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  • Display problem after deletion in linked list in C

    - by LuckySlevin
    Hi, actually this was another problem but it changed so I decided to open a new question. My code is typedef struct inner_list { int count; char word[100]; inner_list*next; } inner_list; typedef struct outer_list { char word [100]; inner_list * head; int count; outer_list * next; } outer_list; void delnode(outer_list **head,char num[100])//thanks to both Nir Levy and Jeremy P. { outer_list *temp, *m; m=temp=*head; /*FIX #1*/ while(temp!=NULL) { if(strcmp(temp->word,num)==0) { if(temp==*head) { delinner(temp->head); /* FIX#2 */ *head=temp->next; free(temp); return; } else { delinner(temp->head); /* FIX#2 */ m->next=temp->next; free(temp); return; } } else { m=temp; temp= temp->next; } } printf(" ELEMENT %s NOT FOUND ", num); } void delinner(inner_list *head) { /* FIX#2 */ inner_list *temp; temp=head; while(temp!=NULL) { head=temp->next; free(temp); temp=head; } } void delnode2(outer_list *up,inner_list **head,char num[100]) { inner_list *temp2,*temp, *m; outer_list *p; p = up; while(p!=NULL){m=temp=temp2=p->head; while(temp!=NULL) { if(strcmp(temp->word,num)==0) { if(temp==(*head)) { *head=temp->next; free(temp); return; } else { m->next=temp->next; free(temp); return; } } else { m=temp; temp= temp->next; } } p=p->next; } printf(" ELEMENT %s NOT FOUND ", num); } void print_node(outer_list *parent_node) { while(parent_node!=NULL){ printf("%s\t%d\t", parent_node->word, parent_node->count); inner_list *child_node = parent_node->head; printf("list: "); if(child_node ==NULL){printf("BUARADA");} while (child_node != NULL) { printf("%s-%d", child_node->word,child_node->count); child_node = child_node->next; if (child_node != NULL) { printf("->"); } } printf("\n"); parent_node = parent_node->next; } } While deleting an element from outer list I am also trying the delete the same element from inner_list too. For example: - Let's say aaa is an element of outer_list linked list and let's point it with outer_list *p - This aaa can also be in an inner_list linked list too. (it can be in p-head or another innerlist.) Now, the tricky part again. I tried to apply the same rules with outer_list deletion but whenever i delete the head element of inner_list it gives an error. Where is the wrong thing in print_node or delnode2?

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  • what do i need to do now that I want to take programming hobby to next level ?

    - by hohog
    i've always wanted to make games but did not start actively learning programming by myself until 1st year of university. i kept going throughout university learning new languages, showing off things i had made, while neglecting my major in Biology. Anyways, i've ended up with an Economics degree, with a portfolio of SaaS and web apps i had created so i could eat during my final year. So far, I'm getting a few interviews here and there in web programming positions. When I get a logic pretest, I fail miserably. or job requires comp sci degree. I mean I can easily design and code an entire app which I emphasize through my portfolio.... but i dont know why I am so slow at logic puzzles on prescreening interview... So what should I do now ? get certificates in languages ? go back to school and learn CS ? is it too late to get into windows programming jobs than web programming ?

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  • How to change a class's content using jQuery

    - by coffeeaddict
    Here is the div element on my page: How can I change a class's content? So from existing which is: class="jcarousel-next jcarousel-next-horizontal" to class="jcarousel-next jcarousel-next-horizontal jcarousel-next- disabled jcarousel-next-disabled-horizontal" Do I need to completely remove it by using removeClass and then re-add?

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  • After getting the 'It worked!' page with Djangoappengine, what do I do next?

    - by Jacques Bosch
    I followed the Djangoappengine instructions. I used their django-testapp and copied the following folders in the django-testapp folder according to what I understood the instructions to say: django djangoappengine djangotoolbox I then started the dev server by running: manage.py runserver Then navigated to http://localhost:8000/ and got the "It worked!" page, which is great, but it says the following at the bottom: You're seeing this message because you have DEBUG = True in your Django settings file and you haven't configured any URLs. Get to work! I am an absolute beginner with Django and App Engine and Djangoappengine and Django-nonrel, so I am pretty lost. How do I configure URLs? Or a link to the how to will help. I took a look at the Django tutorial, but am unsure how much of it is relevant to Djangoappengine and Django-nonrel as a lot of the starting steps have to do with SQL databases. Basically some direction on how to get my app running will be great. Thanx much.

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  • How should I migrate DDL changes from one environment to the next?

