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• How to Avoid Maven builds stall on ssh host authenticity problem?

  - by Peter Kahn

  What's the right way to keep ssh host authenticity from being a problem for maven and hudsno builds? I have hudson building my maven project on a VM. When the ESX server with my VMs on it is taxed some of my jobs will stall out stuck in a loop of ssh host authenticity problems. The hosts were in the known hosts file, but during these times the clocks on the slave VMs have drifted far from those of my maven repo. [INFO] Retrieving previous build number from snapshots The authenticity of host 'maven.mycorp.com' can't be established. DSA key fingerprint is 6d:....83. Are you sure you want to continue connecting? (yes/no): The authenticity of host 'maven.mycorp.com' can't be established. Is there something other than disabling host checking (CheckHostIP no)?

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• Setting a property value on each of the results in a FetchedResults set

  - by RickiG

  Hi On my Core Data Entity "Book" i have a boolean property, 'wasViewed' (NSNumber numberWithBool) that tells me if the Book was "viewed". I would like to implement a sort of "reset" this property for all my NSManagedObjects "Book". So that I can set them all to NO between sessions. I use an NSPredicate to retrieve all the Books like this: NSPredicate *predicate = [NSPredicate predicateWithFormat:@"wasViewed == %@", [NSNumber numberWithBool:YES]]; // code for setting entity, request etc... NSMutableArray *mutableFetchResults = [[[managedObjectContext executeFetchRequest:request error:&error] mutableCopy] autorelease]; This is working just fine, however, now I need to set up a loop, go through each Book object, something like this: for(Book *b in mutableFetchResults) { [b setWasViewed:NO] } Is there a way to perform an action on each element that fits the predicate instead of retrieving it? So instead of executeFetchRequest on a managedObjectContext it could be executeOperationOnFetchRequestResults or something along those lines. Thanks for any input given:)

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• Chain call in clojure?

  - by Konrad Garus

  I'm trying to implement sieve of Eratosthenes in Clojure. One approach I would like to test is this: Get range (2 3 4 5 6 ... N) For 2 <= i <= N Pass my range through filter that removes multiplies of i For i+1th iteration, use result of the previous filtering I know I could do it with loop/recur, but this is causing stack overflow errors (for some reason tail call optimization is not applied). How can I do it iteratively? I mean invoking N calls to the same routine, passing result of ith iteration to i+1th.

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• initialize a numpy array

  - by Curious2learn

  Is there way to initialize a numpy array of a shape and add to it? I will explain what I need with a list example. If I want to create a list of objects generated in a loop, I can do: a = [] for i in range(5): a.append(i) I want to do something similar with a numpy array. I know about vstack, concatenate etc. However, it seems these require two numpy arrays as inputs. What I need is: big_array # Initially empty. This is where I don't know what to specify for i in range(5): array i of shape = (2,4) created. add to big_array The big_array should have a shape (10,4). How to do this? Thanks for your help.

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• CakePHP 1.3 Plugin Shortcut Route

  - by Cake Baker

  Hi, I searched a lot around the web but I couldn't find any specific sollution to this. In CakePHP 1.3, different from 1.2, if you had a controller inside a plugin, and both had the same name, you could access through "<plugin>/<action>", and it would call the 'default' controller. But in 1.3, according to this: http://cakeqs.org/eng/questions/view/setting_up_magic_routes_for_plugins_in_cakephp_1_3 It was removed, and only the 'index' action in the default plugin controller can be accessed this way. I thought about adding extra code in my routes.php file, and loop through all the plugins in my app, making such routes for every action in the controllers named after the plugin, but it doesn't seem like it's the right thing to do... any other suggestions to make this work in 1.3? or at least some very specific code documentation of this particular change? I've already read something in the 1.3.0-RC4 annoucement, but it was not clear enough.. thanks

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• DEADLOCK_WRAP error when using Berkeley Db in python (bsddb)

  - by JiminyCricket

  I am using a berkdb to store a huge list of key-value pairs but for some reason when i try to access some of the data later i get this error: try: key = 'scrape011201-590652' contenttext = contentdict[key] except: print the error <type 'exceptions.KeyError'> 'scrape011201-590652' in contenttext = contentdict[key]\n', ' File "/usr/lib64/python2.5/bsddb/__init__.py", line 223, in __getitem__\n return _DeadlockWrap(lambda: self.db[key]) # self.db[key]\n', 'File "/usr/lib64/python2.5/bsddb/dbutils.py", line 62, in DeadlockWrap\n return function(*_args, **_kwargs)\n', ' File "/usr/lib64/python2.5/bsddb/__init__.py", line 223, in <lambda>\n return _DeadlockWrap(lambda: self.db[key]) # self.db[key]\n'] I am not sure what DeadlockWrap is but there isnt any other program or process accessing the berkdb or writing to it (as far as i know,) so not sure how we could get a deadlock, if its referring to that. Is it possible that I am trying to access the data to rapidly? I have this function call in a loop, so something like for i in hugelist: #try to get a value from the berkdb #do something with it I am running this with multiple datasets and this error only occurs with one of them, the largest one, not the others.

