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  • Java - What's the most efficient way of removing a set of elements from an Array[]

    - by fraido
    I've something like this Object[] myObjects = ...(initialized in some way)... int[] elemToRemove = new int[]{3,4,6,8,...} What's the most efficient way of removing the elements of index position 3,4,6,8... from myObjects ? I'd like to implement an efficient Utility method with a signature like public Object[] removeElements(Object[] object, int[] elementsToRemove) {...} The Object[] that is returned should be a new Object of size myObjects.length - elemToRemove.length

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  • faster strlen ?

    - by Jack
    Typical strlen() traverse from first character till it finds \0. This requires you to traverse each and every character. In algorithm sense, its O(N). Is there any faster way to do this where input is vaguely defined. Like: length would be less than 50, or length would be around 200 characters. I thought of lookup blocks and all but didn't get any optimization.

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  • Longest item in array

    - by c00lryguy
    Is there an easier way than below to find the longest item in an array? arr = [ [0,1,2], [0,1,2,3], [0,1,2,3,4], [0,1,2,3] ] longest_row = [] @rows.each { |row| longest_row = row if row.length > longest_row.length } p longest_row # => [0,1,2,3,4]

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  • NSUrlconnection problem receiving data from some filehosts

    - by Tammo
    hello again, i am trying to develop an downloadmanager. i can now download files from almost anywhere on linkclick. in the - (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType i check if the url is a url to a binaryfile like a zipfile. than i setup a nsurlconnection NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:20.0]; [urlRequest setValue:@"User-Agent" forHTTPHeaderField:@"Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en) AppleWebKit/418.9 (KHTML, like Gecko) Safari/419.3"]; NSURLConnection *mainConnection = [NSURLConnection connectionWithRequest:urlRequest delegate:self]; if (nil == mainConnection) { NSLog(@"Could not create the NSURLConnection object"); } (void)connection:(NSURLConnection )connection didReceiveResponse:(NSURLResponse)response { self.tabBarController.selectedIndex=1; [receivedData setLength:0]; percent = 0; localFilename = [[[url2 absoluteString] lastPathComponent] copy]; NSLog(localFilename); NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0] ; NSString *appFile = [documentsDirectory stringByAppendingPathComponent:localFilename]; [[NSFileManager defaultManager] createFileAtPath:appFile contents:nil attributes:nil]; [downloadname setHidden:NO]; [downloadname setText:localFilename]; expectedBytes = [response expectedContentLength]; exp = [response expectedContentLength]; NSLog(@"content-length: %lli Bytes", expectedBytes); file = [[NSFileHandle fileHandleForUpdatingAtPath:appFile] retain]; if (file) { [file seekToEndOfFile]; } } (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { if (file) { [file seekToEndOfFile]; } [file writeData:data]; [receivedData appendData:data]; long long resourceLength = [receivedData length]; float res = [receivedData length]; percent = res/exp; [progress setHidden:NO]; [progress setProgress:percent]; NSLog(@"Remaining: %lli KB", (expectedBytes-resourceLength)/1024); [kbleft setHidden:NO]; [kbleft setText:[NSString stringWithFormat:@"%lli / %lli KB", expectedBytes/1024 ,(resourceLength)/1024]]; } in the connectiondidfinish loading i close the file. all working fine for nearly every hoster except hosters wich have a capture procedure before like filedude.com in the uiwebview i can surf to the downloadpage enter the captcha and get the downloadlink. when i click on it the file will be created in the documentsdir with the filename and the download starts but he dont get any data. every file has 0kb and the NSLog(@"content-length: %lli Bytes", expectedBytes); gives out something like 100-400 byte . can somebody help me solve this problem? kind regards

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  • can i write a schema that all XML are valid to it ?