    - by Rl
    I make DDL changes using SQL Developer's GUI. Problem is, I need to apply those same changes to the test environment. I'm wondering how others handle this issue. Currently I'm having to manually write ALTER statements to bring the test environment into alignment with the development environment, but this is prone to error (doing the same thing twice). In cases where there's no important data in the test environment I usually just blow everything away, export the DDL scripts from dev and run them from scratch in test. I know there are triggers that can store each DDL change, but this is a heavily shared environment and I would like to avoid that if possible. Maybe I should just write the DDL stuff manually rather than using the GUI?

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  • Waiting until one event has happened before moving onto the next.

    - by jaasum
    I currently have a scrolling anchor animation that also adds an "active" class to the anchor clicked. I am trying to fit the below function into the works as well, so say someone clicks "anchor 1", "anchor 1" will get an active class and the window will scroll to that location. But, after that has happened say the user manually begins scrolling down the page, I want the active class to be removed. The problem I am running up against now is that the below function will happen when the scrolling animation from a clicked anchor is taking place. How can I disable this only when the window is being scrolled from a clicked anchor? $(window).scroll(function() { $('a[href^=#]').removeClass('active'); }); Here is the scrolling anchor script I am working with. /******* *** Anchor Slider by Cedric Dugas *** *** Http://www.position-absolute.com *** Never have an anchor jumping your content, slide it. Don't forget to put an id to your anchor ! You can use and modify this script for any project you want, but please leave this comment as credit. *****/ jQuery.fn.anchorAnimate = function(settings) { settings = jQuery.extend({ speed : 500 }, settings); return this.each(function(){ var caller = this $(caller).click(function (event) { event.preventDefault() var locationHref = window.location.href var elementClick = $(caller).attr("href") var destination = $(elementClick).offset().top; $("html:not(:animated),body:not(:animated)").animate({ scrollTop: destination}, settings.speed, 'easeOutCubic', function() { window.location.hash = elementClick }); return false; }) }) } And lastly, my jQuery // Scrolling Anchors $('[href^=#]').anchorAnimate(); // Active Class For Clicked Anchors var anchorscroll = $('a[href^=#]') anchorscroll.click(function(){ var anchorlocation = $(this).attr("href"); anchorscroll.removeClass('active'); $(this).addClass('active'); $('a[href='+anchorlocation+']').addClass('active'); });

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  • How can I tell when the Text of a System.Windows.Forms.GroupBox wraps to the next line?

    - by fre0n
    I'm creating a GroupBox at runtime and setting its Text property. Usually, the text is only on one line, but sometimes it wraps. The problem is that the controls contained in the GroupBox cover up the GroupBox's text. What I'd like to do is determine if and when the text wraps. Specifically, I'd like to determine how much extra height the wrapped text takes up as compared to a single line. That way, I can reposition the GroupBox's controls and adjust its height. Initially, I thought I'd do this by calling the GroupBox's CreateGraphics() method, and using the Graphics to measure the string. Something like this: private void SetGroupBoxText(GroupBox grp, string text) { const int somePadding = 10; Graphics g = grp.CreateGraphics(); SizeF textSize = g.MeasureString(text, grp.Font); if (textSize.Width > (grp.Width - somePadding)) { // Adjust height, etc. } } The problem is that the size generated by g.MeasureString(text, grp.Font) doesn't seem to be accurate. I determined that it wasn't accurate by putting enough of a single character to cause a wrap, then measuring the resulting string. For example, it took 86 pipes (|) to until a wrap happened. When I measured that string, its width was ~253. And it took 16 capital W's to force a wrap - its string had a width of ~164. These were the two extremes that I tested. My GroupBox's width was 189. (a's took 29 and had a width of ~180, O's took 22 and had a width of ~189) Does anyone have any ideas? (hacks, WinAPI, etc. are welcome solutions)

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  • 4GB limitation on these embedded/express DBs good enough? what's next if limitation is reached?

    - by edwin.nathaniel
    I'm wondering how long a (theoretically) desktop-app can consume the full 4GB limitation of these express/embedded database products (SQL-Server Express, Oracle Express, SQLite3, etc) provided that big blobs will be stored in filesystem. Also what would be your strategy when it hits the 4GB? Archive the old DB Copy 1-3 months of data to the new DB (consider this as cache strategy?) Start using the new DB from this point onward (How do you access the old data?) I understand that the answer might varies depending on how much data you stored in the table/column. But please describe based on your experience (what kind of desktop-app, write/read heavy, how long will it reach according to your guess).

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  • How do I find the next multiple of 10 of any integer?

