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Clojure 1.2.1/1.3/1.4 'proxy generated in Grails 2.0.0 runtime fails. 1.2.0 is fine
... an Issue called CLJ-944 on clojure.org. There you can find a fix for ClassCastException: clojure.lang.PersistentArrayMap cannot be cast to java.lang.Class issue
The problem is:
that the compiler injects an incorrect cast to
clojure.lang.PersistentHashMap. In this case it should probably be
...
Array.Copy vs Buffer.BlockCopy
...Copy() can perform very poorly here due to the continual "safe" value type casting, compared to the direct casting of Buffer.BlockCopy().
Additional evidence from outside StackOverflow that Array.Copy() is faster than Buffer.BlockCopy() for same-type array copying can be found here.
...
How to get current time in milliseconds in PHP?
... decimals
1409263371904
Note that both $mt[1] and the result of round are casted to int. This is necessary because they are floats and the operation on them without casting would result in the function returning a float.
Finally, that function is slightly more precise than
round(microtime(true)*100...
Why doesn't Java allow generic subclasses of Throwable?
...
Yes, but why isn't it flagged as "unsafe" then, as with casts for example?
– eljenso
Feb 1 '09 at 19:17
...
How can one print a size_t variable portably using the printf family?
...ode into a file that's compiled as C99. Otherwise, your only option is to cast your variables to unsigned long long and use %llu to be maximally portable.
– Adam Rosenfield
Apr 13 '10 at 1:52
...
Useful GCC flags for C
...-arith: warn if anything depends upon the size of a function or of void.
-Wcast-align: warn whenever a pointer is cast such that the required alignment of the target is increased. For example, warn if a char * is cast to an int * on machines where integers can only be accessed at two- or four-byte ...
How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
... XML PATH command.
SELECT [VehicleID]
, [Name]
, (STUFF((SELECT CAST(', ' + [City] AS VARCHAR(MAX))
FROM [Location]
WHERE (VehicleID = Vehicle.VehicleID)
FOR XML PATH ('')), 1, 2, '')) AS Locations
FROM [Vehicle]
It's a lot easier than using a cursor, and s...
PostgreSQL return result set as JSON array?
...t them:
SELECT to_jsonb(array_agg(t)) FROM t
or combine json_agg with a cast:
SELECT json_agg(t)::jsonb FROM t
My testing suggests that aggregating them into an array first is a little faster. I suspect that this is because the cast has to parse the entire JSON result.
9.2
9.2 does not have ...
C# - Keyword usage virtual+override vs. new
...a Bar, but we are storing it in a variable of type Foo (this is similar to casting it)
Then the result will be as follows, depending on whether you used virtual/override or new when declaring your classes.
share
...
Calling Java varargs method with single null argument?
...ray. For a single argument it assumes the latter.
You have two choices. Cast the null explicitly to Object or call the method using a strongly typed variable. See the example below:
public class Temp{
public static void main(String[] args){
foo("a", "b", "c");
foo(null, null);
...