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What is uintptr_t data type
...
Another common use case of casting a pointer to an int is to create an opaque handle that hides the pointer. This is useful for returning a reference to an object from APIs where you want to keep the object private to the library and prevent applicati...
Postgresql GROUP_CONCAT equivalent?
...ROM data_table
GROUP BY id_field
array_agg returns an array, but you can CAST that to text and edit as needed (see clarifications, below).
Prior to version 8.4, you have to define it yourself prior to use:
CREATE AGGREGATE array_agg (anyelement)
(
sfunc = array_append,
stype = anyarray,
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Why can I type alias functions and use them without casting?
...hat clarifies the type lark a little for someone else! And means much less casting than I at first thought :)
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How do I use the CONCAT function in SQL Server 2008 R2?
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I suggest you cast all columns before you concat them
cast('data1' as varchar) + cast('data2' as varchar) + cast('data3' as varchar)
This should work for you.
s...
How do I convert a decimal to an int in C#?
...an also use Decimal.ToInt32. Again, see MSDN. Finally, you can do a direct cast as in
decimal value = 3.14m;
int n = (int) value;
which uses the explicit cast operator. See MSDN.
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Convert Long into Integer
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Why would you cast twice when you can just call intValue instead ? Plus it is going to unbox to long, cast to int, and rebox to Integer, which does not seem very useful. I don't see the point on top of my head, do you have a good reason fo...
How to check that an object is empty in PHP?
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You can cast to an array and then check if it is empty or not
$arr = (array)$obj;
if (!$arr) {
// do stuff
}
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Get int value from enum in C#
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Just cast the enum, e.g.
int something = (int) Question.Role;
The above will work for the vast majority of enums you see in the wild, as the default underlying type for an enum is int.
However, as cecilphillip points out, enum...
How to return multiple objects from a Java method?
...pressWarnings("unchecked")
public static <P, Q> Pair<P, Q> cast(Pair<?, ?> pair, Class<P> pClass, Class<Q> qClass) {
if (pair.isInstance(pClass, qClass)) {
return (Pair<P, Q>) pair;
}
throw new ClassCastException();
}...
SQL - Rounding off to 2 decimal places
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Could you not cast your result as numeric(x,2)? Where x <= 38
select
round(630/60.0,2),
cast(round(630/60.0,2) as numeric(36,2))
Returns
10.500000 10.50
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