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  • Changing the <input> type in IE with JavaScript

    - by MrEnder
    The line <input type="text" name="passwordLogin" value="Password" onfocus="if(this.value=='Password'){this.value=''; this.type='password'};" onblur="if(this.value==''){this.value='Password'; this.type='text'};" size="25" /> works in all web browsers except IE... How can I fix it for IE? Ok made some changes to still have an error I want it to work like this like here <input type="text" name="usernameLogin" value="Email" onfocus="if(this.value=='Email'){this.value=''};" onblur="if(this.value==''){this.value='Email'};" size="25" /> if I dont enter anything it will put the value back So I tried this <td colspan="2" id="passwordLoginTd"> <input id="passwordLoginInput1" type="text" name="passwordLogin" value="Password" onfocus="passwordFocus()" size="25" /> <input id="passwordLoginInput2" style="display: none;" type="password" name="passwordLogin" value="" onblur="passwordBlur()" size="25" /> </td> <script type="text/javascript"> //<![CDATA[ passwordElement1 = document.getElementById('passwordLoginInput1'); passwordElement2 = document.getElementById('passwordLoginInput2'); function passwordFocus() { passwordElement1.style.display = "none"; passwordElement2.style.display = "inline"; passwordElement2.focus(); } function passwordBlur() { if(passwordElement2.value=='') { passwordElement2.style.display = "none"; passwordElement1.style.display = "inline"; passwordElement1.focus(); } } //]]> </script> as you can see the blur does not work =[ ok finally got it thanks to the help needed to remove passwordElement1.focus();

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  • Setting minOccurs="0" (not required) on web service parameters of type int

    - by Alex Angas
    I have an ASP.NET 2.0 web method with the following signature: [WebMethod] public QueryResult[] GetListData( string url, string list, string query, int noOfItems, string titleField) I'm running the disco.exe tool to generate .wsdl and .disco files from this web service for use in SharePoint. The following WSDL for the parameters is being generated: <s:element minOccurs="0" maxOccurs="1" name="url" type="s:string" /> <s:element minOccurs="0" maxOccurs="1" name="list" type="s:string" /> <s:element minOccurs="0" maxOccurs="1" name="query" type="s:string" /> <s:element minOccurs="1" maxOccurs="1" name="noOfItems" type="s:int" /> <s:element minOccurs="0" maxOccurs="1" name="titleField" type="s:string" /> Why does the int parameter have minOccurs set to 1 instead of 0 and how do I change it? I've tried the following without success: [XmlElementAttribute(IsNullable=false)] in the parameter declaration: makes no difference (as expected when you think about it) [XmlElementAttribute(IsNullable=true)] in the parameter declaration: gives error "IsNullable may not be 'true' for value type System.Int32. Please consider using Nullable instead." changing the parameter type to int? : keeps minOccurs="1" and adds nillable="true" [XmlIgnore] in the parameter declaration: the parameter is never output to the WSDL at all

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  • Generics Java and Shadowing of type parameters

    - by rubixibuc
    This code seems to work fine class Rule<T> { public <T>Rule(T t) { } public <T> void Foo(T t) { } } Does the method type parameter shadow the class type parameter? Also when you create an object does it use the type parameter of the class? example Rule<String> r = new Rule<String>(); Does this normally apply to the type parameter of the class, in the situation where they do not conflict? I mean when only the class has a type parameter, not the constructor, or does this look for a type parameter in the constructor? If they do conflict how does this change? SEE DISCUSSION BELOW if I have a function call x = <Type Parameter>method(); // this is a syntax error even inside the function or class ; I must place a this before it, why is this, and does everything still hold true. Why don't I need to prefix anything for the constructor call. Shouldn't Oracle fix this.

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  • Managing user privileges, best practice.

    - by Loïc N.
    I'm am new to web development. I'm creating a website where different user can have different privileges, such as creating/editing/deleting a news, or adding/editing/deleting whatever kind of content on the website. I started by creating a "user type" that would indicate the user's privileges (such as "user", "newser", "moderator", "admin", and so on), but i quickly started noticing issues that made me think that this might be a naive approach to this issue. What if i want to give a regular user the right to edit a news (for whatever reason)? Then the user would be half "user", half "newser". But the system i use can only handle one user-type. So what would be the best practice here? I was thinking of removing the concept of roles (or "user-types" such as newser) and only have the concept of "privilege", where every user could have zero to many privileges. So, to re-use the above example, if i wanted a user to have the right to edit some news, i would only have to give him a "edit news" privilege. Is this the way to go?

