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  • How can I use cURL to open multiple URLs simultaneously with PHP?

    - by Rob
    Here is my current code: $SQL = mysql_query("SELECT url FROM urls") or die(mysql_error()); //Query the urls table while($resultSet = mysql_fetch_array($SQL)){ //Put all the urls into one variable // Now for some cURL to run it. $ch = curl_init($resultSet['url']); //load the urls curl_setopt($ch, CURLOPT_TIMEOUT, 2); //No need to wait for it to load. Execute it and go. curl_exec($ch); //Execute curl_close($ch); //Close it off } //While loop I'm relatively new to cURL. By relatively new, I mean this is my first time using cURL. Currently it loads one for two seconds, then loads the next one for 2 seconds, then the next. however, I want to make it load ALL of them at the same time. I'm sure its possible, I'm just unsure as to how. If someone could point me in the right direction, I'd appreciate it.

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  • Performance hit from C++ style casts?

    - by Trevor Boyd Smith
    I am new to C++ style casts and I am worried that using C++ style casts will ruin the performance of my application because I have a real-time-critical deadline in my interrupt-service-routine. I heard that some casts will even throw exceptions! I would like to use the C++ style casts because it would make my code more "robust". However, if there is any performance hit then I will probably not use C++ style casts and will instead spend more time testing the code that uses C-style casts. Has anyone done any rigorous testing/profiling to compare the performance of C++ style casts to C style casts? What were your results? What conclusions did you draw?

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  • file_get_contents() Connection timed out problem.

    - by Syom
    i use file_get_contents() to get dinamic data. here is my script... $str = file_get_contents("http://cba.am/"); some sript here... it works fine for a long time, but now it returns Connection timed out. and what is strange, when i run the script from local server, it works fine. could you tell me why, and what can i do, to solve this. maybe i must set the higher timeout time in php.ini? Thanks

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  • form submits in FireFox when any button on page is clicked

    - by RememberME
    First time using Asp.net-mvc and originally followed the NerdDinner tutorial. My form submit button looks like this: <p> <input type="submit" value="Save" /> </p> I've now added another button to the page with jQuery code attached. It works in IE, but when I test in FireFox the form submits. I tried adding another button, this time with no attached jQuery code and the same thing happens. When the button is clicked, the form submits. <button id="random-button">Do Nothing</button> ??

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  • A gridview for debugging collections?

    - by Llewellyn
    Hi Guys, I'm working with fairly large generic collections and I need a quick way to view all the items and their properties in these collections while debugging. When I say view all the items, I mean I would like to view the collection as if it was bound to say.. a gridview. That was I could see all all the item properties listed. Currently VS2010 displays the collection object during debugging, but it takes several clicks before I can view any item's properties within the collection. As I'm using collection with 50 to 100 items in them, I've having a hard time getting a feel for the collection data because of having to click through to view each individual item's properties during debugging. Do you have any ideas or know of a visual studio plugin that can help display collections in a table format or gridview format? Thanks for you time

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  • using javascript with help of jquery

    - by tazim
    Code written by me based on previous suggestions as follows . Any help to efficinetly use jquery in order to make this code work . Thanks in advance $(document).ready(function() { self.setInterval("clock()",1000); $("button").click(function() { clock; }); function clock() { clock(); time=new Date(); var s = "<p>" + time + "</p>"; $(s).appendTo("div"); } }); <button > Click Me button </div> <div id="someid"></div>

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  • Using pow() for large number

    - by g4ur4v
    I am trying to solve a problem, a part of which requires me to calculate (2^n)%1000000007 , where n<=10^9. But my following code gives me output "0" even for input like n=99. Is there anyway other than having a loop which multilplies the output by 2 every time and finding the modulo every time (this is not I am looking for as this will be very slow for large numbers). #include<stdio.h> #include<math.h> #include<iostream> using namespace std; int main() { unsigned long long gaps,total; while(1) { cin>>gaps; total=(unsigned long long)powf(2,gaps)%1000000007; cout<<total<<endl; } }

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  • Sync between local service with a thread and an activity

    - by Henrik
    Hello all, I'm trying to think of a way on how to sync in between a local service and the main activity. The local service has, A thread with a socket connection that could receive data at any time. A list/array with data. At any time the socket could receive data and add it to the list. The activity needs to display this data. So when the activity starts up it needs to attach or start the local service and fetch the list. It also needs to be notified if the list is updated. I think I would need to sync my list somehow so the local service does not add a new entry to it while the activity fetches the list when connecting to the service. Any ideas? Thanks.

