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• PHP Force Download Causing 0 Byte Files

  - by Alex

  Hey, I'm trying to force download files from my web server using PHP. I'm not a pro in PHP but I just can't seem to get around the problem of files downloading in 0 bytes in size. CODE: $filename = "FILENAME..."; header("Content-type: $type"); header("Content-Disposition: attachment;filename=$filename"); header("Content-Transfer-Encoding: binary"); header('Pragma: no-cache'); header('Expires: 0'); set_time_limit(0); readfile($file); Can anybody help? Thanks.

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• Reading file data during form's clean method

  - by Dominic Rodger

  So, I'm working on implementing the answer to my previous question. Here's my model: class Talk(models.Model): title = models.CharField(max_length=200) mp3 = models.FileField(upload_to = u'talks/', max_length=200) Here's my form: class TalkForm(forms.ModelForm): def clean(self): super(TalkForm, self).clean() cleaned_data = self.cleaned_data if u'mp3' in self.files: from mutagen.mp3 import MP3 if hasattr(self.files['mp3'], 'temporary_file_path'): audio = MP3(self.files['mp3'].temporary_file_path()) else: # What goes here? audio = None # setting to None for now ... return cleaned_data class Meta: model = Talk Mutagen needs file-like objects - the first case (where the uploaded file is larger than the size of file handled in memory) works fine, but I don't know how to handle InMemoryUploadedFile that I get otherwise. I've tried: # TypeError (coercing to Unicode: need string or buffer, InMemoryUploadedFile found) audio = MP3(self.files['mp3']) # TypeError (coercing to Unicode: need string or buffer, cStringIO.StringO found) audio = MP3(self.files['mp3'].file) # Hangs seemingly indefinitely audio = MP3(self.files['mp3'].file.read()) Is there something wrong with mutagen, or am I doing it wrong?

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• Alternative to latex / a way to typeset good looking documents from Java to PDF

  - by drasto

  I'm working on application in Java that will maintain database of song lyrics in plain text and print out some songbooks/chordbooks(that is create PDF file from selected songs). I was planing that the Java application will generate source code for pdflatex and after compiling this source user will get PDF file. Lately I've run into a lot of problems because of latex limitation: fixed memory size (some pictures will also be drawn to PDF) - error when exceeded, no way to query end of line or and of page dynamically, it's very hard to override latex placement algorithm in a complex way,... see also some my other questions regarding latex. I come to conclusion that latex is not good option for automated PDF generation. So I need replacement. I need to be able to typeset: Chords over lyrics when the lyrics are in variable char width so I need to be able to measure text width Chord diagrams that means I'll have to draw quite complex pictures Each song on separate double page Different fonts etc. Thanks for all answers

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• Efficiency: Creating an array of doubles incrementally?

  - by Alan

  Consider the following code: List<double> l = new List<double>(); //add unknown number of values to the list l.Add(0.1); //assume we don't have these values ahead of time. l.Add(0.11); l.Add(0.1); l.ToArray(); //ultimately we want an array of doubles Anything wrong with this approach? Is there a more appropriate way to build an array, without knowing the size, or elements ahead of time?

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• Loss of precision - int -> float or double

  - by stan

  I have an exam question i am revising for and the question is for 4 marks "In java we can assign a int to a double or a float". Will this ever loose infromation and why? I have put that because ints are normally of fixed length or size - the precision for sotring data is finite, where storing information in floating point can be infinite, essentially we loose infromation because of this Now i am a little sketchy as to whetehr or not i am hitting the right areas here. I very sure it will loose precision but i cant exactly put my finger on why. Can i getsome help please Thanks

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• ampersand in email address (href)

  - by d daly

  Hi Im working with email address which has an ampersand in it, the user wants a 'contact us' link to open up a new message wit their address populated, I normally use href, but the ampersand is causing this not to work, any idea's? here's what i have at the moment: <a href="mailto:L&[email protected]? subject=MessageTitle&amp;" style="font-family: Verdana; font-size: large; font-weight: bold; color: #800000">#GHA Organisation Development</a>

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• gnuplot - multiple lines with different x ranges