    - by Gady
    Hi, i need to write a schema that all xml instances are valid to it. i tried: <xs:element name="Arguments"> <xs:complexType> <xs:sequence> <xs:any namespace="##any" minOccurs="0" maxOccurs="unbounded" processContents="lax" /> </xs:sequence> </xs:complexType> but it enforces a root element named Arguments. is there a way for the root to be Any ?

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  • Python - output from functions?

    - by Seafoid
    Hi I have a very rudimentary question. Assume I call a function, e.g., def foo(): x = 'hello world' How do I get the function to return x in such a way that I can use it as the input for another function or use the variable within the body of a program? When I use return and call the variable within another functions I get a NameError. Thanks, S :-)

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  • index seems to be out of sync for jquery .keydown and .click methods

    - by Growler
    I'd like to navigate images using both keyboard and mouse (clicking left and right arrow images). I'm using Jquery to do this, but the shared imgIndex seems to be off from the .keydown function and the .click function... Whenever .keydown function -- or ++ the imgIndex, isn't that changed index also used in the click function? So shouldn't they always be on the same index? keydown function: <script type="text/javascript"> var imgArray = [<?php echo implode(',', getImages($site)) ?>]; $(document).ready(function() { var img = document.getElementById("showimg"); img.src = imgArray[<?php echo $imgid ?>]; var imgIndex = <?php echo $imgid ?>; alert(imgIndex); $(document).keydown(function (e) { var key = e.which; var rightarrow = 39; var leftarrow = 37; var random = 82; if (key == rightarrow) { imgIndex++; if (imgIndex > imgArray.length-1) { imgIndex = 0; } img.src = imgArray[imgIndex]; } if (key == leftarrow) { if (imgIndex == 0) { imgIndex = imgArray.length; } img.src = imgArray[--imgIndex]; } }); click function: Connected to left and right clickable images $("#next").click(function() { imgIndex++; if (imgIndex > imgArray.length-1) { imgIndex = 0; } img.src = imgArray[imgIndex]; }); $("#prev").click(function() { if (imgIndex == 0) { imgIndex = imgArray.length; } img.src = imgArray[--imgIndex]; }); }); Just so you have some visibility into the getImages php function: <?php function getImages($siteParam) { include 'dbconnect.php'; if ($siteParam == 'artwork') { $table = "artwork"; } else { $table = "comics"; } $catResult = $mysqli->query("SELECT id, title, path, thumb, views, catidFK FROM $table"); $img = array(); while($row = $catResult->fetch_assoc()) { $img[] = "'" . $row['path'] . "'"; } return $img; } ?> Much appreciated! Snapshot of where the script is on "view image.php"

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  • How to test if a string has a certain unicode char?

    - by Ruben Trancoso
    Supose you have a command line executable that receives arguments. This executalbe is widechar ready and you want to test if one of this arguments starts with an HYPHEN case in which its an option: command -o foo how you could test it inside your code if you don't know the charset been used by the host? Should be not possible to a given console to produce the same HYPHEN representation by another char in the widechar forest? (in such case it would be a wild char :P) int _tmain(int argc, _TCHAR* argv[]) { std::wstring inputFile(argv[1]); if(inputFile->c_str() <is an HYPHEN>) { _tprintf(_T("First argument cannot be an option")); } }

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  • What is the best way to expose a callback API - C++

    - by rursw1
    Hi, I have a C++ library that should expose some system\ resource calls as callbacks from the linked application. For example: the interfacing application (which uses this library) can send socket management callback functions - send, receive, open, close etc., and the library will use this implementation in stead of the library's implementation. (This way enables the application to manage the sockets by itself, can be useful). This library has to expose also more callbacks, like, for example, a password validation, so I wonder if there is a preferred method to expose the callback sending option in one API. Something like: int AddCallbackFunc (int functionCallbackType, <generic function prototype>, <generic way to pass some additional arguments>) Then within my library I will assign the callback to the appropriate function pointer according to the functionCallbackType parameter. Is there any way to implement it in a generic way which will fit ANY function prototype and ANY additional arguments? Your help will be more than appreciated... Thanks!

