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How to properly seed random number generator
...should also be noted that excluding 0 (zero) is a good idea because you're casting the byte slice to a string, and that causes the 0 to become a null byte. E.g., try creating a file with a '0' byte in the middle and see what happens.
– Eric Lagergren
Jun 27 '15...
How can I get the SQL of a PreparedStatement?
...
It doesn't work and throws ClassCastException: java.lang.ClassCastException: oracle.jdbc.driver.T4CPreparedStatement cannot be cast to com.mysql.jdbc.JDBC4PreparedStatement
– Ercan
Apr 4 '19 at 13:15
...
Intent - if activity is running, bring it to front, else start a new one (from notification)
...ificationCompat.Builder(THIS_CONTEXT)
.setSmallIcon(R.drawable.cast_ic_notification_0)
.setContentTitle("Title")
.setContentText("Content")
.setContentIntent(intent)
.setPriority(PRIORITY_HIGH) //private static final PRIORITY_HIGH = 5;
...
Why is the default value of the string type null instead of an empty string?
..., and (2) an unfortunate extra layer of boxing indirection any time it was cast to Object. Given that the heap representation of string is unique, having special treatment to avoid extra boxing wouldn't have been much of a stretch (actually, being able to specify non-default boxing behaviors would ...
How to detect if a variable is an array
...ies
'0' in Object(obj) // include array-likes with inherited entries
The cast to object is necessary to work correctly for array-like primitives (ie strings).
Here's the code for robust checks for JS arrays:
function isArray(obj) {
return Object.prototype.toString.call(obj) === '[object Arra...
How do I return rows with a specific value first?
...simply wrong. If at all it should read: "does not support MySQL's implicit casting of boolean true to the value 1 (one)."
– a_horse_with_no_name
Sep 25 '13 at 15:02
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How do I get a plist as a Dictionary in Swift?
... type Array<AnyObject>, but we know what type it really is so we can cast it to the correct type:
let dictArray = plist as! [[String:String]]
// [[String:String]] is equivalent to Array< Dictionary<String, String> >
And now we can access the various properties of our Array of St...
How are multi-dimensional arrays formatted in memory?
...
The code usually crashes at run-time when array of type int[N][M] is type-casted and then accessed as type int**, for example:
((int**)a1)[1][0] //crash on dereference of a value of type 'int'
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How and where are Annotations used in Java?
...s:
Class instance creation expression:
new @Interned MyObject();
Type cast:
myString = (@NonNull String) str;
implements clause:
class UnmodifiableList implements
@Readonly List<@Readonly T> { ... }
Thrown exception declaration:
void monitorTemperature() throws
@C...
Scala equivalent of Java java.lang.Class Object
... prevents me from passing in a Foo class by using Foo.getClass() without a cast.
Note: regarding getClass, a possible workaround would be:
class NiceObject[T <: AnyRef](x : T) {
def niceClass : Class[_ <: T] = x.getClass.asInstanceOf[Class[T]]
}
implicit def toNiceObject[T <: AnyRef](x ...