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How can I pair socks from a pile efficiently?
...e them onto the color piles.
Iterate over each pile and distribute it by some other metric (e.g. pattern) into the second set of piles
Recursively apply this scheme until you have distributed all socks onto very small piles that you can visually process immediately
This kind of recursive hash part...
How do I pass variables and data from PHP to JavaScript?
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There are actually several approaches to do this. Some require more overhead than others, and some are considered better than others.
In no particular order:
Use AJAX to get the data you need from the server.
Echo the data into the page somewhere, and use JavaScript to get ...
Database, Table and Column Naming Conventions? [closed]
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I recommend checking out Microsoft's SQL Server sample databases:
https://github.com/Microsoft/sql-server-samples/releases/tag/adventureworks
The AdventureWorks sample uses a very clear and consistent naming convention that uses sc...
How to REALLY show logs of renamed files with git?
.... You put content in a git repository because the content as a whole has a meaningful history.
A file rename is a small special case of "content" moving between paths. You might have a function that moves between files which a git user might trackdown with "pickaxe" functionalitly (e.g. log -S).
O...
mongoose vs mongodb (nodejs modules/extensions), which better? and why?
... yourself is, "Do I want to use the raw driver, or do I need an object-document modeling tool?" If you're looking for an object modeling (ODM, a counterpart to ORMs from the SQL world) tool to skip some lower level work, you want Mongoose.
If you want a driver, because you intend to break a lot of ...
How do emulators work and how are they written? [closed]
How do emulators work? When I see NES/SNES or C64 emulators, it astounds me.
16 Answers
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When is an interface with a default method initialized?
...1
j=3
jj=4
3
and indeed I get the expected output. However, if a default method is added to interface I,
interface I {
int i = 1, ii = Test.out("ii", 2);
default void method() { } // causes initialization!
}
the output changes to:
1
ii=2
j=3
jj=4
3
which clearly indicates that interf...
How to find out client ID of component for ajax update/render? Cannot find component with expression
The following code is inspired from PrimeFaces DataGrid + DataTable Tutorials and put into a <p:tab> of a <p:tabView> residing in a <p:layoutUnit> of a <p:layout> . Here is the inner part of the code (starting from p:tab component); the outer part is trivial.
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SHA1 vs md5 vs SHA256: which to use for a PHP login?
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Neither. You should use bcrypt. The hashes you mention are all optimized to be quick and easy on hardware, and so cracking them share the same qualities. If you have no other choice, at least be sure to use a long salt and re-hash multiple times.
Using bcrypt in PHP 5.5+...
Integrating the ZXing library directly into my Android application
I'm writing this in mere desperation :) I've been assigned to make a standalone barcode scanner (as a proof of concept) to an Android 1.6 phone.
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