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  • Managing user privileges, best practices [on hold]

    - by Loïc N.
    I'm am new to web development. I'm creating a website where different user can have different privileges, such as creating/editing/deleting a news, or adding/editing/deleting whatever kind of content on the website. I started by creating a "user type" that would indicate the user's privileges (such as "user", "newser", "moderator", "admin", and so on), but I quickly started noticing issues that made me think that this might be a naive approach to this issue. What if I want to give a regular user the right to edit a news (for whatever reason)? Then the user would be half "user", half "newser". But the system I use can only handle one user-type. So what would be the best practice here? I was thinking of removing the concept of roles (or "user-types" such as newser) and only have the concept of "privilege", where every user could have zero to many privileges. So, to re-use the above example, if I wanted a user to have the right to edit some news, I would only have to give him a "edit news" privilege. Is this the way to go?

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  • php - Can I integrate functions with same content, different names?

    - by Gal
    I have a couple of functions inside a class that essentially do the same thing: public function fn_a(){ return __FUNCTION__; } public function fn_b(){ return __FUNCTION__; } public function fn_c(){ return __FUNCTION__; } I need those functions to remain in their current names so I intentionally did not do: public function fn_($letter){ return __FUNCTION__.$letter; } I was hoping for some sort of way to minify the verboseness of code here, since they all do the same. The ultimate situation would be something like this: public functions fn_a, fn_b, fn_c() { return __FUNCTION__; } Another solution, if applicable, might be doing something like Class's "extends": fn_b, fn_c extend fn_a? What do you think guys?

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  • how can I deliver remote content via web service?

    - by Slinky
    We have multiple websites under different domains that need to receive our banner ads. We have a server app, in PHP, that returns the HTML for a randomly-generated banner ad. Out of concern for the client side, I don't want to use an iframe nor do I want to include the jquery library because of the weight - I also do not want to duplicate code across all the domains. Any other way to do this? Maybe there is a way to do this with mod rewrite or a web service? Anyone solve a similar problem? Thanks

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  • Drupal views pane content not visible