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  • Using ggplot in R

    - by g256
    I have a time series cvs file like this (in var there are the values): Hour,Date,Type,val1,val2,val3,val4,val5,val6..... 0100,0153,aaa, 0100,0153,bbb, 0100,0153,ccc, 0100,0153,ddd, 0200,0153,aaa, 0200,0153,bbb, 0200,0153,ccc, 0200,0153,ddd, . . 0100,0154,aaa, 0100,0154,bbb, 0100,0154,ccc, 0100,0154,ddd, . . I would like to use ggplot to plot the barplot mean of the time series of val1,val2,... for each type. One plot for each type except for ccc and ddd that should be considered as one type, so for this I should first sum up the value, then take the mean, then plot). So three plot at the end. Thanks for advice.

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  • Drupal 6 fails to build menu router and links

    - by Xinglin Zhang
    When I enable a new menu in Drupal (for example, mymodule), Drupal should be able to get the menu items from mymodule_menu (hook_menu), process the items and insert the menu items to menu_router and menu_links page. However, my Drupal fails to do so. Each time I enable a module (written by me or modules contributed by others, or core modules), Drupal does not seem to get the new information. The menu items defined in the newly enabled module are not processed and inserted to Drupal's menu system. That means the newly enabled module has no chance to work-- because it's inaccessible. I did fix this by manually insert the menu item information for the new module into the menu_router and menu_links table and the new menu started working. But this is a nightmare if I have to do this each time I enable a module. Any one has ever had the same problem? How to fix this? Thank you in advance.

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  • Adding a clustered index to a SQL table: what dangers exist for a live production system?

    - by MoSlo
    Right, keep in mind i need to describe this by abstracting all possible confidential info: I've been put in charge of a 10-year old transactional system of which the majority business logic is implemented at database level (triggers, stored procedures etc). Win2000 server, MSSQL 2000 Enterprise. No immediate plans for replacing/updating the system are being considered :( The core process is a program that executes transactions - specifically, it executes a stored procedure with various parameters, lets call it sp_ProcessTrans. The program executes the stored procedure at asynchronous intervals. By itself, things work fine. But there are 30 instances of this program on remotely located workstations, all of them asynchronously executing sp_ProcessTrans and then retrieving data from the SQL server (execution is pretty regular - ranging 0 to 60 times a minute, depending on what items the program instance is responsible for) . Performance of the system has dropped considerably with 10 yrs of data growth: the reason is the deadlocks and specifically deadlock wait times. The deadlock is on the Employee table. I have discovered: In sp_ProcessTrans' execution, it selects from an Employee table 7 times (dont ask) The select is done on a field that is NOT the primary key No index exists on this field. Thus a table scan is performed. 7 times. per transaction So the reason for deadlocks is clear. I created a non-unique ordered clustered index on the field (field looks good, almost unique, NUM(7), very rarely changes). Immediate improvement in the test environment. The problem is that i cannot simulate the deadlocks in a test environment (I'd need 30 workstations; i'd need to simulate 'realistic' activity on those stations, so visualization is out). I need to know if i must schedule downtime. Creating an index shouldn't be a risky operation for MSSQL, but is there any danger (data corruption in transactions/select statements/extra wait time etc) to create this field index on the production database while the transactions are still taking place? (although i can select a time when transactions are fairly quiet through the 30 stations) Are there any hidden dangers i'm not seeing (not looking forward to needing to restore the DB if something goes wrong, restoring would take a lot of time with 10yrs of data).

