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What is the difference between JDK dynamic proxy and CGLib?
...ies. Another distinction is in the "stack" cost. A JDK proxy always incurs extra stack frames per call while a CGLib may not cost any extra stack frames. This becomes increasingly relevant the more complex the app gets (because the larger the stack, the more memory threads consume).
...
How to remove the left part of a string?
I have some simple python code that searches files for a string e.g. path=c:\path , where the c:\path part may vary. The current code is:
...
What does “Could not find or load main class” mean?
...with signature, return type and modifiers given by public static void main(String[]). (Note, the method argument's name is NOT part of the signature.)
Call that method passing it the command line arguments ("fred", "joe", "bert") as a String[].
Reasons why Java cannot find the class
When you get...
Functional programming - is immutability expensive? [closed]
...ject QSortExample {
// Imperative mutable quicksort
def swap(xs: Array[String])(a: Int, b: Int) {
val t = xs(a); xs(a) = xs(b); xs(b) = t
}
def muQSort(xs: Array[String])(l: Int = 0, r: Int = xs.length-1) {
val pivot = xs((l+r)/2)
var a = l
var b = r
while (a <= b) {
...
Read entire file in Scala?
...
val lines = scala.io.Source.fromFile("file.txt").mkString
By the way, "scala." isn't really necessary, as it's always in scope anyway, and you can, of course, import io's contents, fully or partially, and avoid having to prepend "io." too.
The above leaves the file open, h...
How do I export UIImage array as a movie?
...on.screenWidth;
// You can save a .mov or a .mp4 file
//NSString *fileNameOut = @"temp.mp4";
NSString *fileNameOut = @"temp.mov";
// We chose to save in the tmp/ directory on the device initially
NSString *directoryOut = @"tmp/";
NSString *outFile = [NSString string...
What does `:_*` (colon underscore star) do in Scala?
...plats"1 the sequence.
Look at the constructor signature
new Elem(prefix: String, label: String, attributes: MetaData, scope: NamespaceBinding,
child: Node*)
which is called as
new Elem(prefix, label, attributes, scope,
child1, child2, ... childN)
but here there is only a seq...
SyntaxError: Non-ASCII character '\xa3' in file when function returns '£'
...f your .py file. To get more advanced, you can also define encodings on a string by string basis in your code. However, if you are trying to put the pound sign literal in to your code, you'll need an encoding that supports it for the entire file.
...
What is “callback hell” and how and why does RX solve it?
...appens after B is called listening to 'aFinished'. You can then easily add extra steps or extend this kind of behaviour, and can easily test that your code executes in order by merely broadcasting events in your test case.
s...
How to step through Python code to help debug issues?
...;> import pdb
>>> pdb.run('pdb_script.MyObj(5).go()')
> <string>(1)<module>()
(Pdb)
C. From Within Your Program
For a big project and long-running module, can start the debugging from inside the program using
import pdb and set_trace()
like this :
#!/usr/bin/env pytho...