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Class.forName() vs ClassLoader.loadClass() - which to use for dynamic loading? [duplicate]
...oadClass("..."); on a Class type to attempt to load a Torque peer class in order to run a static initializer block which maps the peer to a database table. The static block was not executed on this call. However, upon calling Class.forName("..."); for the peer class the static block was executed. +1...
How can we match a^n b^n with Java regex?
...our definition of "good". For example the recursive solution is around one order of magnitude faster than the other one (codepad.viper-7.com/CWgy7c). And it is far easier to understand. The recursive solution is pretty much the direct transformation of the grammar into a regex (actually you could ju...
Does Python have an ordered set?
Python has an ordered dictionary . What about an ordered set?
14 Answers
14
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What JSON library to use in Scala? [closed]
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There are quite a variety of alternatives. I list them in no particular order, with notes:
parsing.json.JSON - Warning this library is available only up to Scala version 2.9.x (removed in newer versions)
spray-json - Extracted from the Spray project
Jerkson ± - Warning a nice library (built on...
How do I use ROW_NUMBER()?
...f you returned Row_Number() in your main query,
SELECT ROW_NUMBER() OVER (Order by Id) AS RowNumber, Field1, Field2, Field3
FROM User
Then when you want to go 5 rows back then you can take the current row number and use the following query to determine the row with currentrow -5
SELECT us.Id
FRO...
Sort a Map by values
...dHashMap is important to the solution as it provides predictable iteration order.
– Carter Page
Jul 1 '12 at 12:46
3
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Why are mutable structs “evil”?
...foo, which it can use modify the fields of foo any number of times, in any order, until it returns, but it can't persist that reference. Before Method2 returns, unless it uses unsafe code, any and all copies that might have been made of its 'foo' reference will have disappeared. Method3, unlike Me...
How to quickly check if folder is empty (.NET)?
... You need to add SetLastError = true to the DllImport for FindFirstFile in order for the Marshal.GetHRForLastWin32Error() call to work correctly, as described in the Remarks section of the MSDN doc for GetHRForLastWin32Error().
– Joel V. Earnest-DeYoung
Jun 19 ...
Android - implementing startForeground for a service?
...oid runAsForeground(){
Intent notificationIntent = new Intent(this, RecorderMainActivity.class);
PendingIntent pendingIntent=PendingIntent.getActivity(this, 0,
notificationIntent, Intent.FLAG_ACTIVITY_NEW_TASK);
Notification notification=new NotificationCompat.Builder(this)
...
How to determine if a number is a prime with regex?
...to find some non empty sub-sequence that can be repeated at least twice in order to form the sequence. If such a subsequence exists, it means that its length divides N, hence N is not prime.
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