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Articles indexed Sunday March 21 2010

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  • Cakephp, Retreive Data for HABTM Models using conditional find

    - by ion
    There are 2 Models: Project & Category that are bind with HABTM relationship. I would like to perform a search from projects controller that can do the following: FIND all DISTINCT Project.scedule WHERE Category.slug != 'uncategorised' Apologies for the syntax, I'm no sequel expert. What I have managed to do is to retrieve all projects that do not belong to Category uncategorised into an array however I'm not sure as to how to search again the array result for DISTINCT Project.schedule values (needed to fill out a form drop down) I hope I made myself clear.

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  • What exactly are tuples in Python?

    - by Sergio Tapia
    I'm following a couple of Pythone exercises and I'm stumped at this one. # C. sort_last # Given a list of non-empty tuples, return a list sorted in increasing # order by the last element in each tuple. # e.g. [(1, 7), (1, 3), (3, 4, 5), (2, 2)] yields # [(2, 2), (1, 3), (3, 4, 5), (1, 7)] # Hint: use a custom key= function to extract the last element form each tuple. def sort_last(tuples): # +++your code here+++ return What is a Tuple? Do they mean a List of Lists?

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  • A PHP regex to extract php functions from code files

    - by user298593
    I'm trying to make a PHP regex to extract functions from php source code. Until now i used a recursive regex to extract everything between {} but then it also matches stuff like if statements. When i use something like: preg_match_all("/(function .(.))({([^{}]+|(?R))*})/",$this-data,$matches2); It doesn't work when there is more than 1 function in the file (probably because it uses the 'function' part in the recursiveness too). Is there any way to do this? Example file: <?php if($useless) { echo "i don't want this"; } function bla($wut) { echo "i do want this"; } ?> Thanks

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  • Set binding for DataTemplate components in code

    - by Chouppy
    Hi; sorry if I'm not clear, it's not really clear in my head too (especially after trying to find my way in other posts :p) What I'm willing to do is creating DataGrids in code, with zero to numerous columns containing a button, which will call one same function but with a "parameter" (different for each column). Here is what I got so far : DataGrid created in code DataTemplate defined in the xaml resources (with a button) DataGridTemplateColumn which uses the above DataTemplate Is it possible to bind the button's properties (in the DataTemplate), to the DataGridTemplateColumn properties (in my case, the column header would be ok), and how? Is there a way to get an access to the DataTemplate components (the button for example) in code, and modify their properties? Is it possible (and not hazardous) to create a DataTemplate in code? I declared mine in xaml because I found a post advising to do so instead of code. Thanks for your help.

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  • Official names for pointer operators

    - by FredOverflow
    What are the official names for the operators * and & in the context of pointers? They seem to be frequently called dereference operator and address-of operator respectively, but unfortunately, the section on unary operators in the standard does not name them. I really don't want to name & address-of anymore, because & returns a pointer, not an address. (A pointer is a language mechanism, while an address is an implementation detail. Addresses are untyped, while pointers aren't, except for void*.) The standard is very clear about this: The result of the unary & operator is a pointer to its operand. Symmetry suggests to name & reference operator which is a little unfortunate because of the collision with references in C++. The fact that & returns a pointer suggests pointer operator. Are there any official sources that would confirm these (or other) namings?

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  • How do debug header file implemetation (its .cpp) in c++ using GDB

    - by zengr
    Hi, I have these 3 file in my program: sample1.h (method in sample1.cpp are defined here) sample1.cpp (all the actual implementations) demo.cpp (I am using the methods in sampe1.cpp here, and have included sample1.h) Now, I am using GDB to debug and I know the basic commands like "break lineno." or "break methodname". But, how do I debug the methods written in sample1.cpp? I tried: break "sample1.cpp:mymethod" but it did not work. Thanks

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  • IPhone image gallery effect in silverlight

    - by Sergej Andrejev
    I'm creating Windows 7 Mobile application in silverlight. I want to do something similar like image gallery in iphone where you would list images by dragging your finger from left to right. Where should I start looking for this effect and maybe you know of any implementation I could learn from?

