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rsync: difference between --size-only and --ignore-times
...he rsync algorithm description: https://www.andrew.cmu.edu/course/15-749/READINGS/required/cas/tridgell96.pdf. The wikipedia article on rsync is also very good.
For local files, rsync compares metadata and if it looks like it doesn't need to copy the file because size and timestamp match between so...
What would a “frozen dict” be?
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Mike GrahamMike Graham
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Java HashMap performance optimization / alternative
... objects. That is an average of 1,300 objects per hash bucket = very very bad. However if I turn the two arrays into a number in base 52 I am guaranteed to get a unique hash code for every object:
public int hashCode() {
// assume that both a and b are sorted
return a[0] + pow...
How to create a memory leak in Java?
I just had an interview, and I was asked to create a memory leak with Java.
Needless to say, I felt pretty dumb having no clue on how to even start creating one.
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Large-scale design in Haskell? [closed]
...ring Large Projects in Haskell and in the Design and Implementation of XMonad. Engineering in the large is about managing complexity. The primary code structuring mechanisms in Haskell for managing complexity are:
The type system
Use the type system to enforce abstractions, simplifying interactio...
accepting HTTPS connections with self-signed certificates
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I would suggest using ThreadSafeClientConnManager instead of SingleClientConnManager
– Farm
May 24 '13 at 23:49
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Should I use SVN or Git? [closed]
...ht not even need these sorts of features yet. Have a look at the features, advantages and disadvantages of the distributed VCSes. If you need more than SVN offers, consider one. If you don't, you might want to stick with SVN's (currently) superior desktop integration.
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Fluid width with equally spaced DIVs
...iv>
You can use this for any arbitrary number of child divs without adding a boxN class to each one by changing
.box1, .box2, .box3, .box4 { ...
to
#container > div { ...
This selects any div that is the first child of the #container div, and no others below it. To generalize the bac...
What is the use of interface constants?
...g static members into an interface (and implementing that interface) is a bad practice and there is even a name for it, the Constant Interface Antipattern, see Effective Java, Item 17:
The constant interface pattern is a poor use of interfaces. That a class uses some constants internally is an i...
What is the difference between Digest and Basic Authentication?
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AndyAndy
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