    - by Tommy
    Dynamic integer will be any number from 0 to 150. i.e. - number returns 41, need to return 50. If number is 10 need to return 10. Number is 1 need to return 10. Was thinking I could use the ceiling function if I modify the integer as a decimal...? then use ceiling function, and put back to decimal? Only thing is would also have to know if the number is 1, 2 or 3 digits (i.e. - 7 vs 94 vs 136) Is there a better way to achieve this? Thank You,

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  • what is the probability that the next random number will equal current one?

    - by I__
    if i do this in a worksheet: =RAND() i also specified that i want only 2 decimal places and for example let's say that rand() = 0.07 what is the probability that when i call this function again i will get 0.07 ?? i know that ideally if we assume 100% randomness, the answer would be 1/ (10 * 10) because there are only 100 possible combinations, but what would it be according to the way excel generates a random number?

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  • Wait for inline thread to complete before moving to next method...

    - by Tyler
    Hello, I have an android app where I am doing the following: private void onCreate() { final ProgressDialog dialog = ProgressDialog.show(this, "Please wait..", "Doing stuff..", true); new Thread() { public void run() { //do some serious stuff... dialog.dismiss(); } }.start(); stepTwo(); } And I would like to ensure that my thread is complete before stepTwo(); is called. How can I do this? Thanks!

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  • PHP Session doesn't get read in next page after login validation, Why?

    - by NetStar
    I have a web site and when my users login it takes them to verify.php (where it connects to the DataBase and matches email and password to the user input and if OK puts client data into sessions and take the client to /memberarea/index.php ELSE back to login page with message "Invalid Email or password!") <?php ob_start(); session_start(); $email=$_POST['email']; $pass=md5($_POST['pass']); include("conn.php"); // connects to Database $sql="SELECT * FROM `user` WHERE email='$email' AND pass='$pass'"; $result=mysql_query($sql); $new=mysql_fetch_array($result); $_SESSION['fname']=$new['fname']; $_SESSION['lname']=$new['lname']; $_SESSION['email1']=$new['email1']; $_SESSION['passwrd']=$new['passwrd']; $no=mysql_num_rows($result); if ($no==1){ header('Location:memberarea/index.php'); }else { header("Location:login.php?m=$msg"); //msg="Invalid Login" } ?> then after email id and password is verified it takes them to ` /memberarea/index.php (This is where the problem happens.) where in index.php it checks if a session has been created in-order to block hackers to enter member area and sends them back to the login page. <? session_start(); isset($_SESSION['email'])` && `isset($_SESSION['passwrd'])` The problem is the client gets verified in verify.php (the code is above) In varify.php only after I put ob_start(); ontop of session_start(); It moves on to /memberarea/index.php , If I remove ob_start() It keeps the client on the verify.php page and displays error header is alredy SENT. after I put ob_start() it goes in to /memberarea/index.php but the session is blank, so it goes back to the login page and displays the error ($msg) "Invalid Login" which I programed to display. Can anyone tell me why the session cant pass values from verify.php to /memberarea/index.php

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  • How to make the first invocation of a macro different from all the next ones ?

    - by LB
    Hi, that may be really simple but i'm unable to find a good answer. How can I make a macro representing first a certain value and then a different one ? I know that's nasty but i need it to implicitly declare a variable the first time and then do nothing. This variable is required by other macros that i'm implementing. Should i leverage "argument prescan" ? thanks for the answers. EDIT To make things clearer. Suppose i have a macro FOO, and I do something like FOO FOO FOO I would like the result to be foo bar bar I don't want the actual code to be cluttered by ifndef. The programmer should only have to write macro invocations.

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  • I got the address of a large managed object in WinDbg, what next?

    - by Mahen
    I created a high memory utilization dump and using !dumpheap -stat and !dumpheap -mt I got the address of two large string generic list of 30 MB each. I want to know more about these lists. What they contain or which piece of code is using them. Is there a way to find them out? 0:000 !do 2b370038 Name: System.Object[] MethodTable: 71e240bc EEClass: 71c0da54 Size: 33554448(0x2000010) bytes Array: Rank 1, Number of elements 8388608, Type CLASS Element Type: System.Collections.Generic.List`1[[System.String, mscorlib]] Fields: None

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  • How to focus next field if user clicked on the link?

    - by LA_
    I have a number of fields with labels-links like below: <div class="control-group"> <label class="control-label" for="some-id-1"><a href="http://example.com/some-id-1" target="_blank">Text1</a></label> <div class="controls"> <input type="text" id="some-id-1" name="some-id-1"><br> </div> </div> <div class="control-group"> <label class="control-label" for="some-id-2"><a href="http://example.com/some-id-2" target="_blank">Text2</a></label> <div class="controls"> <input type="text" id="some-id-2" name="some-id-2"><br> </div> </div> If user clicks on the link, how can I focus according field (without preventing default action)? I.e. if user clicks on Text1, then I should open http://example.com/some-id-1 in new window and set focus at input with id some-id-1.

