Tutorial by Examples: er

The VisibleExp property is a boolean expression, that determines if given tab is visible (when logical expression is TRUE) or hidden. You specify VisibleExp property for PXTab controls in Aspx page: <px:PXTabItem Text="Credit Card Processing Info" BindingContext="form" ...
Unlike the VisibleExp property, defined in Aspx, you manipulate AllowSelect property of a data view though BLC or BLC extension code. The AllowSelect property makes it possible to use more complex boolean expressions (in comparison to the VisibleExp property) and, if necessary, retrieve additional i...
Several commands allow you to work with Strings representing integer values. A user can set the integer value of a key using the command: SET intkey 2 The set command will create the key if necessary or update it if it already exists. The value of an integer key can be updated on the server us...
Note: manifest (in DllReferencePlugin) should reference path (defined in DllPlugin) const webpack = require('webpack'); const path = require('path'); const isDevelopment = process.env.NODE_ENV !== 'production'; const ExtractTextPlugin = require('extract-text-webpack-plugin'); const extractCSS...
using Microsoft.AspNetCore.Http; using System; using System.Diagnostics; using System.IO; using System.Linq; using System.Threading.Tasks; using Microsoft.AspNet.Http.Internal; using Microsoft.AspNetCore.Http.Internal; public class LoggerMiddleware { private readonly Reques...
Starting JShell Before trying to start JShell, make sure your JAVA_HOME environment variable points to a JDK 9 installation. To start JShell, run the following command: $ jshell If all goes well, you should see a jshell> prompt. Exiting JShell To exit JShell, run the following command from...
The DividerItemDecoration is a RecyclerView.ItemDecoration that can be used as a divider between items. DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(context, mLayoutManager.getOrientation()); recyclerView.addItemDecoration(mDividerItemDecoration); It su...
The keyword function can be used to initiate pattern-matching on the the last argument of a function. For example, we can write a function called sum, which computes the sum of a list of integers, this way let rec sum = function | [] -> 0 | h::t -> h + sum t ;; val sum : int list -&...
To access complete schema of server db instead of single table. Follow below steps: Create EXTENSION : CREATE EXTENSION postgres_fdw; Create SERVER : CREATE SERVER server_name FOREIGN DATA WRAPPER postgres_fdw OPTIONS (host 'host_ip', dbname 'db_name', port 'port_numb...
If you have an Arduino connected to a computer or a Raspberry Pi, and want to send data from the Arduino to the PC you can do the following: Arduino: void setup() { // Opens serial port, sets data rate to 9600 bps: Serial.begin(9600); } void loop() { // Sends a line over serial: Se...
You can include/install Select2 in one of the two ways Directly using CDN's in your project under the head section of your project. link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet"/> <script src="https://cdnjs...
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Ffmpeg is a swiss knife for streaming project. For any kind of device streaming you only need to get the specification of device. To list the device ffmpeg -f dshow -list_devices true -i dummy Command prompt will list all the aviable device on machine. [dshow @ 0000000004052420] DirectShow vid...
In Rx Subjects have internal states that can control their behavior. A common use-case form Subject is subscribing it to multiple Observables. The following example creates two different Observables and subscribes a Subject to both of them. Then it tries to print all values that went through: let ...
Redis allow you to use the String data type to store floating point numbers. A user can set the float value of a key using the command: SET floatkey 2.0 The set command will create the key if necessary or update it if it already exists. The value of the key can be updated on the server using e...
Interceptors are a good tool for implementing cross-cutting concerns such as logging or authentication. Let's say we have a following service: public interface IService { string CreateOrder(NetworkCredential credentials, Order orderToCreate); string DeleteOrder(NetworkCredential credenti...
For registration like this: var container = new WindsorContainer(); container.Register( Component.For<FirstInterceptor>(), Component.For<SecondInterceptor>(), Component.For<ThirdInterceptor>(), Component.For<IService>() .ImplementedBy<Servi...
Providing your microsoft account credentials you can authenticate and receive subscription keys to start with the services. This document describes the various flows in the tool to create your own knowledge base. QnA Maker works in three steps: extraction, training and publishing. To start, feed ...
A shift register of generic length. With serial in and serial out. library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all; entity SHIFT_REG is generic( LENGTH: natural := 8 ); port( SHIFT_EN : in std_logic; SO : out std_logic; ...
Once you become familiar with the code to call one method on one Google service, you will be able to infer how to call any method on any Google service. First, we make a connection to the service using the credential object instantiated in the previous example: CloudResourceManagerService service ...

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