    - by jwandborg
    I have a pane on my front page with one content pane and two views panes. I can't see the content of the third view ($pane->pid = "new-3" / comment: # Senaste bilder). Here's my panel <?php $page = new stdClass; $page->disabled = FALSE; /* Edit this to true to make a default page disabled initially */ $page->api_version = 1; $page->name = 'frontpage'; $page->task = 'page'; $page->admin_title = 'Startsida'; $page->admin_description = ''; $page->path = 'hem'; $page->access = array(); $page->menu = array(); $page->arguments = array(); $page->conf = array(); $page->default_handlers = array(); $handler = new stdClass; $handler->disabled = FALSE; /* Edit this to true to make a default handler disabled initially */ $handler->api_version = 1; $handler->name = 'page_frontpage_panel_context'; $handler->task = 'page'; $handler->subtask = 'frontpage'; $handler->handler = 'panel_context'; $handler->weight = 0; $handler->conf = array( 'title' => 'Panel', 'no_blocks' => FALSE, 'css_id' => '', 'css' => '', 'contexts' => array(), 'relationships' => array(), ); $display = new panels_display; $display->layout = 'onecol'; $display->layout_settings = array(); $display->panel_settings = array(); $display->cache = array(); $display->title = ''; $display->content = array(); $display->panels = array(); # Bild $pane = new stdClass; $pane->pid = 'new-1'; $pane->panel = 'middle'; $pane->type = 'custom'; $pane->subtype = 'custom'; $pane->shown = TRUE; $pane->access = array(); $pane->configuration = array( 'admin_title' => '', 'title' => '', 'body' => '<img src="/sites/all/themes/zen/ils-2010/img/graphics-start-text-v3.png" alt="Hej! Vi vet att du och dina klasskompisar har mycket att tänka på under er sista termin i gymnasiet. Därför har vi samlat några saker som vi tror kommer göra er studenttid lite roligare och lite enklare. Välkommen!" />', 'format' => '2', 'substitute' => TRUE, ); $pane->cache = array(); $pane->style = array(); $pane->css = array(); $pane->extras = array(); $pane->position = 0; $display->content['new-1'] = $pane; $display->panels['middle'][0] = 'new-1'; # Topplista $pane = new stdClass; $pane->pid = 'new-2'; $pane->panel = 'middle'; $pane->type = 'views_panes'; $pane->subtype = 'topplista_terms-panel_pane_1'; $pane->shown = TRUE; $pane->access = array(); $pane->configuration = array( 'link_to_view' => 1, 'more_link' => 0, 'use_pager' => 0, 'pager_id' => '', 'items_per_page' => '10', 'offset' => '0', 'path' => 'flaktavling/topplista/klasser', 'override_title' => 0, 'override_title_text' => '', ); $pane->cache = array(); $pane->style = array(); $pane->css = array(); $pane->extras = array(); $pane->position = 1; $display->content['new-2'] = $pane; $display->panels['middle'][1] = 'new-2'; # Senaste bilder $pane = new stdClass; $pane->pid = 'new-3'; $pane->panel = 'middle'; $pane->type = 'views_panes'; $pane->subtype = 'senaste_bilderna-panel_pane_1'; $pane->shown = TRUE; $pane->access = array(); $pane->configuration = array( 'link_to_view' => 0, 'more_link' => 0, 'use_pager' => 0, 'pager_id' => '', 'items_per_page' => '2', 'offset' => '0', 'path' => 'galleri/senaste-bilder', 'override_title' => 0, 'override_title_text' => '', ); $pane->cache = array(); $pane->style = array(); $pane->css = array( 'css_id' => 'pane-senaste-bilderna', 'css_class' => '', ); $pane->extras = array(); $pane->position = 2; $display->content['new-3'] = $pane; $display->panels['middle'][2] = 'new-3'; $display->hide_title = PANELS_TITLE_FIXED; $display->title_pane = 'new-1'; $handler->conf['display'] = $display; $page->default_handlers[$handler->name] = $handler; Here´s the view senaste_bilderna <?php $view = new view; $view->name = 'senaste_bilderna'; $view->description = ''; $view->tag = ''; $view->view_php = ''; $view->base_table = 'node'; $view->is_cacheable = FALSE; $view->api_version = 2; $view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */ $handler = $view->new_display('default', 'Förvalt', 'default'); $handler->override_option('fields', array( 'field_picture_fid' => array( 'id' => 'field_picture_fid', 'table' => 'node_data_field_picture', 'field' => 'field_picture_fid', ), )); $handler->override_option('sorts', array( 'created' => array( 'order' => 'DESC', 'granularity' => 'second', 'id' => 'created', 'table' => 'node', 'field' => 'created', 'relationship' => 'none', ), )); $handler->override_option('filters', array( 'type' => array( 'operator' => 'in', 'value' => array( 'ils_picture' => 'ils_picture', ), 'group' => '0', 'exposed' => FALSE, 'expose' => array( 'operator' => FALSE, 'label' => '', ), 'id' => 'type', 'table' => 'node', 'field' => 'type', 'override' => array( 'button' => 'Åsidosätt', ), 'relationship' => 'none', ), )); $handler->override_option('access', array( 'type' => 'none', )); $handler->override_option('cache', array( 'type' => 'none', )); $handler->override_option('title', 'Senaste bilderna från galleriet'); $handler->override_option('items_per_page', 2); $handler->override_option('row_options', array( 'inline' => array( 'field_picture_fid' => 'field_picture_fid', ), 'separator' => '', 'hide_empty' => 0, )); $handler = $view->new_display('panel_pane', 'Content pane', 'panel_pane_1'); $handler->override_option('pane_title', ''); $handler->override_option('pane_description', ''); $handler->override_option('pane_category', array( 'name' => 'View panes', 'weight' => 0, )); $handler->override_option('allow', array( 'use_pager' => FALSE, 'items_per_page' => FALSE, 'offset' => FALSE, 'link_to_view' => FALSE, 'more_link' => FALSE, 'path_override' => FALSE, 'title_override' => FALSE, 'exposed_form' => FALSE, )); $handler->override_option('argument_input', array()); $handler->override_option('link_to_view', 0); $handler->override_option('inherit_panels_path', 0); $handler = $view->new_display('page', 'Sida', 'page_1'); $handler->override_option('path', 'galleri/senaste-bilderna'); $handler->override_option('menu', array( 'type' => 'none', 'title' => '', 'description' => '', 'weight' => 0, 'name' => 'navigation', )); $handler->override_option('tab_options', array( 'type' => 'none', 'title' => '', 'description' => '', 'weight' => 0, )); I have edited one views template, here's the code in the file views-view-fields--senaste-bilderna.tpl.php <?php // $Id: views-view-fields.tpl.php,v 1.6 2008/09/24 22:48:21 merlinofchaos Exp $ /** * @file views-view-fields.tpl.php * Default simple view template to all the fields as a row. * * - $view: The view in use. * - $fields: an array of $field objects. Each one contains: * - $field->content: The output of the field. * - $field->raw: The raw data for the field, if it exists. This is NOT output safe. * - $field->class: The safe class id to use. * - $field->handler: The Views field handler object controlling this field. Do not use * var_export to dump this object, as it can't handle the recursion. * - $field->inline: Whether or not the field should be inline. * - $field->inline_html: either div or span based on the above flag. * - $field->separator: an optional separator that may appear before a field. * - $row: The raw result object from the query, with all data it fetched. * * @ingroup views_templates */ ?> <?php foreach ($fields as $id => $field): ?> <?php $result = db_query('SELECT * FROM {files} WHERE fid = ' . $row->node_data_field_picture_field_picture_fid ); ?> <?php $data = db_fetch_object( $result ); ?> <div id="senaste-bilderna-first"><img src="<?= imagecache_create_url('senaste_bilderna_thumbnail', $data->filepath) ?>" alt="" /></div> <?php /* if (!empty($field->separator)): <?php print $field->separator; <?php endif; <<?php print $field->inline_html; class="views-field-<?php print $field->class; "> <?php if ($field->label): <label class="views-label-<?php print $field->class; "> <?php print $field->label; : </label> <?php endif; <?php // $field->element_type is either SPAN or DIV depending upon whether or not // the field is a 'block' element type or 'inline' element type. <<?php print $field->element_type; class="field-content"><?php print $field->content; </<?php print $field->element_type; > </<?php print $field->inline_html;> <?php*/ endforeach; ?> This is the result <div class="panel-separator"> </div> <div class="panel-pane pane-views-panes pane-senaste-bilderna-panel-pane-1" id="pane-senaste-bilderna"> <h2 class="pane-title">Senaste bilderna från galleriet </h2> <div class="pane-content"> <div class="view view-senaste-bilderna view-id-senaste_bilderna view-display-id-panel_pane_1 view-dom-id-2"> <div class="view-content"> <div class="views-row views-row-1 views-row-odd views-row-first"> </div> <div class="views-row views-row-2 views-row-even views-row-last"> </div> </div> </div> </div> </div> My Drupal version is 6.16