  - by Aly

  Hi, I am using gnuplot to try and plot several lines but each have different x ranges. I am running the following script: # gnuplot script for 'omarConf2EvONLY-vs-everyone-gta-lag-lpas-omarConf1-random-tag-tpas.dat' plot "omarConf2EvONLY-vs-everyone-gta-lag-lpas-omarConf1-random-tag-tpas.dat" using 1:2 with lines title '1' replot "omarConf2EvONLY-vs-everyone-gta-lag-lpas-omarConf1-random-tag-tpas.dat" using 1:3 with lines title '2' replot "omarConf2EvONLY-vs-everyone-gta-lag-lpas-omarConf1-random-tag-tpas.dat" using 1:4 with lines title '3' replot "omarConf2EvONLY-vs-everyone-gta-lag-lpas-omarConf1-random-tag-tpas.dat" using 1:5 with lines title '4' replot "omarConf2EvONLY-vs-everyone-gta-lag-lpas-omarConf1-random-tag-tpas.dat" using 1:6 with lines title '5' replot "omarConf2EvONLY-vs-everyone-gta-lag-lpas-omarConf1-random-tag-tpas.dat" using 1:7 with lines title '6' replot "omarConf2EvONLY-vs-everyone-gta-lag-lpas-omarConf1-random-tag-tpas.dat" using 1:8 with lines title '7' set terminal png size 800,600 set output "omar_vs_everyone-EVONLY.png" replot and the .dat file is just a file with columns such as: 1 0.5 0.5 0.1 2 0.6 1.3 0.8 3 0.7 0.32 4 0.7 0.35 5 1.3 4.32 6 1.67 notice that the columns have different lengths as each line has different x ranges. The problem I have is that it plots funny as shown below:

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• To "null" or not to "null" my class's attributes

  - by Helper Method

  When I write a class in Java, I like to initialize the attributes which are set to a default value directly and attributes which are set by the caller in the constructor, something like this: public class Stack<E> { private List<E> list; private size = 0; public Stack(int initialCapacity) { list = new ArrayList<E>(initialCapacity); } // remainder omitted } Now suppose I have a Tree class: public class Tree<E> { private Node<E> root = null; // no constructor needed, remainder omitted } Shall I set the root attribute to null, to mark that it is set to null by default, or omit the null value?

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• Why is my condition onsubmit not returning false?

  - by Liso22

  After asking a couple of questions I managed to create this form. I didn't have troubles making it return false if the submitted value was 0 but I cannot make it return false when it's the string 'Cambia de ciudad". I'm sure I'm messing with the quotes or something like that. This is the form: <form role="search" method="get" action="http://chusmix.com/" onsubmit="if (document.getElementById('s')== 'Cambiá de ciudad") return false;'> <input class="ubicacion" name="s" id="s" tabindex="1" onsubmit="if ((document.getElementById('s').value.length < 4) || (document.getElementById('s')== 'Cambiá de ciudad')) return false;" onfocus="if (this.value=='Cambiá de ciudad') this.value = ''" onblur="if(this.value == '') this.value = 'Cambiá de ciudad'" type="text" maxlength="80" size="28" value="Cambiá de ciudad"> <input type="submit" id="searchsubmit" value="Buscar" /> </form> How do I make it work? Thanks

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• How do you manage tasks within your work?

  - by Michael

  Just wondering how you all manage your workload effectively when there's a lot of your plate? What do you do to break it down into bite-size chunks and how do you track progress of each task? Do you find TDD helps to focus your attention of getting areas of functionality complete before moving onto the next one? I quite often find myself getting a bit overwhelmed when I have an involving task on the go (even if it can be broken down into lots of small chunks), even though I know I'm more than capable of doing the work. We have a kind of agile approach Interested to hear how everyone manages things effectively.

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• FtpWebResponse and StreamReader - specifying an offset

  - by AJ

  Hi, I am using the FtpWebRequest / FtpWebResponse objects in C# to download files from a server - so far, so good. I create a StreamReader object from the response stream and use a StreamWriter to create a local file. Now, the file I am reading happens to be in a very simple 'archive' format - there is a small TOC at the start of the file followed by the actual file data. I can therefore read the TOC and get a file offset and size of the data I want to download. My question is: Supposing the offset is 1024. I would use StreamReader.Read(buffer, 1024, length), but will .NET and the FTP protocol actually allow me to skip bytes 0-1023, or does the reader still go through the (relatively) slow process of downloading and discarding the bytes I don't need? This may make the difference between whether I want to use a single archive file, or a TOC file with the data files stored separately. As a bit of a secondary question, would my mileage vary using the Http classes instead of Ftp? Cheers, Adam

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• Why does strlen not working for me?

  - by tushar

  char p[4]={'h','g','y'}; cout<<strlen(p); This code prints 3. char p[3]={'h','g','y'}; cout<<strlen(p); This prints 8. char p[]={'h','g','y'}; cout<<strlen(p); This again prints 8. Please help me as I can't figure out why three different values are printed by changing the size of the array.