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  • Agile web development with Rails 4 interface difficulties

    - by Luke Annison
    I've been following along with the examples in the book in making a online catalog and am having a couple of discouraging difficulties in Chapter 8 task C: Catalog display. I have input the code for the stylesheets as instructed but it has created a slightly skewed result as compared to what is shown in the book. Whilst minor and aesthetic in nature its a little shock to my confidence and slightly irritating when trying to carry on through the book. I have too little rep to post a pic, but heres the link: http://s11.postimage.org/3pwlzfiwj/Screen_Shot_2012_10_08_at_22_29_56.png) As you can see the boarder seems a little confused and the image at the top is covering the header text. I've been through the code time and time again but can't seem find out where I've gone wrong. Could anybody give me some clues?

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  • How to default-initialize local variables of built-in types in C++?

    - by sharptooth
    How do I default-initialize a local variable of primitive type in C++? For example if a have a typedef: typedef unsigned char boolean;//that's Microsoft RPC runtime typedef I'd like to change the following line: boolean variable = 0; //initialize to some value to ensure reproduceable behavior retrieveValue( &variable ); // do actual job into something that would automagically default-initialize the variable - I don't need to assign a specific value to it, but instead I only need it to be intialized to the same value each time the program runs - the same stuff as with a constructor initializer list where I can have: struct Struct { int Value; Struct() : Value() {} }; and the Struct::Value will be default-initialized to the same value every time an instance is cinstructed, but I never write the actual value in the code. How can I get the same behavior for local variables?

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  • Check if a symlink has changed

    - by BCS
    I have a daemon that, when it's started, loads its data from a directory that happens to be a symlink. Periodically, new data is generated and the symlink updated. I want a bash script that will check if the current symlink is the same as the old one (that the daemon started with) and if not, restart the daemon. My current thought is: if [[ ! -e $old_dir || $(readlink "$data_dir") == $(readlink "$old_dir") ]]; then echo restart ... ln "$(readlink "$data_dir")" "$old_dir" -sf else echo no restart fi The abstract requirement is: each time the script runs, it needs to check if a symlink on a given path now points to a something other than it did the last time and if so do something. (The alternative would be to check if the data at the path has changed but I don't see that being any cleaner.) My questions: Is this a good approach? Does anyone have a better idea? Where should I put $old_dir?

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  • How to get Flex app to load quicker?

    - by Shef
    We've got an app written in Flex that displays data from our app. The .swf file is only 427kb, but it takes a full five seconds to load in Firefox. This is a headache for our users because they need to access the page that contains the app frequently. (The app displays documents, and it's really slow to march through a list of them). I've confirmed that it's not a slow web server problem. The .swf appears to be cached in the browser. Firebug reports that every time the web page accesses the .swf, the app server returns a "304 Not Modified" response, meaning that the load time from the server is almost zero. Is there anything we can do to debug this issue? Or is the Flash player just slow?

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  • Observing 'click' event on <a> tag generated by scriptaculous Builder

    - by bratsche
    I'm using scriptaculous Builder to generate some DOM elements dynamically, and one of them is a link tag. I wasn't sure how to generate this with the click callback inline along with the rest of the Builder code, so I'm generating the link tag ahead of time and then inserting it with the rest of the Builder phase. The problem is that the callback for the link is never actually executed when I click the link, and the URL bar changes to http://localhost/foo/bar/# instead. The callback method is a part of my class, so I'm binding it as an event listener ahead of time. var Foo = Class.create ({ initialize: function () { this.closeBinding = this.doClose.bindAsEventListener (this); }, generate: function () { /* Create the link and bind the click listener */ var close_link = Builder.node ('a', { href: '#' }, 'Close'); Event.observe (close_link, 'click', this.closeBinding); /* Generate the new DOM nodes */ return Builder.node ('div', [ Builder.node ('h2', 'This is a test'), close_link ]); }, doClose: function (evt) { /* This code is never called when I click the link. */ } });

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  • How to create string "Version 1.0" in C#