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  • SQL SERVER – Wait Stats – Wait Types – Wait Queues – Day 0 of 28

    - by pinaldave
    This blog post will have running account of the all the blog post I will be doing in this month related to SQL Server Wait Types and Wait Queues. SQL SERVER – Introduction to Wait Stats and Wait Types – Wait Type – Day 1 of 28 SQL SERVER – Signal Wait Time Introduction with Simple Example – Wait Type – Day 2 of 28 SQL SERVER – DMV – sys.dm_os_wait_stats Explanation – Wait Type – Day 3 of 28 SQL SERVER – DMV – sys.dm_os_waiting_tasks and sys.dm_exec_requests – Wait Type – Day 4 of 28 SQL SERVER – Capturing Wait Types and Wait Stats Information at Interval – Wait Type – Day 5 of 28 SQL SERVER – CXPACKET – Parallelism – Usual Solution – Wait Type – Day 6 of 28 SQL SERVER – CXPACKET – Parallelism – Advanced Solution – Wait Type – Day 7 of 28 SQL SERVER – SOS_SCHEDULER_YIELD – Wait Type – Day 8 of 28 SQL SERVER – PAGEIOLATCH_DT, PAGEIOLATCH_EX, PAGEIOLATCH_KP, PAGEIOLATCH_SH, PAGEIOLATCH_UP – Wait Type – Day 9 of 28 SQL SERVER – IO_COMPLETION – Wait Type – Day 10 of 28 SQL SERVER – ASYNC_IO_COMPLETION – Wait Type – Day 11 of 28 SQL SERVER – PAGELATCH_DT, PAGELATCH_EX, PAGELATCH_KP, PAGELATCH_SH, PAGELATCH_UP – Wait Type – Day 12 of 28 SQL SERVER – FT_IFTS_SCHEDULER_IDLE_WAIT – Full Text – Wait Type – Day 13 of 28 SQL SERVER – BACKUPIO, BACKUPBUFFER – Wait Type – Day 14 of 28 SQL SERVER – LCK_M_XXX – Wait Type – Day 15 of 28 Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Optimization, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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  • Confusion for mime files: magic, magic.mgc, magic.mime

