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What exactly is Arel in Rails 3.0?
...e?
Yes. For example, as I mentioned above, it is much easier to construct more complex queries from simpler parts.
will it lead to more efficient SQL queries?
Yes. The fact that ARel has a proper object model for the queries means that it can perform optimizations on those queries long before it ...
Graph visualization library in JavaScript
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There are two more noteworthy libraries that can be added to the list, namely Linkuroius.js and VivaGraphJS.
– Łukasz K
Jun 17 '17 at 18:05
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C++ mark as deprecated
...s compiler")
#define DEPRECATED(func) func
#endif
...
//don't use me any more
DEPRECATED(void OldFunc(int a, float b));
//use me instead
void NewFunc(int a, double b);
However, you will encounter problems if a function return type has a commas in its name e.g. std::pair<int, int> as this ...
What is the difference between the kernel space and the user space?
...kernel is doing things on behalf of a process (e.g., I/O) and at least one more kernel stack that's exclusively for internal use by the kernel (e.g., for scheduling).
– Jerry Coffin
May 10 '11 at 23:38
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Finding all possible permutations of a given string in python
... out that this is not what we'd traditionally think of as a type cast, but more of a call to the set() constructor.
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Copy array items into another array
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How do I read a text file of about 2 GB? [duplicate]
I have a .txt file whose memory is more than 2 GB. The problem is I cannot open it with Notepad, Notepad++ or any other editor programs.
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JavaScript equivalent to printf/String.Format
...itory of sprintf() for JavaScript was not available. underscore.string has more features aside from sprintf which is based on sprintf() for JavaScript implementation. Other than that the library is an entirely different project.
– Maksymilian Majer
Apr 15 '14 a...
Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh
...n your templates.
Placeholders - do velocity/freemaker give anything more than JSTL? In JSTL you put placeholder, and use the model (placed in request or session scope, by controllers) to fill these placeholders.
Yes, references are really the core of VTL:
<b>Hello $username!</b&gt...
Unicode character as bullet for list-item in CSS
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EDIT
I probably wouldn't recommend using images anymore. I'd stick to the approach of using a Unicode character, like this:
li:before {
content: "\2605";
}
OLD ANSWER
I'd probably go for an image background, they're much more efficient versatile and cross-browser-friend...