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• comparing multidimensional array

  - by John K

  Hello everyone, I have the following array: Array ( [0] => Array ( [0] => 87 [1] => 55 [2] => 85 [3] => 86 ) [1] => Array ( [0] => 58 [1] => 84 ) [2] => Array ( [0] => 58 ) ) This array above is an example. The actual array is of variable size, but structured like this. Basically, I'd like to run array_intersect on each second level array and grab the value (number) that is common between them. In this case, it would be 58. I'm not quite sure where to start on this. Any advice?

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• sql insert statement with a lot of same where clause and one different where cluase

  - by william

  I m sry if the title is not clear. Here's my proble. I created a new table which will show total, average and maximum values. I have to insert the results into that table. That table will have only 4 rows. No Appointment, Appointment Early, Appointment Late and Appointment Punctual. So.. I have sth like.. insert into newTable select 'No Appointment' as 'Col1', avg statement, total statement, max statement from orgTable where (general conditions) and (unique condition to check NO APPOINTMENT); I have to do that same thing for another 3 rows.. where only the unique condition is different to check early, punctual or late.. So..the statement is super long. I wanna reduce the size.. How can I achieve that?

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• Does MultiThreading in Java takes much time for task completion?

  - by Geeta

  I have to search for a string in 10 large size files (in zip format 70 MB) and have to print the lines with the search string to corresponding 10 output files.(i.e. file 1 output should be in output_file1...file2--- output_file2). The same program takes 15 mins for a single file. But if use 10 threads to read 10 files and to write in 10 different files it should complete in 15 mins but its taking 40 mins. How can I solve this. Or multithreading will take this much time only?

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• C++ template parameter/class ambiguity

  - by aaa

  hello. while testing with different version of g++, the following problem came up template<class bra> struct Transform<bra, void> : kernel::Eri::Transform::bra { static const size_t ni = bra::A::size; bra::A is interpreted as kernel::Eri::Transform::bra::A, rather than template argument by g++ 4.1.2. on the other hand, g++ 4.3 gets it right. what should be correct behavior according to standard? Meanwhile, I refactor slightly to make problem go away.

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• updating button text and other issues

  - by droidus

  I am trying to update my button. but the problem is that I can't have an ID/name with it, right, when doing this? so what if I have multiple forms on the page, and must identify the button? <input type="submit" value="Upload my File" style="background-color:#00F; font-size:14px; padding:1em;" onclick=" this.value='Please wait...'; this.disabled = true; var theForm = this.form; window.setTimeout(function(){theForm.submit();},3);" /> also, the button doesn't seem to wait 3 seconds when I hit the submit button.

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• Layout Problem on Bigger resolution Phone like Nexus one?

  - by UMMA

  dear friends, i have created application using layout font sizes in "pixels" font and other layout looks fine on HTC hero and Motorola Droid but in nexus one which is bigger resolution phone every thing is messed up. for example , i have used font 18px which is bigger size in HTC Hero and Motorola but in Nexus one it is looking very small. same is the case with image height and width a banner looks fine on both phones but in nexus one very small. actually we dont have height and width in percentage thats why i am not able to solve this problem. layout_width="fill_parent" also not helping.. kindly help me out what should i do to make application look same in all the phones with different resolutions.

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• Check if the Form was Shown

  - by serhio

  .NET2 I have a panelChild that is on the panelParent that is in the Form1. When panelParent_Resizes panelChild does a panelChild_HeavyOperation. panelParent rezizes multiple times in InitializeComponent of Form1 and consume a lot of time because of panelChild_HeavyOperation. I decided to reduce the panelChild_HeavyOperation only when the Form1 is shown and has a defined size. by eg. like this: Sub panelChild_HeavyOperation If not FindForm().IsShown then Reuturn ' .... ' End Sub The problem is that IsShown does not exist on a Form...

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• Unable to sign an imported msi.dll assembly using tlbimp

  - by BigMoose

  This seems so trivial, yet I can't get it to work.. I have an msi.dll wrapper (named Interop.WindowsInstaller.dll) which I need to sign. The way to do it is by signing it upon import (this specific case is even documented in MSDN: http://msdn.microsoft.com/en-us/library/zec56a0w.aspx). BUT - no matter how I do it (w/ or w/o a keyfile, w/ or w/o adding "/delaysign"), the generated assemly's size is always 36,864 bytes and when viewing the DLL's properties there is no "Digital Signatures" tab (needless to say - the DLL is NOT signed). What am I missing here?? (... HELP!...)