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• modifying a cloned element and reinserting in dom - jquery

  - by Praveen Prasad

  //dom <div id='toBeCloned'><span>Some name</span></div> <div id='targetElm'></div> //js $(function () { //creating a clone var _clone = $('#toBeCloned').clone(true); // target element var _target = $('#targetElm'); //now target element is to be filled with cloned element with data of span changed var _someData = [1, 2, 3, 4]; //loop through data $.each(_someData, function (i, data) { var _newElm = {}; $.extend(_newElm, _clone);//copy cloned to new Elm _newElm.find('span').html(data); //edit content of span alert('p'); // alert added to show that append in next line inspite of adding new element to dom just updating the previous one _target.append(_newElm);//update target }); }); expected Result: 1 2 3 4 resut iam getting is 4

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• Create a color generator in matplotlib

  - by Brendan

  I have a series of lines that each need to be plotted with a separate colour. Each line is actually made up of several data sets (positive, negative regions etc.) and so I'd like to be able to create a generator that will feed one colour at a time across a spectrum, for example the gist_rainbow map shown here. I have found the following works but it seems very complicated and more importantly difficult to remember, from pylab import * NUM_COLORS = 22 mp = cm.datad['gist_rainbow'] get_color = matplotlib.colors.LinearSegmentedColormap.from_list(mp, colors=['r', 'b'], N=NUM_COLORS) ... # Then in a for loop this_color = get_color(float(i)/NUM_COLORS) Moreover, it does not cover the range of colours in the gist_rainbow map, I have to redefine a map. Maybe a generator is not the best way to do this, if so what is the accepted way?

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• Passing parameters to a JQuery function.

  - by jmpena

  Hello, ive a problem using JQuery.. Im creating a HTML with a loop and it has a column for Action, that column is a HyperLink that when the user click the link call a JavaScript function and pass the parameters... example: <a href="#" OnClick="DoAction(1,'Jose');" > Click </a> <a href="#" OnClick="DoAction(2,'Juan');" > Click </a> <a href="#" OnClick="DoAction(3,'Pedro');" > Click </a> ... <a href="#" OnClick="DoAction(n,'xxx');" > Click </a> i want that function to Call an Ajax JQuery function with the correct parameters. any help ??

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• jQuery slide up/down on hover bug

  - by Eirik Lillebo

  Hi! I have one large div with one smaller div inside it. The smaller div is at first displayed as hidden. When the user hovers the mouse over the large container-div the smaller div is animated in with the show/hide-functions. So far everything works fine. However. The smaller div is animated in from the bottom - so if I let the cursor hover over the container at the very bottom, it's hovering over the animation of the smaller div while it's sliding in. So now the cursor is hovering over the smaller div instead of the larger div, and thus triggering the hide-function on the smaller div. This creates an infinite loop of show/hide calls as the smaller div slides in and out of where the cursor is pointing. Any ideas how to avoid this and not break the hovering on the container as the smaller div enters?

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• Preload *.wav with SystemSoundID?

  - by fuzzygoat

  I am playing a wav file to give a little audio feedback when a button in my UI is pressed. My question is when you first press the button there is a delay (about 1.5secs) whilst the sound file "sound.wav" is loaded and cached. Is there a way to pre-cache this file (maybe in my viewDidLoad)? I guess I could do it by just playing it a viewDidLoad, but would really need to disable the audio so it does not "beeb" each time the app starts. many thanks for and help. gary EDIT: Looks like my question is a duplicate of this post unless anyone has any new info? Maybe a way to turn the play volume down temporarily, unless the audio is cleared each time through the run loop.

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• Synchronisation construct inside pragma for

  - by Sayan Ghosh

  Hi, I have a program block like: for (iIndex1=0; iIndex1 < iSize; iIndex1++) { for (iIndex2=iIndex1+1; iIndex2 < iSize; iIndex2++) { iCount++; fDist =(*this)[iIndex1].distance( (*this)[iIndex2] ); m_oPDF.addPairDistance( fDist ); if ((bShowProgress) && (iCount % 1000000 == 0)) xyz_exception::ui()->progress( iCount, (size()-1)*((size()-1))/2 ); } } } } I have tried parallelising the inner and outer loop and by putting iCount in a critical region. What would be the best approach to parallelise this? If I wrap iCount with omp single or omp atomic then the code gives an error and I figured out that would be invalid inside omp for. I guess I am adding many extraneous stuffs to paralellise this. Need some advice... Thanks, Sayan

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• Craft a JSONpath expression so that it retrieves only a specific value?