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  • Get from Android BroadcastReciever to a UI

    - by Andy
    I have a reciever that works well, but I can't seem to show a proper UI, although the toast appears correctly. As far as I can tell, this is caused by Android requiring the class to extend Activity, however, the class already extends BroadcastReciever, so I can't do this. So, I tried to do an Intent, but this failed too. There are no errors, but the screen doesn't show. Source code is below, and any help would be most appreciated. Reciever public class Reciever extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Toast.makeText(context, "Alarm Recieved", Toast.LENGTH_LONG).show(); Intent i = new Intent(); i.setClass(context, AlarmRing.class); } } AlarmRing public class AlarmRing extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.alarm); MediaPlayer mp = MediaPlayer.create(getBaseContext(), R.raw.sweetchild); mp.start(); } Manifest <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.comaad.andyroidalarm" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".AndyRoidAlarm" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <receiver android:name="com.comaad.andyroidalarm.Reciever" android:enabled="true"> <intent-filter> <action android:name="com.comaad.andyroidalarm.Reciever"></action> </intent-filter> </receiver> <activity android:name=".AlarmRing"></activity> </application> </manifest> }

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  • MySQL Search (Sort by Relevance)

    - by atif089
    Hi guys, Can any one help me how to sort rows by relevance for the following criterion ? tbluser First Name Last Name tbleduc School College University On the search form the user has following fields Name School College University Where School College and University are Optional.. And Name is split into 2 words (other words in middle are omitted), first word is taken as first anme and last word as last name.. Now I would like to implement search based on relevance. Thanks for the help :)

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  • CSMA between APs in same channel & different SSID ?

    - by Ranganathan
    Would be great if someone clarifies this doubt. Lets assume two Wireless Access Points AP1 & AP2 with these conditions 1. both in the same 802.11 standard 2. same channel 3. using different SSIDs (just like in adjacent apartment houses). In this case, do these two Access points (and the clients associated to them) coordinate via CSMA/CA ? ie., if one of the AP's or a client station is about to transmit, does it wait & observe the other AP's & its clients' transmission before sending the frame in air ? Also, do the clients associated with these different APs coordinate via CSMA/CA ?

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  • Australian Wifi Hotspot Providers

    - by Dan
    More informational than techy, but are there any Australians (or frequent visitors to Australia) who can tell me who the big players are in providing Wifi hotspots over there? A colleague is going there for a few weeks and will need to connect back remotely, so I wanted to be able to steer him towards some of the bigger names. Thanks,

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  • Legality of ripping DVD audio

    - by Smashery
    I want to buy several live music DVDs, but I also want to be able to put the music in my playlists. It seems ridiculous that I should also have to buy the Live CD version. Is it legal (particularly under Australian law) to rip the audio?

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  • Best way to rip DVD movies to ISO files

    - by alex
    I'm trying to backup my DVD collection. I have Handbrake, and will eventually experiment with the best settings to use. For now, I'd like to backup the DVD's to ISO files, that i can mount and then use Handbrake on later, or burn back on to DVD should the original get damaged. I have a WD TV box that is capable of playing ISO files also. What's the best program for doing this? I'm not so much concerned with file size.

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  • High quality / high speed dvd reader for Mac Pro

    - by deadprogrammer
    I have a high end Mac pro, but one thing in is that I'm unhappy with is a DVD drive. It's a Hitachi GH41N. Apple calls it a "superdrive", but it's anything but. The damn thing makes an amazing amount of noise, and isn't too fast either. What I want is a state of the art, fast, quiet DVD reader, preferably not even a burner. What should I get?

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  • Add subtitles to Ogg Video

    - by Jaxau
    I've started to convert my DVD collection to Ogg Video (OGV) and it works so far quite good. However, I heard that I can embed the subtitles inside the OGV-file as well. How can I do this on Linux? On Windows there are several applications but on Linux not so much. Any examples would be appreciated. Edit: I have the original VOB of course. PS. No, I don't give out my movies. Don't even ask. I paid for them, not you. :)

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  • Rip DVD on Linux

    - by becomingGuru
    I want to rip a DVD and store it in a good and compressed format. What software to use for that and what is the best format; I want best quality and low file size. +1 if I don't have to install any new software (at least those not in the repos) +1 if it can be done on command line

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  • Extracting DVDs

    - by Arvind Kohli
    I have some Movie DVDs, there are 3-4 movies in a DVD and I want to extract some particular movies from the DVDs to save them on another CD. Please let me know how can I do that. I am using windows xp

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  • Multi-core DVD ripping/encoding on the Mac

    - by Paul D. Waite
    A friend of mine likes ripping DVDs to his Mac. He’s currently on an ancient machine, and is about to upgrade to either a MacBook Pro or an iMac. Just wondering if any of the Mac DVD ripping software will rip faster on the iMac (thanks to its four cores), as opposed to the MacBook Pro (a measly two cores)? Or is DVD ripping not that sort of task?

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  • Split MPEG video from command line?