    - by Florence Foo
    I'm using Ubuntu. I'm trying to use ruby gem 'shared-mime-info' for an application I'm writing. I understand that magic.mgc is a compiled version of magic file which has magic number definitions for the different file types. BUT I don't understand why is it /usr/share/mime/magic is in binary format instead of just normal text file with each parameters separated by white space like everywhere else I'm finding on the internet when it's referencing this file? The /usr/share/mime/magic has the word 'MIME-Magic' at the beginning of the file and prioritize the rest of the stuff like. So it doesn't look like magic.mgc at all. [100:application/vnd.scribus] >1=^@^KSCRIBUSUTF8 [90:application/vnd.stardivision.writer] >2089=^@ shared-mime-info seems to want a magic file in the binary non compiled format as above and I wanted to add definition for DOCX but how does one update or generate this file without using a hex editor? There is a reference to the magic file I found at: http://standards.freedesktop.org/shared-mime-info-spec/shared-mime-info-spec-latest.html And it mention this file is updated with update-mime-database but what if I just want to add some new entry to it. hex editor? Anyway I ended up using hexer to make a new magic file in ~/.local/share/mime/ with only the entry I wanted to add and the MIME-Magic header. Seems to work (assuming I will ever deal with docx for now). 00000000: 4d 49 4d 45 2d 4d 61 67 69 63 00 0a 5b 36 30 3a MIME-Magic..[60: 00000010: 61 70 70 6c 69 63 61 74 69 6f 6e 2f 76 6e 64 2e application/vnd. 00000020: 6f 70 65 6e 78 6d 6c 66 6f 72 6d 61 74 73 2d 6f openxmlformats-o 00000030: 66 66 69 63 65 64 6f 63 75 6d 65 6e 74 2e 77 6f fficedocument.wo 00000040: 72 64 70 72 6f 63 65 73 73 69 6e 67 6d 6c 2e 64 rdprocessingml.d 00000050: 6f 63 75 6d 65 6e 74 5d 0a 3e 30 3d 00 08 50 4b ocument].>0=..PK 00000060: 03 04 14 00 06 00 0a -- -- -- -- -- -- -- -- -- .......---------

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  • C# 4.0: Covariance And Contravariance In Generics

    - by Paulo Morgado
    C# 4.0 (and .NET 4.0) introduced covariance and contravariance to generic interfaces and delegates. But what is this variance thing? According to Wikipedia, in multilinear algebra and tensor analysis, covariance and contravariance describe how the quantitative description of certain geometrical or physical entities changes when passing from one coordinate system to another.(*) But what does this have to do with C# or .NET? In type theory, a the type T is greater (>) than type S if S is a subtype (derives from) T, which means that there is a quantitative description for types in a type hierarchy. So, how does covariance and contravariance apply to C# (and .NET) generic types? In C# (and .NET), variance applies to generic type parameters and not to the resulting generic type. A generic type parameter is: covariant if the ordering of the generic types follows the ordering of the generic type parameters: Generic<T> = Generic<S> for T = S. contravariant if the ordering of the generic types is reversed from the ordering of the generic type parameters: Generic<T> = Generic<S> for T = S. invariant if neither of the above apply. If this definition is applied to arrays, we can see that arrays have always been covariant because this is valid code: object[] objectArray = new string[] { "string 1", "string 2" }; objectArray[0] = "string 3"; objectArray[1] = new object(); However, when we try to run this code, the second assignment will throw an ArrayTypeMismatchException. Although the compiler was fooled into thinking this was valid code because an object is being assigned to an element of an array of object, at run time, there is always a type check to guarantee that the runtime type of the definition of the elements of the array is greater or equal to the instance being assigned to the element. In the above example, because the runtime type of the array is array of string, the first assignment of array elements is valid because string = string and the second is invalid because string = object. This leads to the conclusion that, although arrays have always been covariant, they are not safely covariant – code that compiles is not guaranteed to run without errors. In C#, the way to define that a generic type parameter as covariant is using the out generic modifier: public interface IEnumerable<out T> { IEnumerator<T> GetEnumerator(); } public interface IEnumerator<out T> { T Current { get; } bool MoveNext(); } Notice the convenient use the pre-existing out keyword. Besides the benefit of not having to remember a new hypothetic covariant keyword, out is easier to remember because it defines that the generic type parameter can only appear in output positions — read-only properties and method return values. In a similar way, the way to define a type parameter as contravariant is using the in generic modifier: public interface IComparer<in T> { int Compare(T x, T y); } Once again, the use of the pre-existing in keyword makes it easier to remember that the generic type parameter can only be used in input positions — write-only properties and method non ref and non out parameters. Because covariance and contravariance apply only to the generic type parameters, a generic type definition can have both covariant and contravariant generic type parameters in its definition: public delegate TResult Func<in T, out TResult>(T arg); A generic type parameter that is not marked covariant (out) or contravariant (in) is invariant. All the types in the .NET Framework where variance could be applied to its generic type parameters have been modified to take advantage of this new feature. In summary, the rules for variance in C# (and .NET) are: Variance in type parameters are restricted to generic interface and generic delegate types. A generic interface or generic delegate type can have both covariant and contravariant type parameters. Variance applies only to reference types; if you specify a value type for a variant type parameter, that type parameter is invariant for the resulting constructed type. Variance does not apply to delegate combination. That is, given two delegates of types Action<Derived> and Action<Base>, you cannot combine the second delegate with the first although the result would be type safe. Variance allows the second delegate to be assigned to a variable of type Action<Derived>, but delegates can combine only if their types match exactly. If you want to learn more about variance in C# (and .NET), you can always read: Covariance and Contravariance in Generics — MSDN Library Exact rules for variance validity — Eric Lippert Events get a little overhaul in C# 4, Afterward: Effective Events — Chris Burrows Note: Because variance is a feature of .NET 4.0 and not only of C# 4.0, all this also applies to Visual Basic 10.

