Tutorial by Examples: c

var syntaxRoot = await document.GetSyntaxRootAsync(); var semanticModel = await document.GetSemanticModelAsync(); var sampleMethodInvocation = syntaxRoot .DescendantNodes() .OfType<InvocationExpressionSyntax>() .First(); var sampleMethodSymbol = semanticModel.GetSymbolI...

As this documentation explains, Sometimes a resource file will need to contain a value that can only be supplied at build time. To accomplish this in Maven, put a reference to the property that will contain the value into your resource file using the syntax ${<property name>}. The property ...

Standard usage in Activity: Context context = getApplicationContext(); Standard usage in Fragment: Context context = getActivity().getApplicationContext(); this (when in a class that extends from Context, such as the Application, Activity, Service and IntentService classes) TextView textVi...

Simple example from http://search.cpan.org/dist/sapnwrfc/sapnwrfc-cookbook.pod use strict; use warnings; use utf8; use sapnwrfc; SAPNW::Rfc->load_config('sap.yml'); my $conn = SAPNW::Rfc->rfc_connect; my $rd = $conn->function_lookup("RPY_PROGRAM_READ"); my $rc = $rd-&g...

Design Patterns provide solutions to the commonly occurring problems in software design. The design patterns were first introduced by GoF(Gang of Four) where they described the common patterns as problems which occur over and over again and solutions to those problems. Design patterns have four ess...

package main import ( "fmt" "time" ) func say(s string) { for i := 0; i < 5; i++ { time.Sleep(100 * time.Millisecond) fmt.Println(s) } } func main() { go say("world") say("hello") } A goroutine ...

This exemple shows how you can pass several types in function parameters : static void print_value (Value val) { print ("value-type : %s\n", val.type().name()); print ("value-content : %s\n\n", val.strdup_contents()); } public static void main (string[] args) { ...

The GLib.Task provide low-level API for performing asynchronous operations. var task = new GLib.Task (null, null, (obj, result) => { try { var ret = result.propagate_boolean (); } catch (Error err) { // handler err... } }); Later in a thread or a callback: t...

it caused by your batch size too small, which lead to a lot of ROS Containers created and reach the limitation(1024 default). you should do defragment using TupleMover task(mergeout) before the error raised. To do troubleshooting: ROS Containers viewed from the projections. select * from STOR...

it often happened some rows with format issue, data type issue rejected by copy command while try load it by copy command. the query return succeed but some of data rejected. To do troubleshooting save Rejected Data and Exceptions COPY large_tbl FROM :file1 ON site01, :file2 O...

It's necessary to declare the type; here t_my_list; a collection is a TABLE OF something CREATE OR REPLACE TYPE t_my_list AS TABLE OF VARCHAR2(100); Here's the function. Notice the () used as a kind of constructor, and the COUNT and EXTEND keywords that help you create and grow your collection; ...

Before deploying the angular project in server we need to build angular project for production. We also need to change the routing path in index.html file from <base href=”/”> to <base href=”./”> if it is not done then your project wouldn’t get loaded properly there will be some routing ...

ng build –prod Above given command with extra option like –prod would generate the production build project bundle. Once the above command gets executed in the root directory of your project would appear a directory called dist. In which all the production build bundle of your project appears in ...

Once the dist directory is ready with your production built bundles. Just open the dist directory and open the command prompt type the following command to create the war file to deploy your project on apache tomcat server. jar cvf dist.war . Once the above jar commands gets executed. It wou...

Cut/Copy the dist.war file from dist directory and place it in apache tomcat webapp directory. Go to apache tomcat bin folder and double click on startup.bat file. Now tomcat server will execute dist.war file and startup the tomcat catalina server. Once the tomcat catalina server gets started o...

interface IArrayWrapper { public function getProperties(): array; public function has(string $name): bool; public function __toString(); // ... }; /** * Lightweight in-place data wrapper. * Demonstrates usage of anonymous class in conjunction with interface. * * Pro...

If you look at the bin directory in your virtualenv, you’ll see easy_install which has been modified to put eggs and packages in the virtualenv’s site-packages directory. To install an app in your virtual environment: $ source test_project/bin/activate $ pip install flask At this time, you do...

lsvirtualenv : List all of the environments. cdvirtualenv : Navigate into the directory of the currently activated virtual environment, so you can browse its site-packages, for example. cdsitepackages : Like the above, but directly into site-packages directory. lssitepackages : Shows contents of ...

The window.postMessage() method together with its relative event handler window.onmessage can be safely used to enable cross-origin communication. The postMessage() method of the target window can be called to send a message to another window, which will be able to intercept it with its onmessage e...

&& has precedence over ||, this means that parentheses are placed to evaluate what would be evaluated together. c++ uses short-circuit evaluation in && and || to not do unnecessary executions. If the left hand side of || returns true the right hand side does not need to be evaluate...