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How to write an expression for an attribute?
Description: If the expression is null or an empty string, then the IsNullOrEmpty function returns true. For an attribute, this would evaluate to True if the attribute is absent or is present but is an empty string. The inverse of this function is named IsPresent.
How are buffers maintained in a StringBuilder class?
A StringBuilder object maintains a buffer to accommodate expansions to the string. New data is appended to the buffer if room is available; otherwise, a new, larger buffer is allocated, data from the original buffer is copied to the new buffer, and the new data is then appended to the new buffer.
What is the default capacity of the StringBuilder object?
The default capacity of this object is 16 characters, and its maximum capacity is more than 2 billion characters. Appending the string “This is a sentence.” results in a new memory allocation because the string length (19 characters) exceeds the default capacity of the StringBuilder object.
How to expand the contents of a StringBuilder class?
The StringBuilder class includes the following methods for expanding the contents of a StringBuilder object: The Append method appends a string, a substring, a character array, a portion of a character array, a single character repeated multiple times, or the string representation of a primitive data type to a StringBuilder object.
What is the use of the description attribute?
I can even see a custom description attribute class that retrieves the description from a database. The use cases are there. Another more common use case for this method is to localize the values returned by using resource files, representing the languages you want to display.
When to use the description attribute in Enum?
The use cases are there. Another more common use case for this method is to localize the values returned by using resource files, representing the languages you want to display. You could have one for en-US, en-GB, es-ES, es-MX, etc., using the description Name as the key to the resource file.
When to use DEFAULT value in attribute mapping?
If all arguments are NULL and defaultValue is present, the defaultValue will be returned. If all arguments are NULL and defaultValue is not present, Coalesce returns NULL. Required, variable-number of times. Usually name of the attribute from the source object. Default value to be used when all source values are NULL.