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  • Without LIB And String file how can i write this code??

    - by muhammadlodhi
    #include<stdio.h> #include<conio.h> #include<stdlib.h> #include<string.h> struct Node; typedef struct Node * PtrToNode; struct Node { char element; PtrToNode Next; }; PtrToNode MakeEmpty(PtrToNode L) { L= new(Node); L->Next=NULL; return L; } void Push(PtrToNode L,char x) { PtrToNode S; S= new(Node); S->element=x; S->Next=L->Next; L->Next=S; } char Pop(PtrToNode L) { PtrToNode P; P=L->Next; char x=P->element; L->Next=P->Next; free(P); return x; } int main() { PtrToNode L; L= MakeEmpty(NULL); char Input[1000]; int i; printf("please enter your equation:"); scanf("%s",Input); for (i = 0;i<strlen(Input);i++) { if (Input[i]=='(') { Push(L,Input[i]); } if (Input[i]==')') { if (L->Next==NULL) { printf("incorrect"); return 0; } else Pop(L); } } if (L->Next==NULL) printf("correct"); else printf("incorrect"); getch(); return 0; }

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  • How to find next (by a single parameter) element in c++? (stl) [closed]

    - by user2136963
    I have n humans of THuman class Each human has scored some points in one of two rounds. (score1 and score2) Each human has its unique id. Score1 and 2 are also unique. Besides, a human has a score_t=score1+score2, which can be the same for two of them. I need to implement 6 variables to THuman which return id of a human with: bigger score1 smaller score1 bigger score2 smaller score2 bigger score_t smaller score_t (if there are many humans those satisfy theese conditions, the one with smallest difference of corresponding parameter should be chosen (like score1 for 1 and 2)) In other words, it's some kind of storing 3 human sortings. Two more functions I need should get argument x, set score1 or score 2 to x, and then refresh some of the 6 variables above. If I needed sorting by only one variable, I would simply create set and defined and < operators for my class. But what is the solution for three of parameters? Is it possible to use STL here, or I should create my own lists/treaps? __ Answer: How to update set of pointers c++?

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  • SQL Server 2008 R2 Reporting Services - The Word is But a Stage (T-SQL Tuesday #006)

