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Cast a Double Variable to Decimal
...ited to keep an exact value, so if you first add numbers together and then convert to Decimal you may get rounding errors. You may want to convert the numbers to Decimal before adding them together, or make sure that the numbers aren't floating point numbers in the first place.
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Pandas convert dataframe to array of tuples
...I want to carry out a batch save back to the database. This requires me to convert the dataframe into an array of tuples, with each tuple corresponding to a "row" of the dataframe.
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Convert python datetime to epoch with strftime
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If you want to convert a python datetime to seconds since epoch you could do it explicitly:
>>> (datetime.datetime(2012,04,01,0,0) - datetime.datetime(1970,1,1)).total_seconds()
1333238400.0
In Python 3.3+ you can use timestamp(...
Apache Commons equals/hashCode builder [closed]
...yd The Guava-way not only creates an array object for the varargs, it also converts ALL parameters to objects. So when you pass 10 int values to it then you will end up with 10 Integer objects and an array object. The commons-lang solution only creates a single object, no matter how many values you ...
Java Byte Array to String to Byte Array
...yte[] to string, string representation of byte[] to byte[] conversion... I convert my byte[] to a string to send, I then expect my web service (written in python) to echo the data straight back to the client.
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Using LINQ to remove elements from a List
... for( int i = 0; i < size; i++ )
{
ch = Convert.ToChar( Convert.ToInt32( Math.Floor( 26 * random.NextDouble() + 65 ) ) );
builder.Append( ch );
}
return builder.ToString();
}
}
}
Results below:
Be patient, gen...
machine learning libraries in C# [closed]
...; example.Count; i++)
{
instance.setValue(attributes[i], Convert.ToDouble(example[i]));
}
instances.add(instance);
}
return instances;
}
}
public static class Classifier
{
public static TClassifier Build<TClassifier>(TrainingSet training...
what is Segmentation fault (core dumped)? [duplicate]
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Also, since you're passing in a float to printf (which, by the way, gets converted to a double when passing to printf), you should use the %f format specifier. The %s format specifier is for strings ('\0'-terminated character arrays).
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Joining two lists together
...ne I think so. As previously said, Concat returns a new sequence and while converting the result to List, it does the job perfectly. Implicit conversions may fail sometimes when using the AddRange method.
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Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
...a perfectly good way of doing integer powers (with doubles and then simply converting back to an integer, checking for integer overflow and underflow before converting).
Second, another thing you have to remember is that the original intent of C was as a systems programming language, and it's quest...