    - by Tim
    I have a homemade DVD that I'm effectively trying to insert chapters into and rearrange - the original author burned it as one long chapter, and I'd like to rip it into smaller pieces and re-encode it into a new DVD. I ripped the DVD with the following command: mplayer dvd:// -dvd-device /dev/sr2 -dumpstream -dumpfile raw.vob I'm running Gentoo Linux with mplayer version 1.0-rc2_p20090731 (the latest available in Portage). I have a list of times that the chapters are supposed to span (for example 30:11-33:25), so my first thought was to rip the entire DVD and use mpgtx to cut out certain pieces of the file. My issue is that running mpgtx -i on the file reports quite a few timestamp jumps: Time stamps jumped from 59.753789 to 0.001622 at position 1d29800 Time stamps jumped from 204963823030450.343750 to 31.165900 at position 2d4f800 Time stamps jumped from 60.077878 to 0.001622 at position 43cc000 Time stamps jumped from 60.024233 to 0.001622 at position 65c5000 Time stamps jumped from 204963823068631.718750 to 52.549244 at position 7fd1000 I've tried to fix the indexes using: mencoder raw.vob -oac copy -ovc copy -forceidx -o fixed.vob -of mpeg But mpgtx will still report timestamp issues. My immediate question: is there a way to take the ripped movie I have and correct its timestamps so I can cut it with mpgtx? If I can get that one issue out of the way, building the rest of the DVD will be smooth sailing. If it's not possible to fix the timestamps on this file: is there a better way to rip small chunks of the DVD into separate files for recompilation later? I'd very much like this to be done on Linux, and it'd be even better if I could script it somehow (feed in a list of start and end positions, or start times and durations, and get out a series of ripped files). If need be, I also have a Mac OS X machine available, but no Windows. Edit: I wound up finding another solution involving HandBrake and ffmpeg (with help from this question), but the question stands. Edit again: Turns out my other solution didn't quite work - the audio desynchronized by about five seconds, in about half of my cut mpgs - so I'm back to square one. Anyone?

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  • What is the use of reflection in Java/C# etc

    - by zengr
    I was just curious, why should we use reflection in the first place? // Without reflection Foo foo = new Foo(); foo.hello(); // With reflection Class cls = Class.forName("Foo"); Object foo = cls.newInstance(); Method method = cls.getMethod("hello", null); method.invoke(foo, null); We can simply create an object and call the class's method, but why do the same using forName, newInstance and getMthod functions? To make everything dynamic?

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  • strcat implementation

    - by skydoor
    I tried to implement the strcat by myself, and I found the strcat implementation from Wiki like this......but when I use it, there is segmentation fault. What's from with the code below? char * strcat(char *dest, const char *src) { size_t i,j; for (i = 0; dest[i] != '\0'; i++) ; for (j = 0; src[j] != '\0'; j++) dest[i+j] = src[j]; dest[i+j] = '\0'; return dest; }

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  • A queue in C using structs and dynamic memory allocation (linked list)

    - by Martin Pugh
    I am tasked with making a queue data structure in C, as a linked list. Our lecturer gave us a large amount of code to implement a stack, but we have to adapt it to create a queue. The code our lecturer gave us ends up not compiling and segfaulting at the exact same point as the code I wrote for the queue. I'm very new to structs, malloc and C in general, so there could be something painfully obvious I've overlooked. Here is the code I am using: #include <stdio.h> #include <stdlib.h> struct node{ int data; //contains the actual data struct node *prev; //pointer to previous node (Closer to front) struct node *next; //pointer to next node (Closer to back) }; typedef struct node *Nodepointer; struct queue{ Nodepointer front; Nodepointer back; }; typedef struct queue *Queuepointer; main(){ Queuepointer myqueue; //create a queue called myqueue init(myqueue); //initialise the queue Nodepointer new = (Nodepointer)malloc(sizeof(struct node)); myqueue->front = new; } int init(Queuepointer q){ q = (Queuepointer)malloc(sizeof(struct queue)); q->front = NULL; q->back = NULL; } The idea is that the queue struct 'contains' the first and last nodes in a queue, and when a node is created, myqueue is updated. However, I cannot even get to that part (pop and push are written but omitted for brevity). The code is segfaulting at the line myqueue->front = new; with the following gdb output: Program received signal SIGSEGV, Segmentation fault. 0x08048401 in main () at queue.c:27 27 myqueue->front = new; Any idea what I'm doing wrong?

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  • Logback to log different messages to two files

    - by Aly
    I am using logback/slf4j to do my logging. I want to parse my log file to analyze some data, so instead of parsing a great big file (mostly consisting of debug statements) I want to have two logger instances which each log to a separate file; one for analytics and one for all purpose logging. Does anyone know if this is possible with Logback, or any other logger for that matter?

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