    - by smisner
    Host Michael Coles (blog|twitter) has selected LOB data as the topic for this month's T-SQL Tuesday, so I'll take this opportunity to post an overview of reporting with spatial data types. As part of my work with SQL Server 2008 R2 Reporting Services, I've been exploring the use of spatial data types in the new map data region. You can create a map using any of the following data sources: Map Gallery - a set of Shapefiles for the United States only that ships with Reporting Services ESRI Shapefile - a .shp file conforming to the Environmental Systems Research Institute, Inc. (ESRI) shapefile spatial data format SQL Server spatial data - a query that includes SQLGeography or SQLGeometry data types Rob Farley (blog|twitter) points out today in his T-SQL Tuesday post that using the SQL geography field is a preferable alternative to ESRI shapefiles for storing spatial data in SQL Server. So how do you get spatial data? If you don't already have a GIS application in-house, you can find a variety of sources. Here are a few to get you started: US Census Bureau Website, http://www.census.gov/geo/www/tiger/ Global Administrative Areas Spatial Database, http://biogeo.berkeley.edu/gadm/ Digital Chart of the World Data Server, http://www.maproom.psu.edu/dcw/ In a recent post by Pinal Dave (blog|twitter), you can find a link to free shapefiles for download and a tutorial for using Shape2SQL, a free tool to convert shapefiles into SQL Server data. In my post today, I'll show you how to use combine spatial data that describes boundaries with spatial data in AdventureWorks2008R2 that identifies stores locations to embed a map in a report. Preparing the spatial data First, I downloaded Shapefile data for the administrative boundaries in France and unzipped the data to a local folder. Then I used Shape2SQL to upload the data into a SQL Server database called Spatial. I'm not sure of the reason why, but I had to uncheck the option to create a spatial index to upload the data. Otherwise, the upload appeared to run successfully, but no table appeared in my database. The zip file that I downloaded contained three files, but I didn't know what was in them until I used Shape2SQL to upload the data into tables. Then I found that FRA_adm0 contains spatial data for the country of France, FRA_adm1 contains spatial data for each region, and FRA_adm2 contains spatial data for each department (a subdivision of region). Next I prepared my SQL query containing sales data for fictional stores selling Adventure Works products in France. The Person.Address table in the AdventureWorks2008R2 database (which you can download from Codeplex) contains a SpatialLocation column which I joined - along with several other tables - to the Sales.Customer and Sales.Store tables. I'll be able to superimpose this data on a map to see where these stores are located. I included the SQL script for this query (as well as the spatial data for France) in the downloadable project that I created for this post. Step 1: Using the Map Wizard to Create a Map of France You can build a map without using the wizard, but I find it's rather useful in this case. Whether you use Business Intelligence Development Studio (BIDS) or Report Builder 3.0, the map wizard is the same. I used BIDS so that I could create a project that includes all the files related to this post. To get started, I added an empty report template to the project and named it France Stores. Then I opened the Toolbox window and dragged the Map item to the report body which starts the wizard. Here are the steps to perform to create a map of France: On the Choose a source of spatial data page of the wizard, select SQL Server spatial query, and click Next. On the Choose a dataset with SQL Server spatial data page, select Add a new dataset with SQL Server spatial data. On the Choose a connection to a SQL Server spatial data source page, select New. In the Data Source Properties dialog box, on the General page, add a connecton string like this (changing your server name if necessary): Data Source=(local);Initial Catalog=Spatial Click OK and then click Next. On the Design a query page, add a query for the country shape, like this: select * from fra_adm1 Click Next. The map wizard reads the spatial data and renders it for you on the Choose spatial data and map view options page, as shown below. You have the option to add a Bing Maps layer which shows surrounding countries. Depending on the type of Bing Maps layer that you choose to add (from Road, Aerial, or Hybrid) and the zoom percentage you select, you can view city names and roads and various boundaries. To keep from cluttering my map, I'm going to omit the Bing Maps layer in this example, but I do recommend that you experiment with this feature. It's a nice integration feature. Use the + or - button to rexize the map as needed. (I used the + button to increase the size of the map until its edges were just inside the boundaries of the visible map area (which is called the viewport). You can eliminate the color scale and distance scale boxes that appear in the map area later. Select the Embed map data in this report for faster rendering. The spatial data won't be changing, so there's no need to leave it in the database. However, it does increase the size of the RDL. Click Next. On the Choose map visualization page, select Basic Map. We'll add data for visualization later. For now, we have just the outline of France to serve as the foundation layer for our map. Click Next, and then click Finish. Now click the color scale box in the lower left corner of the map, and press the Delete key to remove it. Then repeat to remove the distance scale box in the lower right corner of the map. Step 2: Add a Map Layer to an Existing Map The map data region allows you to add multiple layers. Each layer is associated with a different data set. Thus far, we have the spatial data that defines the regional boundaries in the first map layer. Now I'll add in another layer for the store locations by following these steps: If the Map Layers windows is not visible, click the report body, and then click twice anywhere on the map data region to display it. Click on the New Layer Wizard button in the Map layers window. And then we start over again with the process by choosing a spatial data source. Select SQL Server spatial query, and click Next. Select Add a new dataset with SQL Server spatial data, and click Next. Click New, add a connection string to the AdventureWorks2008R2 database, and click Next. Add a query with spatial data (like the one I included in the downloadable project), and click Next. The location data now appears as another layer on top of the regional map created earlier. Use the + button to resize the map again to fill as much of the viewport as possible without cutting off edges of the map. You might need to drag the map within the viewport to center it properly. Select Embed map data in this report, and click Next. On the Choose map visualization page, select Basic Marker Map, and click Next. On the Choose color theme and data visualization page, in the Marker drop-down list, change the marker to diamond. There's no particular reason for a diamond; I think it stands out a little better than a circle on this map. Clear the Single color map checkbox as another way to distinguish the markers from the map. You can of course create an analytical map instead, which would change the size and/or color of the markers according to criteria that you specify, such as sales volume of each store, but I'll save that exploration for another post on another day. Click Finish and then click Preview to see the rendered report. Et voilà...c'est fini. Yes, it's a very simple map at this point, but there are many other things you can do to enhance the map. I'll create a series of posts to explore the possibilities. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Saving in mongoDb with Mongoose, unexpected elements saved