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  • Dom Element onclick (MooTools :: optionally)

    - by Theofanis Pantelides
    Consider the following example: function async_callback(array1, array2, array3) { // All arrays are equal length for(var i = 0; i < array1.length; i++) { var myElement = new Element('div', { 'id': 'dvMy' + i, 'events': { 'click': function() { SomeFunction(array1[i], array2[i], array3[i] } }}); $(document).appendChild(myElement); } } Now when I click my element, I get a null value for all three arguments. I even tried doing: myElement.onclick = SomeFunction; // but this won't allow arguments I know I can create a string and use eval() and that does work, but I don't like eval(). Any ideas??? btw: This is a simple example to replicate the problem, and not actual code.

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  • T-SQL get SELECTed value of stored procedure

    - by David
    In T-SQL, this is allowed: DECLARE @SelectedValue int SELECT @SelectedValue = MyIntField FROM MyTable WHERE MyPrimaryKeyField = 1 So, it's possible to get the value of a SELECT and stuff it in a variable (provided it's scalar, obviously). If I put the same select logic in a stored procedure: CREATE PROCEDURE GetMyInt AS SELECT MyIntField FROM MyTable WHERE MyPrimaryKeyField = 1 Can I get the output of this stored procedure and stuff it in a variable? Something like: DECLARE @SelectedValue int SELECT @SelectedValue = EXEC GetMyInt (I know the syntax above is not allowed because I tried it!)

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  • Constructors for C++ objects

    - by sasquatch
    I have class Person as following : class Person { char* name; int age; }; Now I need to add two contructors. One taking no arguments, that inserts field values to dynamically allocated resources. Second taking (char*, int) arguments initialized by initialization list. Last part is to define a destructor showing information about destroying objects and deallocating dynamically allocated resources. How to perform this task ? That's what I already have : class Person { char* name; int age; public: Person(){ this->name = new *char; this->age = new int; } Person(char* c, int i){ } };

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  • Getting a partial path to a file in a bash script

    - by Massif
    I have a path that is stored in a variable $FULLPATH="/this/is/the/path/to/my/file.txt" I also have another variable containing a partial path $PARTIAL="/this/is/the/" I want to remove the partial path from the full path so that I am left with: path/to/my/file.txt What's the best way to do this?

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  • Control is set to false, jQuery selector fails

    - by Damien Joe
    Hi I have some controls on an asp.net modal which I show manually via code behind. Now I am trying to attach a selector on one of the controls inside pageLoad(), problem being is that the modal container is initially set to visible=false. I tried checking for length but it still throws exception if ($('#<%= myControl.ClientId %>').length > 0) { $('#<%= myControl.ClientID %>').click(function() { // Do work }); } Compiler Error Message: CS0103: The name 'myControl' does not exist in the current context

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  • jQuery: What to do with the list that sortable('serialize') returns?

    - by bartclaeys
    With jQuery I'm retrieving positions of a sortable list using 'serialize', like this: var order = $('ul').sortable('serialize'); The variable 'order' then receives the following: id[]=2&id[]=3&id[]=1&id[]=4&id[]=5 Now how can I use this data in an ajax call? This is how I plan to do it, but it's ugly and I can't change the parameter name 'id': $.post('ajax.php?'+order,{action:'updateOrder'}); Maybe I need to unserialize, then implode the variable 'order' and assign it to just one parameter?