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• Handling errors on php contact form

  - by topSearchDesign

  The below code is working great for handling errors for text fields in my contact form, but how do I get this same method to work for dropdown select option boxes and textareas? <input type="text" name="name" value="<?php if($errors){echo $name;} ?>" id="name" size="30" /> For example: <textarea name="message" value="<?php if($errors){echo $message;} ?>" id="message" rows="10" cols="40"></textarea> does not work.

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• Why am I getting a segmentation fault with this code?

  - by gooswa

  Trying to make a simple rectangle/bin packer in C. Takes a given area and finds placement for any given size rectangle. About after 4 recursions is when I get the segmentation fault. #include <stdio.h> #include <stdlib.h> typedef struct node_type PackNode; struct node_type { int x , y; int width , height; int used; struct node_type *left; struct node_type *right; }; typedef struct point_type PackPoint; struct point_type { int x,y; }; PackNode _clone(PackNode *node) { PackNode clone; clone.used = 0; clone.x = node->x; clone.y = node->y; clone.width = node->width; clone.height= node->height; clone.left = NULL; clone.right= NULL; return clone; } PackNode root; int rcount; PackPoint* recursiveFind(PackNode *node, int w, int h) { PackPoint rp; PackPoint *p = NULL; rcount++; printf ("rcount = %u\n", rcount); //left is not null go to left, if left didn't work try right. if (node->left!=NULL) { //move down to left branch p = recursiveFind(node->left, w, h); if (p!=NULL) { return p; } else { p = recursiveFind(node->right, w, h); return p; } } else { //If used just return null and possible go to the right branch; if (node->used==1 || w > node->width || h > node->height) { return p; } //if current node is exact size and hasn't been used it return the x,y of the mid-point of the rectangle if (w==node->width && h == node->height) { node->used=1; rp.x = node->x+(w/2); rp.y = node->y+(h/2); p = &rp; return p; } //If rectangle wasn't exact fit, create branches from cloning it's parent. PackNode l_clone = _clone(node); PackNode r_clone = _clone(node); node->left = &l_clone; node->right = &r_clone; //adjust branches accordingly, split up the current unused areas if ( (node->width - w) > (node->height - h) ) { node->left->width = w; node->right->x = node->x + w; node->right->width = node->width - w; } else { node->left->height = h; node->right->y = node->y + h; node->right->height = node->height - h; } p = recursiveFind(node->left, w, h); return p; } return p; } int main(void) { root = malloc( root.x=0; root.y=0; root.used=0; root.width=1000; root.height=1000; root.left=NULL; root.right=NULL; int i; PackPoint *pnt; int rw; int rh; for (i=0;i<10;i++) { rw = random()%20+1; rh = random()%20+1; pnt = recursiveFind(&root, rw, rh); printf("pnt.x,y: %d,%d\n",pnt->x,pnt->y); } return 0; }

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• C# : Redirect console application output : How to flush the output?

  - by user93422

  I am spawning external console application and use async output redirect. as shown in this SO post My problem is it seems that the spawned process needs to produce certain amount of output before I get the OutputDataReceived event notification. I want to receive the OutputDataReceived event as soon as possible. I have a bare-bones redirecting application, and here are some observations: 1. When I call a simple 'while(true) print("X");' console application (C#) I receive output event immediately. 2. When I call a 3d party app I am trying to wrap from the command line I see the line-by-line output. 3. When I call that 3d party app from my bare-bone wrapper (see 1) - the output comes in chunks (about one page size). What happens inside that app? FYI: The app in question is a "USBee DX Data Exctarctor (Async bus) v1.0".

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• Upload image with Tumblr API in PHP

  - by John

  I'm having trouble uploading a photo from my computer to tumblr using their API. http://www.tumblr.com/docs/en/api photo - Requires either source or data, but not both. If both are specified, source is used. * source - The URL of the photo to copy. This must be a web-accessible URL, not a local file or intranet location. * data - An image file. See File uploads below. * caption (optional, HTML allowed) * click-through-url (optional) I need to use data File uploads can be done in a data parameter where specified above. You may use either of the common encoding methods: multipart/form-data method, like a file upload box in a web form. Maximum size: o 50 MB for videos o 10 MB for photos o 10 MB for audio I would post my code but it's not showing up correctly for me.

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• Is it a good practice to pass struct object as parameter to a function in c++?

  - by tsubasa

  I tried an example live below: typedef struct point { int x; int y; } point; void cp(point p) { cout<<p.x<<endl; cout<<p.y<<endl; } int main() { point p1; p1.x=1; p1.y=2; cp(p1); } The result thats printed out is: 1 2 which is what I expected. My question is: Does parameter p get the full copy of object p1? If so, I wonder if this is a good practice? (I assumed when the struct gets big in size, this will create a lot of copy overhead).

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