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Struct like objects in Java
...LATIVE math errors, as changes to individual components of polar coord are converted back to (x, y).
– ToolmakerSteve
Jun 17 '14 at 22:29
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Or versus OrElse
...> 3 Then
MsgBox("True")
End If
Result is: Error cannot convert string to double.
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Why does Assert.AreEqual(T obj1, Tobj2) fail with identical byte arrays
...h byte in the array and verify that they are equal. One way to do this is convert them to something that implements ICollection and use CollectionAssert.AreEqual() instead.
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Can pandas automatically recognize dates?
...tes recently.
you can use the date_parser parameter to pass a function to convert your format.
date_parser : function
Function to use for converting a sequence of string columns to an array of datetime
instances. The default uses dateutil.parser.parser to do the conversion.
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Is there a NumPy function to return the first index of something in an array?
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You can also convert a NumPy array to list in the air and get its index. For example,
l = [1,2,3,4,5] # Python list
a = numpy.array(l) # NumPy array
i = a.tolist().index(2) # i will return index of 2
print i
It will print 1.
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Why use the 'ref' keyword when passing an object?
...orm "Object #8675309"; they don't even hold anything that can meaningfully converted into a number. Even though each reference-type variable will hold some bit pattern, there is no fixed relationship between the bit patterns stored in such variables and the objects they identify. There is no way c...
Sort Dictionary by keys
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It is not possible as when you convert it back to dictionary it will change to the unordered collection as dictionaries in swift are unordered collection developer.apple.com/documentation/swift/dictionary
– Jaimin
Jul...
Min/Max-value validators in asp.net mvc
... }
public override bool IsValid(object value)
{
return Convert.ToDouble(value) >= _minValue;
}
public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
var rule = new ModelClientValid...
What is a stack trace, and how can I use it to debug my application errors?
...t: [com.example.myproject.MyEntity]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:96)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.id.insert.AbstractSelectingDelegate.performInsert(AbstractSelectingDele...
typecast string to integer - Postgres
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If the value contains non-numeric characters, you can convert the value to an integer as follows:
SELECT CASE WHEN <column>~E'^\\d+$' THEN CAST (<column> AS INTEGER) ELSE 0 END FROM table;
The CASE operator checks the < column>, if it matches the integer pat...