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  • log in and send sms with java

    - by noobed
    I'm trying to log into a site and afterwards to send a SMS (you can do that for free by the site - it's nothing more than just enter some text into some fields and 'submit'). I've used wireshark to track some of the post/get requests that my machine has been exchanging with the server - when using the browser. I'd like to paste some of my Java code: URL url; String urlP = "maccount=myRawUserName7&" + "mpassword=myRawPassword&" + "redirect_http=http&" + "submit=........"; String urlParameters = URLEncoder.encode(urlP, "CP1251"); HttpURLConnection connection = null; // Create connection url = new URL("http://www.mtel.bg/1/mm/smscenter/mc/sendsms/ma/index/mo/1"); connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("POST"); //I'm not really sure if these RequestProperties are necessary //so I'll leave them as a comment // connection.setRequestProperty("Content-Type", // "application/x-www-form-urlencoded"); // connection.setRequestProperty("Accept-Charset", "CP1251"); // connection.setRequestProperty("Content-Length", // "" + Integer.toString(urlParameters.getBytes().length)); // connection.setRequestProperty("Content-Language", "en-US"); connection.setUseCaches(false); connection.setDoInput(true); connection.setDoOutput(true); // Send request DataOutputStream wr = new DataOutputStream( connection.getOutputStream()); wr.writeBytes(urlParameters); wr.flush(); wr.close(); String headerName[] = new String[10]; int count = 0; for (int i = 1; (headerName[count] = connection.getHeaderFieldKey(i)) != null; i++) { if (headerName[count].equals("Set-Cookie")) { headerName[count++] = connection.getHeaderField(i); } } //I'm not sure if I have to close the connection here or not if (connection != null) { connection.disconnect(); } //the code above should be the login part //----------------------------------------- //this is copy-pasted from wireshark's info. String smsParam="from=men&" + "sender=0&" + "msisdn=359886737498&" + "tophone=0&" + "smstext=tova+e+proba%21+1.&" + "id=&" + "sendaction=&" + "direction=&" + "msgLen=84"; url = new URL("http://www.mtel.bg/moyat-profil-sms-tsentar_3004/" + "mm/smscenter/mc/sendsms/ma/index"); connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("POST"); connection.setRequestProperty("Cookie", headerName[0]); connection.setRequestProperty("Cookie", headerName[1]); //conn urlParameters = URLEncoder.encode(urlP, "CP1251"); connection.setUseCaches(false); connection.setDoInput(true); connection.setDoOutput(true); wr = new DataOutputStream( connection.getOutputStream()); wr.writeBytes(urlParameters); wr.flush(); wr.close(); //I'm not rly sure what exactly to do with this response. // Get Response InputStream is = connection.getInputStream(); BufferedReader rd = new BufferedReader(new InputStreamReader(is, "CP1251")); String line; StringBuffer response = new StringBuffer(); while ((line = rd.readLine()) != null) { response.append(line); response.append('\r'); } rd.close(); System.out.println(response.toString()); if (connection != null) { connection.disconnect(); } so that's my code so far. When I execute it ... I don't receive any text on my phone - so it clearly doesn't work as supposed to. I would appreciate any guidance or remarks. Is my cookie handling wrong? Is my login method wrong? Do I pass the right URLs. Do I encode and send the parameter string correctly? Is there any addition valuable data from these POSTs I should take? P.S. just in any case let me tell you that the username and password is not real. For security reasons I don't want to give valid ones. (I think this is appropriate approach) Here are the POST requests: POST /1/mm/auth/mc/auth/ma/index/mo/1 HTTP/1.1 Host: www.mtel.bg User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-alive Referer: http://www.mtel.bg/1/mm/smscenter/mc/sendsms/ma/index/mo/1 Cookie: __utma=209782857.541729286.1349267381.1349270269.1349274374.3; __utmc=209782857; __utmz=209782857.1349267381.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __atuvc=28%7C40; PHPSESSID=q0mage2usmv34slcv3dmd6t057; __utmb=209782857.3.10.1349274374 Content-Type: multipart/form-data; boundary=---------------------------151901450223722 Content-Length: 475 -----------------------------151901450223722 Content-Disposition: form-data; name="maccount" myRawUserName -----------------------------151901450223722 Content-Disposition: form-data; name="mpassword" myRawPassword -----------------------------151901450223722 Content-Disposition: form-data; name="redirect_https" http -----------------------------151901450223722 Content-Disposition: form-data; name="submit" ........ -----------------------------151901450223722-- HTTP/1.1 302 Found Server: nginx Date: Wed, 03 Oct 2012 14:26:40 GMT Content-Type: text/html; charset=Utf-8 Connection: close Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Location: /moyat-profil-sms-tsentar_3004/mm/smscenter/mc/sendsms/ma/index Content-Length: 0 The above text is vied with wireshark's follow tcp stream when pressing the log in button. POST /moyat-profil-sms-tsentar_3004/mm/smscenter/mc/sendsms/ma/index HTTP/1.1 *same as the above ones* Referer: http://www.mtel.bg/moyat-profil-sms-tsentar_3004/mm/smscenter/mc/sendsms/ma/index Cookie: __utma=209782857.541729286.1349267381.1349270269.1349274374.3; __utmc=209782857; __utmz=209782857.1349267381.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __atuvc=29%7C40; PHPSESSID=q0mage2usmv34slcv3dmd6t057; __utmb=209782857.4.10.1349274374 Content-Type: application/x-www-form-urlencoded Content-Length: 147 from=men&sender=0&msisdn=35988888888&tophone=0&smstext=this+is+some+FREE+SMS+text%21+100+char+per+sms+only%21&id=&sendaction=&direction=&msgLen=50 HTTP/1.1 302 Found Server: nginx Date: Wed, 03 Oct 2012 14:31:38 GMT Content-Type: text/html; charset=Utf-8 Connection: close Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Location: /moyat-profil-sms-tsentar_3004/mm/smscenter/mc/sendsms/ma/success/s/1 Content-Length: 0 The above text is when you press the send button.

