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Floating point vs integer calculations on modern hardware
...once is almost never useful. Just use the wider XMM / YMM versions to get more work done. Using SIMD integer and FP at the same time competes for the same registers, but x86-64 has 16 of them. But total throughput limits mean you can't get twice as much work done by using integer and FP execution...
The EXECUTE permission was denied on the object 'xxxxxxx', database 'zzzzzzz', schema 'dbo'
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Volatile Vs Atomic [duplicate]
... on that variable is atomic.
Notably, however, an operation that requires more than one read/write -- such as i++, which is equivalent to i = i + 1, which does one read and one write -- is not atomic, since another thread may write to i between the read and the write.
The Atomic classes, like Atom...
What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
...itelisting that was formerly included in ActiveRecord models, but it makes more sense for it to be in the controller.
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Draw radius around a point in Google map
... by changing the fillColor, strokeColor, strokeWeight etc (full API).
See more source code and example screenshots.
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Mediator Vs Observer Object-Oriented Design Patterns
...urce: dofactory
Example:
The observer pattern:
Class A, can have zero or more observers of type O registered with it. When something in A is changed it notifies all of the observers.
The mediator pattern:
You have some number of instances of class X (or maybe even several different types:X, Y &am...
Difference between JSON.stringify and JSON.parse
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error: ‘NULL’ was not declared in this scope
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Now that C++11 is more generally supported by compilers, it might be worth mentioning the nullptr keyword, which is an actual keyword and doesn't require any #includes. It's also more typesafe than NULL.
– templatetypedef...
“’” showing on page instead of “ ' ”
...orm submitted values which are incorrectly encoded/decoded.
Here are some more links to learn more about the problem:
The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!), from our own Joel.
Unicode - How to get the character...