    - by Rohit
    I have to store versionName of a template. VersionName is autoincremented.If last versionName is "Version 1.0", next should be "version 2.0". First time when a template is created, I have to store "Version 1.0". I am using VersionName = "Version "+((LatestVersion+1).ToString()) LatestVersion holds the last version which is 0 in case added for first time. This seems to be a ugly workaround and doesnot even yield Version 1.0. it yields Version 1. I Tried with Version class as well,it does not work. How to accomplish this.Please suggest

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  • how to read csv file in jquery using codeigniter framework

    - by webghost
    suppose this is my csv file fileempId,lastName,firstName,middleName,street1,street2,city,state,zip,gender,birthDate,ssn,empStatus,joinDate,workStation,location,custom1,workState,salary,payFrequency,FITWStatus,FITWExemptions,DD1Routing,DD1Account,DD1Amount,DD1AmountCode,DD1Checking,DD2Routing,DD2Account,DD2Amount,DD2AmountCode,DD2Checking 1,Dela Cruz,Juano,Santos,,,,,,1,,,Part Time Internship,, asd Division, Makati,one, asd,150,Bi Weekly,Not Applicable,100,,,,,,1234,9876,100,SAVINGS,BLANK 3,Palogan,Ralph,,,,,,,1,11-Mar-11,,Full Time Contract,2-Mar-11, sdf Department, pasay,, ,,,Not Applicable,,,,,,,,,,, 5,San,Goku,,,,hidden leaf,,,1,11-Mar-11,,,,,,,,,,Not Applicable,0,,,,,,,,,, this is my form <label>Choose File:</label><font color="#FF0000">*</font> <input type="file" name="file" id="file" /> <input type="button" id="importButton" value="Import" name="importButton" /> how to read the data in csv and store it to mysql database(codeigniter)? Any example code on how to do it,.

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  • jquery replaceWith implications

    - by Vlad Ioffe
    I am using replaceWith for input type=file to handle changes of the file the user wants to upload. I have this code: $('#add_cv_input').change(function() { // here is some code else { alert('put one of this: pdf doc docx'); $("#add_cv_input").replaceWith('<input id="add_cv_input" type="file"/>'); } }); now the problem is that this jquery changed event does not being called after the first time that the user had uploaded the wrong extension. I don't have a clue why this is happening. Everything works fine if at the first time the user uploads a valid extension and then he changes it to other valid extension.

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  • Windows Macro + Hot Key - Paste Without Formatting

    - by JasonStoltz
    Not sure if this appropriate to put as a question or not? It's sort of a scripting question I think. Just down vote me if not :p Basically, what I'm looking for is a way to push a windows hotkey and have whatever text is in the clipboard be stripped of formatting. An example of what the macro could do: I push (whatever hotkey combo here) open notepad.exe Paste to notepad from clipboard Select all text in notepad Copy/Cut all text from notepad Close notepad I'm just wondering if someone has done something like this before, or knows how it could be accomplished. I think this could be a huge time-saver for almost anyone. I find myself doing this all the time when cutting and pasting between different office applications, etc.

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  • allow editing of config files by WIndows Server 2008 admins running non-elevated?

    - by Justin Grant
    My company produces a cross-platform server application which loads its configuration from user-editable configuration files. On Windows, config files are locked down at Setup time to allow reading by all users but restrict editing to Administrators only. Unfortunately, on Windows Server 2008, even local administrators no longer have admin privileges (because of UAC) unless they're running an elevated app. My question is: if a Windows Server 2008 admin wants to edit an admins-only config file, how does he normally do it? Is he forced to use a text editor which is smart enough to auto-elevate when elevation is needed, like Windows Explorer does in response to access denied errors? Or is there something that we can do in our app (e.g. in ACLs we lay down at setup time) which signal apps (or explorer) that elevation is needed before editing the file or which otherwise make our app friendlier to admins running on modern Windows OS's?