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  • jquery to recognize and make hyper links

    - by user349223
    Anyone have a clue how I can use Jquery to find: http:// or www. and ends with .com, .org, .edu store that as a variable and wrap it in <a href="variable"> <a/> So I have a textarea and when people put in links, I would like to then make them into hyperlinks once they are posted. Make sense?

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  • Retrieving substring of a bound value

    - by shivesh
    I am binding some data to control, but want to limit the number of character of a specific field to a 30 first characters. I want to do it, if it's possible, on aspx page. I tried this: Text='<%# String.Format("{0}", Eval("Title")).Substring(0,30) %> ' But got this error: Index and length must refer to a location within the string. Parameter name: length

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  • 'Invalid conversion from some_type** to const some_type**'

    - by petersohn
    I've got a function that requires const some_type** as an argument (some_type is a struct, and the function needs a pointer to an array of this type). I declared a local variable of type some_type*, and initialized it. Then I call the function as f(&some_array), and the compiler (gcc) says: error: invalid conversion from ‘some_type**’ to ‘const some_type**’ What's the problem here? Why can't I convert a variable to const?

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  • How to find the real user home directory using python?

    - by nsharish
    I see that if we change the HOME(linux) or USERPROFILE(windows) environmental variable and run a python script, it returns the new value as the user home when I tried, os.environ['HOME'] os.exp Is there any way to find the real user home directory without relying on the environmental variable?. Thanx.

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  • How to execute unknown functions from dynamic load libraries?

    - by activenightly
    It's easy to load functions from dynamic libraries when you know this function in design time. just do something like this: int (*fn)(int); l0 = dlopen("./libfoo.so", RTLD_LAZY); if (!l0) { fprintf(stderr, "l0 %s\n", dlerror()); return 1; } fn = (int (*)(int))dlsym(l0, "foo"); if ((error = dlerror()) != NULL) { fprintf(stderr, "fn:%s\n", error); return 1; } x=(*fn)(y); ... How to execute library function when it's unknown in design time? In runtime you have a function name and array of arguments pointers and array of arguments sizes: char* fn_name="foo"; int foo_argc; void* foo_argv[]; int foo_argv_size[]; In scripting language it's a piece a cake task, but how to implement this nicely in c++?

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