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multiple definition of template specialization when using different objects
...p violating the one definition rule as David says. Note that when you partially specialize templates, the partial specializations do still depend on one or more template parameters, so they still go in a .h file.
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How to exclude certain directories/files from git grep search
...va files from under your current directory).
There's a good reference for all the "magic words" allowed in a pathspec at git-scm.com (or just git help glossary). For some reason, the docs at kernel.org are really out of date even though they often come up first in google searches.
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“new” keyword in Scala
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Is it when we try to instantiate java objects only?
Not at all. There is two general cases when you ommit new in scala.
With singleton objects (that are oftenly used to store static functions and as a kind of factory similar to what you may seen in java):
scala> object LonelyGuy ...
The differences between .build, .create, and .create! and when should they be used?
...< 3.x
The most important part, however, is that these methods can be called through an association (has_many, etc.) to automatically link the two models.
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What's the difference between IComparable & IEquatable interfaces?
...eckles or their weight. Hence, we would implement different IComparers for all these cases.
– Konrad Rudolph
Mar 9 '10 at 19:08
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How can I easily view the contents of a datatable or dataview in the immediate window
... four standard visualizers. These are the text, HTML, and XML visualizers, all of which work on string objects, and the dataset visualizer, which works for DataSet, DataView, and DataTable objects.
To use it, break into your code, mouse over your DataSet, expand the quick watch, view the Tables, ex...
make_unique and perfect forwarding
... A make_unique function template does not itself guarantee exception safe calls. It relies on convention, that the caller uses it. In contrast, strict static type checking (which is the main diff between C++ and C) is built on the idea of enforcing safety, via types. And for that, make_unique can si...
How to put a label on an issue in GitHub if you are not a contributor / owner?
...categories. They can help you to mark priority and such. If everyone were allowed to label their issues, this structure would be lost.
– Noctua
Dec 11 '12 at 22:26
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How to make Java honor the DNS Caching Timeout?
...rkaddress.cache.negative.ttl as System Properties by using the -D flag or calling System.setProperty because these are not System properties - they are Security properties.
If you want to use a System property to trigger this behavior (so you can use the -D flag or call System.setProperty), you wil...
C# switch statement limitations - why?
...a big if-else statement.
Each case must be unique and evaluated
statically. The switch statement does
a constant time branch regardless of
how many cases you have. The if-else
statement evaluates each condition
until it finds one that is true.
In fact, the C# switch statement is n...