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• How are get and set methods on javabeans called by frameworks?

  - by testymctesttesttest

  If you have a bean with a getFoo method, how does whatever framework you're using know how to call the getFoo method when you ask for the value of foo? Is this done using the reflection API? Or is it somehow done using annotations? Obviously I know how you can derive the method given the name of the property, I just don't know how the method is invoked.

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• How do I list all files in a subdirectory in scala?

  - by Nick Fortescue

  Is there a good "scala-esque" (I guess I mean functional) way of recursively listing files in a directory? What about matching a particular pattern? For example recursively all files matching "a*.foo" in c:\temp.

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• slowing down a loop in a recursive function

  - by eco_bach

  I have a difficult problem with a recursive function. Essentially I need to 'slow down' a for loop within a function that repeatedly calls itself(the function); Is this possible, or do I need to somehow extract the recursive nature of the function? function callRecursiveFuncAgain(ob:Object):void{ //do recursive stuff; for (var i:int = 0; i < 4; i++) { _nextObj=foo callRecursiveFuncAgain(_nextObj); } }

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• recursive typedef

  - by FredOverflow

  Is the following allowed? typedef Foo<Bar> Bar; My compiler complains that 'class Bar' has a previous declaration as 'class Bar'.

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• Logger.setLevel() doesn't enable logging correctly

  - by ripper234

  Situation: I have this log4j logger: private static final Logger logger = Logger.getLogger(ThisClassName.class); And am trying to set it programatically through: Logger.getLogger(ThisClassName.class).setLevel(Level.DEBUG); Still, DEBUG level prints are swalloed (while INFO prints are printed successfully). Even this bit has no effect: Logger.getRootLogger().setLevel(Level.DEBUG); Calling logger.debug("foo") reaches Category.forcedLog() and ConsoleAppender.doAppend(), and then fails (quits) at: if(!isAsSevereAsThreshold(event.getLevel())) Any idea why this is happening?

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• Javascript syntax with () - function scope

  - by Fabien

  I am not very familiar with the Javascript syntax bellow. Can anyone shade light about the sense of this block? For what purpose? (function foo() { alert('bar'); })(); Thanks in advance.

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• Arguments to JavaScript Anonymous Function

  - by Phonethics

  for (var i = 0; i < somearray.length; i++) { myclass.foo({'arg1':somearray[i][0]}, function() { console.log(somearray[i][0]); }); } How do I pass somearray or one of its indexes into the anonymous function ? somearray is already in the global scope, but I still get somearray[i] is undefined

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• How to get the response of XMLHttpRequest?

  - by Rohan

  I'd like to know how to use XMLHttpRequest to load the content of a remote URL and have the HTML of the accessed site stored in a JS variable. Say, if I wanted to load and alert() the HTML of http://foo.com/bar.php, how would I do that?

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• Using sed and/or awk, how can do a sed swap on all text in a file until I see a line matching a reg

  - by Ross Rogers

  How can I do a sed regex swap on all text that preceed a line matching a regex. e.g. How can I do a swap like this s/foo/bar/g for all text that precedes the first point this regex matches: m/baz/ I don't want to use positive/negative look ahead/behind in my sed regex, because those are really expensive operations on big files.

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• rb plugin the hot key not working

  - by Bunny Rabbit

  def activate(self,shell): self.shell = shell self.action = gtk.Action ('foo','bar','baz',None) self.activate_id = self.action.connect ('activate', self.call_bk_fn,self.shell) self.action_group = gtk.ActionGroup ('hot_key_action_group') self.action_group.add_action_with_accel (self.action, "<control>E") uim = shell.get_ui_manager () uim.insert_action_group (self.action_group, 0) uim.ensure_update () def call_bk_fn(self,shell): print('hello world') i am using the above code in a plugin for rhythmbox ,and here i am trying to register the key ctr+e so that the call_bk_fn gets called whenever the key combination is pressed , but its not working why is that so ?

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• C# Attributes Aren't Supposed to Inherit

  - by Adam

  Since attributes don't inherit in C# (at least I didn't think they did) - how does the following code still display the Hello popup when the MyTestMethod test is run: [TestClass] public class BaseTestClass { [TestInitialize] public void Foo() { System.Windows.Forms.MessageBox.Show("Hello"); } } [TestClass] public class TestClass : BaseTestClass { [TestMethod] public void MyTestMethod() { Assert.IsTrue(true); } }

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• binlog_format = STATEMENT and CURRENT_TIMESTAMP with MySQL replication

  - by xma

  Hi, can a MySQL slave instance have different row values for the same ID when binlog_format is set to STATEMENT and we insert something like: insert into foo values(CURRENT_TIMESTAMP) As I understand it, the slave read the SQL statement and execute it thus, if the replication is lagging, could lead to differences for the same row. Right or wrong ? How can I avoid this situation ? Thank you.

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• What is DEFAULT_CC in function declaration?