  - by Alex

  Hello, I have some JSON of which the following is a small sample: results": { "div": [ { "class": "sylEntry", "id": "sylOne", "div": [ { "class": "sT", "id": "sOT", "p": "Mon 11/17, Computer work time" }, { "class": "des", "id": "dOne", "p": "All classes Siebel 0218" } ] }, I would like to only retrieve the "p" content for the div element with class "sT". I would like to use a loop and doing something like this: var arrayOfResults = $.results..div.p does not work because I only want to retrieve the p value for the div element with class "sT". So how do I construct my JSONpath so that it will retrive the array of p elements that are contained within the divs class "sT". Thanks!!

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• In SQL, in what situation do we want to Index a field in a table, or 2 fields in a table at the same

  - by Jian Lin

  In SQL, it is obvious that whenever we want to do a search on millions of record, say CustomerID in a Transactios table, then we want to add an index for CustomerID. Is another situation we want to add an index to a field when we need to do inner join or outer join using that field as a criteria? Such as Inner join on t1.custumerID = t2.customerID. Then if we don't have an index on customerID on both tables, we are looking at O(n^2) because we need to loop through the 2 tables sequentially. If we have index on customerID on both tables, then it becomes O( (log n) ^ 2 ) and it is much faster. Any other situation where we want to add an index to a field in a table? What about adding index for 2 fields combined in a table. That is, one index, for 2 fields together?

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• Anchoring the Action URL of a Form

  - by John

  Hello, I am using a function that leads users to a file called "comments2.php": <form action="http://www...com/.../comments/comments2.php" method="post"> On comments2.php, data passed over from the form is inserted into MySQL: $query = sprintf("INSERT INTO comment VALUES (NULL, %d, %d, '%s', NULL)", $uid, $subid, $comment); mysql_query($query) or die(mysql_error()); Then, later in comments2.php, I am using a query that loops through entries meeting certain criteria. The loop contains a row with the following information: echo '<td rowspan="3" class="commentname1" id="comment-' . $row["commentid"] . '">'.stripslashes($row["comment"]).'</td>'; For the function above, I would like the URL to be anchored by the highest value of "commentid" for id="comment-' . $row["commentid"] . '" How can this be done? Thanks in advance, John

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• google maps v3 distance

  - by Shane

  Trying to create a new version of the map functions seen here: http://www.daftlogic.com/projects-google-maps-distance-calculator.htm but using the v3 api. So far I am able to set markers on click and can draw the geodesic polyline. The issues I am currently running into are: Updating the poly-line on marker drag I'm pretty sure I have to put each marker in an array and do a for loop so that I can keep clicking and adding points that will add to the total distance. Properly displaying distance. I have created a jsfiddle: http://jsfiddle.net/wyZyS/ EDIT: I realize I have nothing calling the "update" function. I am trying to create the array for each marker currently. The calculation you see is converting meters to nautical miles.

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• Ruby: change each value in a hash with something like #collect for arrays?

  - by Adam Nonymous

  Hi! I'd like to replace each value in a hash with value.some_method. For example in a simple hash {"a" = "b", "c" = "d"} every value should be .upcase-d so it looks like {"a" = "B", "c" = "D"}. I tried #collect and #map but always just get arrays back. Is there an 'elegant' way to do this? Thanks in advance, Adam Nonymous UPDATE: Damn, I forgot: The hash is in an instance variable which should not be changed. I need a new hash with the changed values, but would prefer not to define that variable explicitly and then loop over the hash filling it. Something like new_hash = hash.magic {...} ;)

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• IE8 blocking JavaScript Cookies

  - by ossreleasefeed

  Hey there folks, Here is one that is throwing me for a loop. I am trying to set a simple cookie that has one name:value pair on IE8. Tested on FF and it works fine. IE8 keeps blocking it. I have read about the P3P stuff and created a basic P3P doc, no errors reported by the IBM tool, and added the following on all pages: <meta http-equiv="P3P" CP="CAO DSP COR PSDa CONi TELi OUR STP COM NAV"><link rel="P3Pv1" href="/w3c/p3p.xml"></link> The code I use to set the cookie is as follows: function setCompatibilityCookie(c_name, value, expiredays) { var exdate = new Date(); exdate.setDate(exdate.getDate() + expiredays); document.cookie= c_name + "=" + escape(value) + ((expiredays==null) ? "" : ";expires=" + exdate.toUTCString());} Any ideas why IE8 keeps blocking me from setting this cookie? Thank you, Schalk

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• Show only Parent Forums on bbPress front page

  - by Cameron

  I want to show only the very top level forums on my front page. I have tried: <?php if ( bb_forums("depth=1") ) : ?> But that didn't work and all the forums still show up. I only want to show the very top level, so for example if I have the following forums: Main - Sub Forum 1 - Sub Forum 2 --- Sub Forum 2.1 --- Sub Forum 2.1 - Sub Forum 3 Community - Sub Forum 1 - Sub Forum 2 --- Sub Forum 2.1 --- Sub Forum 2.1 - Sub Forum 3 Only Main and Community would appear on the home page. I would seem I need to create a custom loop on the front page that will only show the very top level forums, but I need some help. Thanks.

