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ArrayList vs List in C#
... is a generic class. It supports storing values of a specific type without casting to or from object (which would have incurred boxing/unboxing overhead when T is a value type in the ArrayList case). ArrayList simply stores object references. As a generic collection, List<T> implements the gen...
Why does (0 < 5 < 3) return true?
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My guess is because 0 < 5 is true, and true < 3 gets cast to 1 < 3 which is true.
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How do I convert an integer to string as part of a PostgreSQL query?
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Because the number can be up to 15 digits, you'll meed to cast to an 64 bit (8-byte) integer. Try this:
SELECT * FROM table
WHERE myint = mytext::int8
The :: cast operator is historical but convenient. Postgres also conforms to the SQL standard syntax
myint = cast ( mytext as i...
How to get C# Enum description from value? [duplicate]
...The default underlying data type for an enum in C# is an int, you can just cast it.
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How to serialize a lambda?
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Java 8 introduces the possibility to cast an object to an intersection of types by adding multiple bounds. In the case of serialization, it is therefore possible to write:
Runnable r = (Runnable & Serializable)() -> System.out.println("Serializable!");
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How can I get the actual stored procedure line number from an error message?
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@ErrorMessage = ERROR_MESSAGE() + ' occurred at Line_Number: ' + CAST(ERROR_LINE() AS VARCHAR(50)),
@ErrorSeverity = ERROR_SEVERITY(),
@ErrorState = ERROR_STATE();
RAISERROR (@ErrorMessage, -- Message text.
@ErrorSeverity, -- Severity.
@ErrorState -- State.
);
END...
How to calculate percentage with a SQL statement
...u put it after the division operation you would have to make sure that you cast to a data type that can handle the decimal places otherwise you will end up with 100 or 0 and never an actual percentage
– Matt
Sep 20 '16 at 23:42
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What's the difference between std::move and std::forward
...a new value and continue using it.
std::forward has a single use case: to cast a templated function parameter (inside the function) to the value category (lvalue or rvalue) the caller used to pass it. This allows rvalue arguments to be passed on as rvalues, and lvalues to be passed on as lvalues, a...
Convert character to ASCII numeric value in java
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Very simple. Just cast your char as an int.
char character = 'a';
int ascii = (int) character;
In your case, you need to get the specific Character from the String first and then cast it.
char character = name.charAt(0); // This gives...
How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif
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@Pim ...continued: Look at it this way: Casting to a BOOL, any value only has to fall on one of two sides, true or false. That's easy to cast. All other values though have, for all practical purposes, virtually unlimited combinations. Is "five" == 5? array(0) == 0?...