  - by humoeba

  I'm relatively new to C, and am curious what this syntax means in a function declaration: int DEFAULT_CC foo(void) where DEFAULT_CC is probably defined somewhere else as: #define DEFAULT_CC "cc" Is this a direction to use a certain compiler or something?

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• Perl, sub with two lists as arguments

  - by Mike

  Is it possible to pass two lists to a sub in Perl , ex sub Foo { my(@list1,@list2) = @_; } I know I could make @_ two lists, with each sublist being the desired argument, I'm just wondering if there is a cleaner way

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• Is there a neater way to get the first occurrence of something?

  - by Phil H

  I have a list which contains a number of things: lista = ['a', 'b', 'foo', 'c', 'd', 'e', 'bar'] I'd like to get the first item in the list that fulfils a predicate, say len(item) > 2. Is there a neater way to do it than itertools' dropwhile and next? first = next(itertools.dropwhile(lambda x: len(x) <= 2, lista)) I did use [item for item in lista if len(item)>2][0] at first, but that requires python to generate the entire list first.

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• do you call them functions, procedures or methods?

  - by lowlyintern

  consider a standard c# 'function' public void foo() { //some code } In c or c++ this is called a 'function' - even if taking no parameters and returning no value. In another language maybe it would be a 'procedure'. In object orientation speak it would be called a 'method' if a class member. What would be the correct term to use in c#?

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• sql: delete a subtree table(id, Parentid) , delete a item with all his children

  - by Omu

  I have a table like this foo(id, parentId) -- there is a FK constraint from parentId to id and I need to delete an item with all his children and children of the children etc. anybody knows how ?

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• Which is the fastest idiomatic way to add all vectors (in the math sense) inside a Scala list?

  - by davips

  I have two solutions, but one doesn't compile and the other, I think, could be better: object Foo extends App { val vectors = List(List(1,2,3), List(2,2,3), List(1,2,2)) //just a stupid example //transposing println("vectors = " + vectors.transpose.map (_.sum)) //it prints vectors = List(4, 6, 8) //folding vectors.reduce { case (a, b) => (a zip b) map { case (x, y) => x + y } } //compiler says: missing parameter type for exp. function; arg. types must be fully known }

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• Using XMLHttpRequest ??

  - by Rohan

  Hey I'd like to know how to use XMLHttpRequest to load the content of a remote URL and have the HTML of the accessed site stored in a JS variable. Say, if I wanted to load and alert() the HTML of http://foo.com/bar.php, how would I do that? Thanks!

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• Regex issue in rewriter config

  - by sgbinks

  I'm having an issue with bad requests from certain search parameters. An example URL: http://www.foo.com/washington/forums/search/%26 Results in a bad request. The rewriter config line looks like this: <rewrite url="^(.*)/forums/search/(.*)" to="~/Pages/Forums/Overview.aspx?Address=$1&amp;q=$2" processing="stop" /> I'm thinking it's an issue with the Regex...? Thanks in advance!

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• In mysql or postgres, is there a limit to the size of an IN (1,2,n) statement?

  - by Kyle

  I've got quite a few SQL statements like such: SELECT foo FROM things WHERE user_id IN (1,2,3..n) Is there a known limit to the number of elements that will safely fit in an IN clause like that?

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• Determining if types alias to the same underlying type in C++

  - by emchristiansen

  I'd like to write a templated function which changes its behavior depending on template class types passed in. To do this, I'd like to determine the type passed in. For example, something like this: template <class T> void foo() { if (T == int) { // Sadly, this sort of comparison doesn't work printf("Template parameter was int\n"); } else if (T == char) { printf("Template parameter was char\n"); } } Is this possible?

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• How to iterate over function arguments

  - by Jack

  I have a Python function accepting several string arguments def foo(a, b, c): and concatenating them in a string. I want to iterate over all function arguments to check they are not None. How it can be done? Is there a quick way to convert None to ""? Thanks.

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• How to find size of individual columns and indexes in mysql/innodb database?

  - by taw

  SHOW TABLE STATUS LIKE 'foo' returns Data_length - size of all data, and Index_length - size of all indexes. What's the best way to get per-column and per-index breakdown?

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• Ubuntu Bash Script changing file names chronologicaly

  - by Manifold

  I have this bash script where I am trying to change all *.txt files in a directory to their date of last modification. This is the script: #!/bin/bash # Renames the .txt files to the date modified # FROM: foo.txt Created on: 2012-04-18 18:51:44 # TO: 20120418_185144.txt for i in *.txt do mod_date=$(stat --format %y "$i"|awk '{print $1"_"$2}'|cut -f1 -d'.'|sed 's/[: -]//g') mv "$i" "$mod_date".txt done The error I am getting is: renamer.sh: 6: renamer.sh: Syntax error: word unexpected (expecting "do") Any help would be greatly appreciated. Thank you for your time.

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