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When to use a key/value store such as Redis instead/along side of a SQL database?
...ood it's purpose. After reading this I can actually say I understand Redis now and how it's useful. Amazing that after hearing so much about it all it took was a relatively simple article.
A quote from the article:
Redis is different than other database solutions in many ways: it uses memory a...
Configuring Log4j Loggers Programmatically
...s configured otherwise by setting the additivity flag).
If you need to know how logging works and how is decided where logs are written read this manual for more infos about that.
In Short:
Logger fizz = LoggerFactory.getLogger("com.fizz")
will give you a logger for the category "com.fizz".
...
How to get result of console.trace() as string in javascript with chrome or firefox?
...#<Object> has no method 'debug'
at eval at <anonymous> (unknown source)
at eval (native)
at Object._evaluateOn (unknown source)
at Object._evaluateAndWrap (unknown source)
at Object.evaluate (unknown source)
and in Firefox:
@http://www.google.com.ua/:87 _firebugInj...
MySQL, update multiple tables with one query
...rs. But there are too many books to go through each one and let's say you know that the ones that have an author_id that corresponds with an actual author are correct. It's just the ones that have nonexistent author_ids that are invalid. There is already an interface for the users to update the book...
Is it safe to ignore the possibility of SHA collisions in practice?
... crashes on Earth within the next second, obliterating civilization-as-we-know-it, and killing off a few billion people? It can be argued that any unlucky event with a probability lower than that is not actually very important.
If we have a "perfect" hash function with output size n, and we have p ...
How do I select the parent form based on which submit button is clicked?
...find the form of an input element. I wanted to add a note because there is now a better way than using:
var form = $(this).parents('form:first');
I'm not sure when it was added to jQuery but the closest() method does exactly what's needed more cleanly than using parents(). With closest the code c...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
...d and got my application crashed, later fixed it by changing to strong but now it has a memory leak. So, I changed it to weak and works like a charm.
– chathuram
Jan 22 '13 at 19:59
...
How to use Git properly with Xcode?
...Cocoa PList file, which is older, and defined a lot earlier than JSON, and now deprecated by Apple. (but they are still using it in some places) The mention about the file in the book is completely wrong. I removed down vote because you mentioned it explicitly.
– eonil
...
Is there a software-engineering methodology for functional programming? [closed]
... captured as higher-order functions. For example, the Visitor pattern is known in the functional world as a "fold" (or if you are a pointy-headed theorist, a "catamorphism"). In functional languages, data types are mostly trees or tuples, and every tree type has a natural catamorphism associated w...
Color in git-log
... Shahar (upvoted), git 1.8.3 offers one more option:
git log –format now sports a %C(auto) token that tells Git to use color when resolving %d (decoration), %h (short commit object name), etc. for terminal output.
This Atlassian blog post comments that this feature is part of several others ...