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  • Mission critical embedded language

    - by Moe
    Maybe the question sounds a bit strange, so i'll explain a the background a little bit. Currently i'm working on a project at y university, which will be a complete on-board software for an satellite. The system is programmed in c++ on top of a real-time operating system. However, some subsystems like the attitude control system and the fault detection and a space simulation are currently only implemented in Matlab/Simulink, to prototype the algorithms efficiently. After their verification, they will be translated into c++. The complete on-board software grew very complex, and only a handful people know the whole system. Furthermore, many of the students haven't program in c++ yet and the manual memory management of c++ makes it even more difficult to write mission critical software. Of course the main system has to be implemented in c++, but i asked myself if it's maybe possible to use an embedded language to implement the subsystem which are currently written in Matlab. This embedded language should feature: static/strong typing and compiler checks to minimize runtime errors small memory usage, and relative fast runtime attitude control algorithms are mainly numerical computations, so a good numeric support would be nice maybe some sort of functional programming feature, matlab/simulink encourage you to use it too I googled a bit, but only found Lua. It looks nice, but i would not use it in mission critical software. Have you ever encountered a situation like this, or do you know any language, which could satisfies the conditions? EDIT: To clarify some things: embedded means it should be able to embed the language into the existing c++ environment. So no compiled languages like Ada or Haskell ;)

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  • Question about casting a class in Java with generics

    - by Florian F
    In Java 6 Class<? extends ArrayList<?>> a = ArrayList.class; gives and error, but Class<? extends ArrayList<?>> b = (Class<? extends ArrayList<?>>)ArrayList.class; gives a warning. Why is (a) an error? What is it, that Java needs to do in the assignment, if not the cast shown in (b)? And why isn't ArrayList compatible with ArrayList? I know one is "raw" and the other is "generic", but what is it you can do with an ArrayList and not with an ArrayList, or the other way around?

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  • Matrix Pattern Recognition Algorithm

    - by Andres
    I am designing a logic analyzer and I would like to implement some Matrix Algorithm. I have several channels each one represented by a row in the matrix and every element in the column would be the state, for example: Channel 1 1 0 0 1 0 1 1 0 1 Channel 2 1 1 0 1 1 0 0 1 1 Channel 3 0 1 0 1 1 0 1 0 0 Channel 4 0 0 1 0 0 1 0 0 1 I would like to detect a pattern inside my matrix for example, detect if exist and where the sub-matrix or pattern: 1 0 1 1 I think it can be accomplished testing element by element but I think there should be a better way of doing it. Is there any Java API or any way to do it ? If there is a API ARM optimized for NEON instructions would be great also but not mandatory. Thank you very much in advance.

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  • Firefox application associations not working

    - by Pavlos G.
    No matter what changes i make to file associations (actions) in the 'Applications' tab in firefox, they're totally ignored. For example, i set .wmv and .avi files to open with 'smplayer' but when i download a file and double-click on it (through the 'Downloads' window), it keeps opening with Totem player. I've tried to delete and recreate mimetypes.rdf but that didn't help. Any ideas on what else should i check?

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  • When should a method of a class return the same instance after modifying itself?

    - by modiX
    I have a class that has three methods A(), B() and C(). Those methods modify the own instance. While the methods have to return an instance when the instance is a separate copy (just as Clone()), I got a free choice to return void or the same instance (return this;) when modifying the same instance in the method and not returning any other value. When deciding for returning the same modified instance, I can do neat method chains like obj.A().B().C();. Would this be the only reason for doing so? Is it even okay to modify the own instance and return it, too? Or should it only return a copy and leave the original object as before? Because when returning the same modified instance the user would maybe admit the returned value is a copy, otherwise it would not be returned? If it's okay, what's the best way to clarify such things on the method?

