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How to return an empty ActiveRecord relation?
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There is a now a "correct" mechanism in Rails 4:
>> Model.none
=> #<ActiveRecord::Relation []>
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What Java ORM do you prefer, and why? [closed]
...oo many to be managed efficiently and there are behaviors that could drive one crazy. On the other hand i have support for major databases and never have to worry about their differences.
– marcolopes
Mar 5 '11 at 13:03
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Pimpl idiom vs Pure virtual class interface
..." instances of the class at all. When it does make sense, a polymorphic "Clone" method is usually more appropriate. Examples: A Socket class, a Database class, a "policy" class, anything that would be a "closure" in a functional language.
Both pImpl and pure abstract base class are techniques to ...
Why does ReSharper want to use 'var' for everything?
...mendations on SO). To try it out I opened up a recent ASP.NET MVC project. One of the first and most frequent things I've noticed it suggesting is to change most/all my explicit declarations to var instead. For example:
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How to give border to any element using css without adding border-width to the whole width of elemen
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I've added an answer that allows you to border just one side.
– mikevoermans
May 3 '13 at 16:22
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Which is more preferable to use: lambda functions or nested functions ('def')?
... a def, just to be more readable. If the function is more complex than the ones at operator module, a def is probably better.
So, real world good lambda use cases are very rare.
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MySQL ON vs USING?
...t a couple differences are noteworthy:
ON is the more general of the two. One can join tables ON a column, a set of columns and even a condition. For example:
SELECT * FROM world.City JOIN world.Country ON (City.CountryCode = Country.Code) WHERE ...
USING is useful when both tables share a colum...
What is a fat JAR? [duplicate]
...erent build systems fat jar is created differently, for example, in Gradle one would create it with (instruction):
task fatJar(type: Jar) {
manifest {
attributes 'Main-Class': 'com.example.Main'
}
baseName = project.name + '-all'
from { configurations.compile.collect { it.is...
Uppercase or lowercase doctype?
...itle>. Only a few HTML validators use SGML. The HTML5 spec is the first one to clarify this: whatwg.org/specs/web-apps/current-work/multipage/…
– Mathias Bynens
Feb 4 '12 at 10:18
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What good technology podcasts are out there?
...t
Ajaxian Podcast
Pragmatic Podcasts
Channel 9 Audio Feed
EDIT: Missed one:
Elegant Code Cast
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edited Aug 14 '08 at 12:17
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