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  • odd behavior setting timeouts inside a function with global references in javascript

    - by Pablo
    Here is the the function and the globals: $note_instance = Array(); $note_count = 0; function create(text){ count = $note_count++; time = 5000; $note_instance[count] = $notifications.notify("create", text); setTimeout(function(){ $note_instance[count].close() }, time); } The function simply opens a notification, a sets a timeout to close it in 5 seconds. so if i call this create("Good Note 1"); create("Good Note 2"); create("Good Note 3"); Ecah note should close 5 seconds from their creation, however always and only the last note closes, in this case "Good Note 3". Each note object has its own entry in the the $note_instance global array so the timeouts should no be overwriting themselves. What am i missing here folks? Thanks in advance

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  • Significance of date 02/31/2157?

    - by dpatchery
    I work in a large scale IT support environment. Twice now we have seen an invalid date of 02/31/2157 being inserted in an Oracle DATE column. So far I have not been able to reproduce this problem, but it appears to be happening occasionally when a user attempts to save '00/00/0000' into the column. I believe the value is originating from a PowerBuilder DataWindow update. The application uses myriad libraries for all sorts of technologies, so this question may be a bit vague, but... Has anyone seen the date 02/31/2157 in some established library that Oracle could be defaulting to when some other invalid date is entered? Perhaps an end-of-time concept analogous to the beginning-of-time date of 1/1/1970?

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  • To create new DB connection or not?

    - by Yeti
    I'm running a cron job (every 15 minutes) which takes about a minute to execute. It makes lots of API calls and stores data to the database. Right now I create a mysql connection at the beginning and use the same connection through out the code. Most of the time is spent making the API calls. Will it be more efficient to create a new database connection only when it's time to store the data (below)? Kill the last connection Wait for API call to complete Create new DB connection Execute query Goto 1

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  • Store Observer not being called always

    - by Nixarn
    Has anyone else here experienced problems with their Store Observer class not being called always when the user for instance cancels a request (or purchases something) We just had our update that brought in app purchases go live last night, and before that we had obviously tested everything tons of times against the Sandbox and everything was working fine. Now however, when the update went live in a real environment we keep getting issues with the store. For instance, in a freshly booted iPhone / iPod, the first time you run the app, if you then try to make a purchase and then immediately cancel it from the first dialog, it seems as if the callback for the cancel is not getting called. If you then restart the app it seems as if it always works after that, or at least. Same thing with other callbacks, seems as if our store observer isn't listening as the callbacks aren't being registered on the phone. One example of this is if you purchase something, then nothing will happen (if this is the first time the app is launched at least). You get the purchase successful dialog from the app store but it seems as if our own code isn't called. If you then quit the app and restart it the callback gets called. Same problem happens if you for instance try to start a request to download all previous purchases and then immediately cancel it as the first dialog pops up, if you do that then the callback for a failed restore is not called, until you then restart the app and try it again, then it always seems to work. The way we have implemented our store observer is by creating a custom class that's implements the SKPaymentTransactionObserver interface. @interface StoreObserver : NSObject<SKPaymentTransactionObserver> In the class we have implemented the following methods: - (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions - (void)paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue - (void)paymentQueue:(SKPaymentQueue *)queue restoreCompletedTransactionsFailedWithError:(NSError *)error The way our restore process works is that if you tap on the button that allows you to download all we simply run the restoreCompletedTransactions code as follows: [[SKPaymentQueue defaultQueue] restoreCompletedTransactions]; However, the callback, restoreCompletedTransactionsFailedWithError, which has been implemented in the store observer, does not always get called when we try to cancel the request. This happens when you boot the iPhone / iPod and try this for the first time. If you after that restart the app everything works fine. The StoreObserver class is created when our app is launched, just by running the following code: pStoreObserver = [[StoreObserver alloc] init]; [[SKPaymentQueue defaultQueue] addTransactionObserver:pStoreObserver]; Has anyone else had any similar experiences? Or does anyone have any suggestions on how to solve this? As I said, in the sandbox environment everything was working fine, no issues whatsoever, but now once it's gone live we're experiencing these.

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