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  • C# return variables

    - by pb01
    In a debate regarding return variables, some members of the team prefer a method to return the result directly to the caller, whereas others prefer to declare a return variable that is then returned to the caller (see code examples below) The argument for the latter is that it allows a developer that is debugging the code to find the return value of the method before it returns to the caller thereby making the code easier to understand: This is especially true where method calls are daisy-chained. Are there any guidelines as to which is the most efficient and/or are there any other reasons why we should adopt one style over another? Thanks private bool Is2(int a) { return a == 2; } private bool Is3(int a) { var result = a == 3; return result; }

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  • WebCenter Customer Spotlight: Ancestry.com

    - by me
    Author: Peter Reiser - Social Business Evangelist, Oracle WebCenter  Solution SummaryAncestry.com Inc is the largest for-profit genealogy company in the world and it operates a network of genealogical and historical record websites focused on the U.S. and nine foreign countries, develops and markets genealogical software, and offers a wide array of genealogical related services. As of June 2012, the company provided access to more than 10 billion records, 38 million family trees, and 2 million paying subscribers. Their main business challenges were to improve time to market and agility to respond quickly to fast changing Internet waves while integrating with their existing content (4 PetaByte) and legacy systems. Ancestry.com implemented Oracle WebCenter Sites as their Web Experience Management System for their landing pages and marketing micro sites, added dynamic sections to their existing websites and integrated the existing content and legacy systems through web services. The Ancestry.com landing pages and marketing sites are now managed by the business team without any involvement of engineering resources. Managed content can quickly be added to existing pages without having to refactor the whole page and existing content (4 PetaBytes)  is now served trough Oracle WebCenter Sites without having to migrate from existing systems. Company OverviewAncestry.com Inc is a publicly traded Internet company (NASDAQ: ACOM) based in Provo, Utah, USA. The largest for-profit genealogy company in the world, it operates a network of genealogical and historical record websites focused on the U.S. and nine foreign countries, develops and markets genealogical software, and offers a wide array of genealogical related services. As of June 2012, the company provided access to more than 10 billion records, 38 million family trees, and 2 million paying subscribers. Business ChallengesAncestry main business challenge was to respond quickly to fast changing Internet waves.  Product marketing could not change Web site content without going through development. They needed dedicated developers just to support their marketing efforts. Technical Requirements Support current systems and environments - ASP.NET, MVC.NET, Java, JSP, PHP Scalable and manageable for a world wide network Marketing Requirements Easy to enter content – Without having a degree in HTML Scheduling of content – When is content visible to users Product Requirements Easy to manage content – See when content is out-of-date Rotation of content – Producing new content as old content expires Solution DeployedAncestry implemented  Oracle WebCenter Sites as their Web Experience Management System to manage their landing pages and marketing micro sites. This sites are fully managed by their business team without involvement of any engineering resources. The integration with their existing Web sites is done through Spot Management which allows the ability to add dynamic content to certain sections of a web page. The dynamic content is managed by  Oracle WebCenter Sites. The integration with the existing content (4 PetaBytes!) is done trough  a custom content provider interface which allows to mix existing content with content from  Oracle WebCenter Sites. Business ResultsAncestry.com has achieved following impressive business results: Landing pages and marketing sites are now managed by the business team without any involvement of engineering resources Managed content can quickly be added to existing pages without having to refactor the whole page Provide access to existing content (4 PetaBytes)  without having to migrate from existing systems Additional Information Ancestry Webcast Oracle WebCenter Sites

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  • Optimization ended up in casting an object at each method call

    - by Aybe
    I've been doing some optimization for the following piece of code : public void DrawLine(int x1, int y1, int x2, int y2, int color) { _bitmap.DrawLineBresenham(x1, y1, x2, y2, color); } After profiling it about 70% of the time spent was in getting a context for drawing and disposing it. I ended up sketching the following overload : public void DrawLine(int x1, int y1, int x2, int y2, int color, BitmapContext bitmapContext) { _bitmap.DrawLineBresenham(x1, y1, x2, y2, color, bitmapContext); } Until here no problems, all the user has to do is to pass a context and performance is really great as a context is created/disposed one time only (previously it was a thousand times per second). The next step was to make it generic in the sense it doesn't depend on a particular framework for rendering (besides .NET obvisouly). So I wrote this method : public void DrawLine(int x1, int y1, int x2, int y2, int color, IDisposable bitmapContext) { _bitmap.DrawLineBresenham(x1, y1, x2, y2, color, (BitmapContext)bitmapContext); } Now every time a line is drawn the generic context is casted, this was unexpected for me. Are there any approaches for fixing this design issue ? Note : _bitmap is a WriteableBitmap from WPF BitmapContext is from WriteableBitmapEx library DrawLineBresenham is an extension method from WriteableBitmapEx