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• iPhone game audio and background music

  - by Boon

  Have a few questions related to adding sounds to my game, specifically intro music (for splash), background music (loop) and button event sounds. Hope you can share your knowledge on this. 1) Should I use compressed sounds or uncompressed sounds? Or perhaps a combination of the two? Are there any limitations on the iPhone hardware that I should be aware of -- for example, the ability to play multiple compressed sounds? 2) What's the best audio format for my purpose? 3) For background music, I am thinking of using AVAudioPlayer. For button event sounds, I am thinking of using AudioServicesPlaySystemSound, what do you think? 4) Any other issues I should be aware of? Thank you!

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• Making your class an event source in Java

  - by Crystal

  I'm making a custom button in Java that has two states, mousePressed, and mouseReleased. At the same time, if I wanted to reuse this button, so that other event listeners can register with it, are these the appropriate steps I should do: override addActionListener(ActionListener action) override removeActionListener(ActionListener action) have a private variable like List <ActionListener> list = new List <ActionListener>() to keep track of when events get added and some sort of function with for loop to run all the actions: public void runListeners() { for (ActionListener al : list) { al.actionPerfomed; } } I'm not really sure if this is the way you can do it or if there are other things I am missing. Like does my custom class have to be implements ActionListener? Thanks.

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• How do I detect when a cell's value has changed in Silverlight?

  - by jvenema

  Hey folks, I'm working in Silverlight, trying to figure out how to set a grid cell font color based on the contents of the cell. I have an ObservableCollection bound to a DataGrid, and my items implement INotifyPropertyChanged so the grid updates as I change the values; it's all working perfectly, including letting me sort items and keep the sorting while I update the underlying items. I know I can use the LoadingRow event to change colors, but the only way I can get the event to fire is by changing the grids datasource, in which case my sorting goes out the window. So, what I really want is a way to either 1) loop the rows in the datagrid, find the cell I need, and change it's color or 2) implement a custom column that I can use to dynamically set the color. The problem is how to actually do either of those things :) All suggestions welcome.

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• Adding to a multidimensional array in PHP

  - by b. e. hollenbeck

  I have an array being returned from the database that looks like so: $data = array(201 => array('description' => blah, 'hours' => 0), 222 => array('description' => feh, 'hours' => 0); In the next bit of code, I'm using a foreach and checking the for the key in another table. If the next query returns data, I want to update the 'hours' value in that key's array with a new hours value: foreach ($data as $row => $value){ $query = $db->query($sql); if ($result){ $value['hours'] = $result['hours']; } I've tried just about every combination of declarations for the foreach loop, but I keep getting the error that it's a non-object. Surely this is easier than my brain is perceiving it.

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• change view with onSensorChanged result

  - by tipu

  I have a view, set by setContentView(new CompassView(this)); I have the onDraw and update methods filled out. What I need to do with the view CompassView is update my view with the new data at the end of the call in the onSensorChanged method. The methods I have to fill out, I believe, are the surfaceChanged and surfaceCreated. They are normally using threads which takes care of the update and onDraw calls but I removed the thread because when the thread was enabled, in the infinite while loop I was never getting any azimuth value what so ever.

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• R counting the occurrences of similar rows of data frame

  - by Matt

  I have data in the following format called DF (this is just a made up simplified sample): eval.num, eval.count, fitness, fitness.mean, green.h.0, green.v.0, offset.0 random 1 1 1500 1500 100 120 40 232342 2 2 1000 1250 100 120 40 11843 3 3 1250 1250 100 120 40 981340234 4 4 1000 1187.5 100 120 40 4363453 5 1 2000 2000 200 100 40 345902 6 1 3000 3000 150 90 10 943 7 1 2000 2000 90 90 100 9304358 8 2 1800 1900 90 90 100 284333 However, the eval.count column is incorrect and I need to fix it. It should report the number of rows with the same values for (green.h.0, green.v.0, and offset.0) by only looking at the previous rows. The example above uses the expected values, but assume they are incorrect. How can I add a new column (say "count") which will count all previous rows which have the same values of the specified variables? I have gotten help on a similar problem of just selecting all rows with the same values for specified columns, so I supposed I could just write a loop around that, but it seems inefficient to me.

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