    - by guiomie
    When I write in my mongoDB with mongoose the operation is treated with success, my document is saved, but there is also all kind of weird other sutff written down. It seems to be mongoose code. What could cause this? I add stuff in a specific array with: resultReference.ref[arrayLocation].allEvents.push(theEvent); {id: 11, allEvents: [] } is the structure of a ref element, and I push theEvent in the allEvents array. I then resultReference.save() I use express, mongoose and mongoHQ for database. I tried on a local mongo server, and this annoyance is still there. I've print in my console the document to write before save() and non of this weird code is there. { id 11 allEvents [ 0 { _events { maxListeners 0 } _doc { _id {"$oid": "4eb87834f54944e263000003"} title "Test" allDay false start 2011-11-10 13:00:00 UTC end 2011-11-10 15:00:00 UTC url "/test/4eb87834f54944e263000002" color "#99CCFF" ref "4eb87834f54944e263000002" } _activePaths { paths { title "modify" allDay "modify" start "modify" end "modify" url "modify" color "modify" ref "modify" } states { init { } modify { title true allDay true start true end true url true color true ref true } require { } } stateNames [ 0 "require" 1 "modify" 2 "init" ] } _saveError null _validationError null isNew true _pres { save [ 0 function (next) { // we keep the error semaphore to make sure we don't // call `save` unnecessarily (we only need 1 error) var subdocs = 0 , error = false , self = this; var arrays = this._activePaths .map('init', 'modify', function (i) { return self.getValue(i); }) .filter(function (val) { return (val && val instanceof DocumentArray && val.length); }); if (!arrays.length) return next(); arrays.forEach(function (array) { subdocs += array.length; array.forEach(function (value) { if (!error) value.save(function (err) { if (!error) { if (err) { error = true; next(err); } else --subdocs || next(); } }); }); }); } 1 "function checkForExistingErrors(next) { if (self._saveError){ next(self._saveError); self._saveError = null; } else { next(); } }" 2 "function validation(next) { return self.validate.call(self, next); }" ] } _posts { save [ ] } save function () { var self = this , hookArgs // arguments eventually passed to the hook - are mutable , lastArg = arguments[arguments.length-1] , pres = this._pres[name] , posts = this._posts[name] , _total = pres.length , _current = -1 , _asyncsLeft = proto[name].numAsyncPres , _next = function () { if (arguments[0] instanceof Error) { return handleError(arguments[0]); } var _args = Array.prototype.slice.call(arguments) , currPre , preArgs; if (_args.length && !(arguments[0] === null && typeof lastArg === 'function')) hookArgs = _args; if (++_current < _total) { currPre = pres[_current] if (currPre.isAsync && currPre.length < 2) throw new Error("Your pre must have next and done arguments -- e.g., function (next, done, ...)"); if (currPre.length < 1) throw new Error("Your pre must have a next argument -- e.g., function (next, ...)"); preArgs = (currPre.isAsync ? [once(_next), once(_asyncsDone)] : [once(_next)]).concat(hookArgs); return currPre.apply(self, preArgs); } else if (!proto[name].numAsyncPres) { return _done.apply(self, hookArgs); } } , _done = function () { var args_ = Array.prototype.slice.call(arguments) , ret, total_, current_, next_, done_, postArgs; if (_current === _total) { ret = fn.apply(self, args_); total_ = posts.length; current_ = -1; next_ = function () { if (arguments[0] instanceof Error) { return handleError(arguments[0]); } var args_ = Array.prototype.slice.call(arguments, 1) , currPost , postArgs; if (args_.length) hookArgs = args_; if (++current_ < total_) { currPost = posts[current_] if (currPost.length < 1) throw new Error("Your post must have a next argument -- e.g., function (next, ...)"); postArgs = [once(next_)].concat(hookArgs); return currPost.apply(self, postArgs); } }; if (total_) return next_(); return ret; } }; if (_asyncsLeft) { function _asyncsDone (err) { if (err && err instanceof Error) { return handleError(err); } --_asyncsLeft || _done.apply(self, hookArgs); } } function handleError (err) { if ('function' == typeof lastArg) return lastArg(err); if (errorCb) return errorCb.call(self, err); throw err; } return _next.apply(this, arguments); } errors null } ] } ]

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  • Stream Media and Live TV Across the Internet with Orb