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  • Web browser downloads only open target folders - cannot open files

    - by Pavlos G.
    After installing xubuntu packages in order to check xfce, I reverted back to gnome2. During the first login, I noticed that thunar was now selected as the default file manager. Preferred applications menu is also missing now, so I could not set nautilus as the default. I removed all the xubuntu packages (including thunar) and then when I tried to open a folder, I was asked to select the default file manager - that's how I got nautilus back. The next problem I'm now facing has to do with the downloaded files from web browsers: Open and Open containing folder options produce exactly the same result. If I double-click on a file, it'll just open the containing folder, instead of opening the file with it's associated application (e.g. libreoffice writer for .doc,.odt, smplayer for .avi,.wmv, etc). The problem happens both in Firefox and Chrome. Through nautilus, all files open correctly. Up until now I've tried the following: Delete/recreate mimeTypes.rdf in my FF profile Create a new profile in FF Delete/recreate ~/.local/share/applications/mimeapps.list Already checked this similar article None of them worked. Any ideas on the issue would be appreciated.

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  • Loose typing not applied to objects

    - by TecBrat
    I have very little experience working with classes and object. I work in a loosely typed language, PHP. I was working with a SimpleXML object and ran into a problem where I was trying to do math with an element of that object like $results->ProductDetail->{'Net'.$i}; If I echoed that value, I'd get 0.53 but when I tried to do math with it, it was converted to 0 Is there a reason that a loosely typed language would not recognize that as a float and handle it as such? Why would "echo" handle it as a string but the math fail to convert it? Example: $xml='<?xml version="1.0" encoding="UTF-8" ?>'; $xml.='<Test> <Item> <Price>0.53</Price> </Item> </Test>'; $result=simplexml_load_string($xml); var_dump($result->Item->Price); echo '<br>'; echo $result->Item->Price; echo '<br>'; echo 1+$result->Item->Price; echo '<br>'; echo 1+(float)$result->Item->Price; Output: object(SimpleXMLElement)#4 (1) { [0]=> string(4) "0.53" } 0.53 1 1.53

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  • Can I use a 302 redirect to serve up static content from a url with escaped_fragment?

    - by Starfs
    We would like to serve up seo-friendly ajax-driven content. We are following this documentation. Has anyone ever tried to write a 302 redirect into the htaccess file, that takes the '?_escaped_fragment=' string and send that to a static page? For example /snapshot/yourfilename/ How will Google react to this? I've gone through the documentation and it's not very clear. The below quote is from Google's documentation this is what I find. I'm not sure if they are saying that you can redirect the _escaped_fragment_ url to a different static page, or if this is to redirect the hashtag URL to static content? Thoughts? From Google's site: Question: Can I use redirects to point the crawler at my static content? Redirects are okay to use, as long as they eventually get you to a page that's equivalent to what the user would see on the #! version of the page. This may be more convenient for some webmasters than serving up the content directly. If you choose this approach, please keep the following in mind: Compared to serving the content directly, using redirects will result in extra traffic because the crawler has to follow redirects to get the content. This will result in a somewhat higher number of fetches/second in crawl activity. Note that if you use a permanent (301) redirect, the url shown in our search results will typically be the target of the redirect, whereas if a temporary (302) redirect is used, we'll typically show the #! url in search results. Depending on how your site is set up, showing #! may produce a better user experience, because the user will be taken straight into the AJAX experience from the Google search results page. Clicking on a static page will take them to the static content, and they may experience avoidable extra page load time if the site later wants to switch them to the AJAX experience.

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  • Dynamically vs Statically typed languages studies

    - by Winston Ewert
    Do there exist studies done on the effectiveness of statically vs dynamically typed languages? In particular: Measurements of programmer productivity Defect Rate Also including the effects of whether or not unit testing is employed. I've seen lots of discussion of the merits of either side but I'm wondering whether anyone has done a study on it. Edit Sadly, only one of the papers shown is actually a study and it does nothing but conclude that the language matters. This leads me to ponder: what if I proposed doing such a study with volunteers from this site?

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