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Difference between a Factory, Provider and a Service?
...es classes, either by composing a bunch of bits together, or choosing type based on some kind of context
Provider: Provider is something microsoft "invented" (basically an abstract factory pattern) that is a way of doing a factory of factories, or having a common factory interface which allows fact...
Regex to get string between curly braces
...er at the string length minus one. This works because the position is zero-based, i.e. g.length-1 is the last position.
For readers other than the original poster: If it has to be a regex, use /{([^}]*)}/ if you want to allow empty strings, or /{([^}]+)}/ if you want to only match when there is at ...
Why generate long serialVersionUID instead of a simple 1L?
...object.
If the ID is omitted, Java will actually calculate the ID for you based on fields of the object, but I believe it is an expensive process, so providing one manually will improve performance.
Here's are a couple of links to articles which discuss serialization and versioning of classes:
J...
The transaction manager has disabled its support for remote/network transactions
...t the "Distributed Transaction Coordinator" Service is
running on both database and client.
Also make sure you check "Network DTC Access", "Allow Remote Client",
"Allow Inbound/Outbound" and "Enable TIP".
To enable Network DTC Access for MS DTC transactions
Open the Component Services snap-in.
T...
Drawing a dot on HTML5 canvas [duplicate]
...entation in my example is actually at least twice as fast as the ImageData based double buffering approach.
At least for my scenario it seems that the built-in ctx.getImageData/ctx.putImageData is in fact unbelievably SLOW. (It would be interesting to know the percentage of pixels that need to be ...
Understanding the Event Loop
...ad?" or "Hey OS, any of my outstanding filesystem calls have data ready?". Based upon its internal algorithm and event loop engine design, node will select one "tick" of JavaScript to execute, run it, then repeat the process all over again. That's what is meant by the event loop. Node is basically a...
Interfaces — What's the point?
...efore each call to Prepare will automatically prepare each pizza correctly based on its type, even if the collection has multiple types of pizzas.
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How to get Vim to highlight non-ascii characters?
...the added benefit of not colliding with regular (filetype [file extension] based) syntax definitions.
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postgresql list and order tables by size
How can I list all the tables of a PostgreSQL database and order them by size ?
7 Answers
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Good reasons to prohibit inheritance in Java?
...o for final methods.
To avoid derived class from overriding a particular base class functionality.
This is for security purpose, where base class is giving some important core functionality of the framework where derived class is not supposed to change it.
Final methods are faster than instance ...