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Why does volatile exist?
... You absolutely do NOT need to declare a variable volatile in order to be able to use InterlockedIncrement.
– curiousguy
Jun 28 '18 at 2:05
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What's the difference between equal?, eql?, ===, and ==?
...t: => true
Note that two arrays with the same elements in a different order are not equal, uppercase and lowercase versions of the same letter are not equal and so on.
When comparing numbers of different types (e.g., integer and float), if their numeric value is the same, == will return true....
Dynamically select data frame columns using $ and a character value
...the second is a data.frame
mtcars[[var]]
mtcars[var]
You can perform the ordering without loops, using do.call to construct the call to order. Here is a reproducible example below:
# set seed for reproducibility
set.seed(123)
df <- data.frame( col1 = sample(5,10,repl=T) , col2 = sample(5,10,r...
XmlSerializer: remove unnecessary xsi and xsd namespaces
...and replaced it with what follows:
// You have to use this constructor in order for the root element to have the right namespaces.
// If you need to do custom serialization of inner objects, you can use a shortened constructor.
XmlSerializer xs = new XmlSerializer(typeof(MyTypeWithNamespaces), new ...
Converting strings to floats in a DataFrame
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Omitting all xsi and xsd namespaces when serializing an object in .NET?
...and replaced it with what follows:
// You have to use this constructor in order for the root element to have the right namespaces.
// If you need to do custom serialization of inner objects, you can use a shortened constructor.
XmlSerializer xs = new XmlSerializer(typeof(MyTypeWithNamespaces), new ...
Is there an exponent operator in C#?
...em with this method though is that the exponent is calculated in the wrong order compared to other operators. This can be avoided by always putting an extra ( ) around the operation which again makes it a bit harder to read the equations:
DoubleX a = 2;
DoubleX b = 3;
Console.WriteLine($"a = {a}, b...
Why are #ifndef and #define used in C++ header files?
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How to think in data stores instead of databases?
... both these differences - is that Bigtable basically acts like an enormous ordered dictionary. Thus, a put operation just sets the value for a given key - regardless of any previous value for that key, and fetch operations are limited to fetching single keys or contiguous ranges of keys. More sophis...
What are the differences between numpy arrays and matrices? Which one should I use?
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