    - by DigitalGeekery
    Looking for a way to stream your media collection across the Internet? Or perhaps watch and record TV remotely? Today we are going to look at how to do all that and more with Orb. Requirements Windows XP / Vista / 7 or Intel based Mac w/ OS X 10.5 or later. 1 GB RAM or more Pentium 4 2.4 GHz or higher / AMD Athlon 3200+ Broadband connections TV Tuner for streaming and recording live TV (optional) Note: Slower internet connections may result in stuttering during playback. Installation and Setup Download and install Orb on your home computer. (Download link below) You’ll want to take the defaults for the initial portion of the install. When we get to the Orb Account setup portion of the install is when we will have to enter information and make some decisions. Choose your language and click Next. We’ll need to create and user account and password. A valid email address is required as we’ll need to confirm the account later. Click Next.   Now you’ll want to choose your media sources. Orb will automatically look for folders that may contain media files. You can add or remove folders click on the (+) or (-) buttons. To remove a folder, click on it once to select it from the list and then click the minus (-) button. To add a folder, click the plus (+) button and browse for the folder. You can add local folders as well as shared folders from networked computers and USB attached storage. Note: Both the host computer running Orb and the networked computer will need to be running to access shared network folders remotely. When you’ve selected all your media files, click Next. Orb will proceed to index your media files… When the indexing is complete, click Next. Orb TV Setup Note: Streaming Live TV to Macs is not currently supported. If you have a TV tuner card connected to your PC, you can opt to configure Orb to stream live or recorded TV. Click Next  to configure TV. Or, choose Skip if you don’t wish to configure Orb for TV.   If you have a Digital tuner card, type in your Zip Code and click Get List to pull your channel listings. Select a TV provider from the list and click Next. If not, click Skip.   You can select or deselect any channels by checking or un-checking the box to each channel. Select Auto Scan to let Orb find more channels or disable the ones with no reception. Click Next when finished.   Next choose an analog provider, if necessary, and click Next.   Select “Yes” or “No” for a set top box and click Next. Just as we did with the Digital tuner, select or deselect any channels by checking or un-checking the box to each channel. Select Auto Scan to let Orb find more channels or disable the ones with no reception. Click Next when finished.   Now we’re finished with the setup. Click Close. Accessing your Media Remotely Media files are accessed through a web-based interface. Before we go any further, however, we’ll need to confirm our username and password. Check your inbox for an email from Orb Networks. Click the enclosed confirmation link. You’ll be prompted to enter the username and password you selected in your browser then click Next.   Your account will be confirmed. Now, we’re ready to enjoy our media remotely. To get started, point your browser to the MyCast website from your remote computer. (See link below) Enter your credentials and click Log In. Once logged in, you’ll be presented with the MyCast Home screen. By default you’ll see a handful of “channels” such as a TV program guide, random audio and photos, video favorites, and weather. You can add, remove, or customize channels. To add additional channels, click on Add Channels at the top right…   …and select from the dropdown list. To access your full media libraries, click Open Application at the top left and select from one of the options. Live and Recorded TV If you have a TV tuner card you configured for Orb, you’ll see your program guide on the TV / Webcams screen. To watch or record a show, click on the program listing to bring up a detail box. Then click the red button to record, or the green button to play. When recording a show, you’ll see a pulsating red icon at the top right of the listing in the program guide. If you want to watch Live TV, you may be prompted to choose your media player, depending on your browser and settings. Playback should begin shortly.   Note for Windows Media Center Users If you try to stream live TV in Orb while Windows Media Center is running on your PC, you’ll get an error message. Click the Stop MediaCenter button and then try again.   Audio On the Audio screen, you’ll find your music files indexed by genre, artist, and album. You can play a selection by clicking once and then clicking the green play button, or by simply double-clicking.   Playback will begin in the default media player for the streaming format.   Video Video works essentially the same as audio. Click on a selection and press the green play button, or double-click on the video title. Video playback will begin in the default media player for the streaming format.   Streaming Formats You can change the default streaming format in the control panel settings. To access the Control Panel, click on Open Applications  and select Control Panel. You can also click Settings at the top right.   Select General from the drop down list and then click on the Streaming Formats tab. You are provided four options. Flash, Windows Media, .SDP, and .PLS.   Creating Playlists To create playlists, drag and drop your media title to the playlist work area on the right, or click Add to playlist on the top menu. Click Save when finished.    Sharing your Media Orb allows you to share media playlists across the Internet with friends and family. There are a few ways to accomplish this. We’ll start by click the Share button at the bottom of the playlist work area after you’ve compiled your playlist. You’ll be prompted to choose a method by which to share your playlist. You’ll have the option to share your playlist publicly or privately. You can share publically through links, blogs, or on your Orb public profile.  By choosing the Public Profile option, Orb will automatically create a profile page for you with a URL like http://public.orb.com/username that anyone can easily access on the Internet. The private sharing option allows you to invite friends by email and requires recipients to register with Orb. You can also give your playlist a custom name, or accept the auto-generated title. Click OK when finished. Users who visit your public profile will be able to view and stream any of your shared playlists to their computer or supported device.   Portable Media Devices and Smartphones Orb can stream media to many portable devices and 3G phones. Streaming audio is supported on the iPhone and iPod Touch through the Safari browser. However, video and live TV streaming requires the Orb Live iPhone App.  Orb Live is available in the App store for $9.99. To stream media to your portable device, go to the MyCast website in your mobile browser and login. Browse for your media or playlist. Make a selection and play the media. Playback will begin. We found streaming music to both the Droid and the iPhone to work quite nicely. Video playback on the Droid, however, left a bit to be desired. The video looked good, but the audio tended to be out of sync. System Tray Control Panel By default Orb runs in the system tray on start up. To access the System Tray Control Panel, right-click on the Orb icon in the system tray and select Control Panel. Login with your Orb username and  password and click OK.   From here you can add or remove media sources, add manage accounts, change your password, and more. If you’d rather not run Orb on Startup, click the General icon.   Unselect the checkbox next to Start Orb when the system starts. Conclusion It may seem like a lot of steps, but getting Orb up and running isn’t terribly difficult. Orb is available for both Windows and Intel based Macs. It also supports streaming to many Game Consoles such as the Wii, PS3, and XBox 360. If you are running Windows 7 on multiple computers, you may want to check out our write-up on how to stream music and video over the Internet with Windows Media Player 12. Downloads Download Orb Logon to MyCast Similar Articles Productive Geek Tips Stream Music and Video Over the Internet with Windows Media Player 12Enable Media Streaming in Windows Home Server to Windows Media PlayerStream Media from Windows 7 to XP with VLC Media PlayerShare Digital Media With Other Computers on a Home Network with Windows 7Automatically Start Windows 7 Media Center in Live TV Mode TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Looking for Good Windows Media Player 12 Plug-ins? Find Out the Celebrity You Resemble With FaceDouble Whoa ! Use Printflush to Solve Printing Problems Icelandic Volcano Webcams Open Multiple Links At One Go

