int i (say foo<int>::i) and separate for foo<string> there will be a separate static int i (say foo<string>::i) and so on. i will be incremented separately for f...
How to make a copy of a file in android?
...d I found the problem was missing permission to write to external storage. now it works fine.
– A S
Feb 16 '12 at 9:51
8
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JOIN queries vs multiple queries
...book often goes for the more complex solution for minute performance gains now, but then most of us aren't programming Facebook.
– dallin
Oct 16 '18 at 20:21
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Making a property deserialize but not serialize with json.net
...lization because there is no way for the GetSerializableMembers method to know if it's a read or write so you're excluding the properties for both. this solution does not work.
– Matt M
Mar 16 '18 at 14:41
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Undo working copy modifications of one file in Git?
... ic thanks for clearing that up. everyone just assumes you know what -- means when they show you examples. and its not something you can google easily too.
– Patoshi パトシ
Mar 4 '15 at 18:05
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What's the point of having pointers in Go?
I know that pointers in Go allow mutation of a function's arguments, but wouldn't it have been simpler if they adopted just references (with appropriate const or mutable qualifiers). Now we have pointers and for some built-in types like maps and channels implicit pass by reference.
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What's the best way to do a backwards loop in C/C#/C++?
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Instead of doing
(sizeof a / sizeof *a)
Change your code so that it now does
(sizeof array_size(a))
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