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  • Suggestions for lightweight, thread-safe scheduler

    - by nirvanai
    I am trying to write a round-robin scheduler for lightweight threads (fibers). It must scale to handle as many concurrently-scheduled fibers as possible. I also need to be able to schedule fibers from threads other than the one the run loop is on, and preferably unschedule them from arbitrary threads as well (though I could live with only being able to unschedule them from the run loop). My current idea is to have a circular doubly-linked list, where each fiber is a node and the scheduler holds a reference to the current node. This is what I have so far: using Interlocked = System.Threading.Interlocked; public class Thread { internal Future current_fiber; public void RunLoop () { while (true) { var fiber = current_fiber; if (fiber == null) { // block the thread until a fiber is scheduled continue; } if (fiber.Fulfilled) fiber.Unschedule (); else fiber.Resume (); //if (current_fiber == fiber) current_fiber = fiber.next; Interlocked.CompareExchange<Future> (ref current_fiber, fiber.next, fiber); } } } public abstract class Future { public bool Fulfilled { get; protected set; } internal Future previous, next; // this must be thread-safe // it inserts this node before thread.current_fiber // (getting the exact position doesn't matter, as long as the // chosen nodes haven't been unscheduled) public void Schedule (Thread thread) { next = this; // maintain circularity, even if this is the only node previous = this; try_again: var current = Interlocked.CompareExchange<Future> (ref thread.current_fiber, this, null); if (current == null) return; var target = current.previous; while (target == null) { // current was unscheduled; negotiate for new current_fiber var potential = current.next; var actual = Interlocked.CompareExchange<Future> (ref thread.current_fiber, potential, current); current = (actual == current? potential : actual); if (current == null) goto try_again; target = current.previous; } // I would lock "current" and "target" at this point. // How can I do this w/o risk of deadlock? next = current; previous = target; target.next = this; current.previous = this; } // this would ideally be thread-safe public void Unschedule () { var prev = previous; if (prev == null) { // already unscheduled return; } previous = null; if (next == this) { next = null; return; } // Again, I would lock "prev" and "next" here // How can I do this w/o risk of deadlock? prev.next = next; next.previous = prev; } public abstract void Resume (); } As you can see, my sticking point is that I cannot ensure the order of locking, so I can't lock more than one node without risking deadlock. Or can I? I don't want to have a global lock on the Thread object, since the amount of lock contention would be extreme. Plus, I don't especially care about insertion position, so if I lock each node separately then Schedule() could use something like Monitor.TryEnter and just keep walking the list until it finds an unlocked node. Overall, I'm not invested in any particular implementation, as long as it meets the requirements I've mentioned. Any ideas would be greatly appreciated. Thanks! P.S- For the curious, this is for an open source project I'm starting at http://github.com/nirvanai/Cirrus

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