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Sometimes you might want to pass information that has been generated in one form, to another form for additional use. This is useful for forms that display a search tool, or a settings page among many other uses. Let's say you want to pass a DataTable between a form that is already open (MainForm) ...

The following procedure is a generic one which will be used to log all errors in an application to a common error log table. CREATE OR REPLACE PROCEDURE log_errors ( p_calling_program IN VARCHAR2, p_error_code IN INTEGER, p_error_description IN VARCHAR2 ) IS PRAGMA AUTONOMOUS_TRANSAC...

Use the analytical function row_number(): with t as ( select col1 , col2 , row_number() over (order by col1, col2) rn from table ) select col1 , col2 from t where rn between N and M; -- N and M are both inclusive Oracle 12c handles this more easily with OFFSET and FETCH.

app.use() and middleware can be used for "before" and a combination of the close and finish events can be used for "after". app.use(function (req, res, next) { function afterResponse() { res.removeListener('finish', afterResponse); res.removeListener('clos...

String base64="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; void setup() { Serial.begin(9600); // Turn the serial protocol ON Serial.println("Start Typing"); } void loop() { if (Serial.available() > 0) { // Check if data has bee...

Create a sample application using spring-boot from spring-boot initializer site. Import the code in your local IDE and run the goal as clean install spring-boot:run -e Go to target folder and check for the jar file. Open your Amazon account or create a new Amazon Account and selec...

Using the Swift class Mirror works if you want to extract name, value and type (Swift 3: type(of: value), Swift 2: value.dynamicType) of properties for an instance of a certain class. If you class inherits from NSObject, you can use the method class_copyPropertyList together with property_getAttrib...

It's a good practice to encode state of Single Page Application (SPA) in url: my-app.com/admin-spa/users/edit/id123 This allows to save and share application state. When user puts url into browser's address bar and hits enter server must ignore client-side part of the requested url. If you serv...

Most programming languages support the for-loop control structure. It is generally implemented in this way: for(init; condition; increment){ content_code(); } The above pseudocode is identical with the pseudocode below: init; start_loop: if(condition){ content_code(); increme...

create() write() search() browse() exists() ref() ensure_one()

Let's say you have an academic system. The bounded contexts would be like this: Admission of new undergraduate students Distribution of students on classrooms considering a schedule of the courses and occupation, size and type of classrooms Management of courses, hierarchies and predecessors of...

The following utility can be used for auto-completion of commands: $ which aws_completer /usr/bin/aws_completer $ complete -C '/usr/bin/aws_completer' aws For future shell sessions, consider add this to your ~/.bashrc $ echo "complete -C '/usr/bin/aws_completer' aws" >> ~/.b...

You can use extensions for reference View, no more boilerplate after you created the views. Original Idea is by Anko Library Extensions inline fun <reified T : View> View.find(id: Int): T = findViewById(id) as T inline fun <reified T : View> Activity.find(id: Int): T = findViewById(i...

We may forget to apply the Antiforgery attribute for each POST request so we should make it by default. This sample will make sure Antiforgery filter will always be applied to every POST request. Firstly create new AntiForgeryTokenFilter filter: //This will add ValidateAntiForgeryToken Attribute t...

To add to the first example, in order to test navigation statements that occurs within the application, we need to provide the ViewModel with a hook to the Navigation. To achieve this: Add the package SpecFlow.Xamarin.Forms.IViewModel from nuget to your PCL Xamarin.Forms project Implement the IV...

Step 1: Create a bluemix account Create an account at https://console.ng.bluemix.net/registration/ This will set you up with a 30 day trial. You don't have to pay anything for the free resources and you don't have to set up billing until the end of your trial (though not all services will be avail...

Installation npm install forever -g cd /node/project/directory Usages forever start app.js

SOAP is an acronym for Simple Object Access Protocol which defines a protocol that is used to exchange data via a Remote Procedure Call (RPC) with other SOAP services or clients. It is available in two version: SOAP 1.1 [IETF] SOAP 1.2 [IETF] SOAP 1.2 obsoletes SOAP 1.1 it is therefore recomm...

1. Logs: By default, Heroku allows only 1500 lines of consolidated logs. When more than 1500 lines of logs are required, one has to use addons provided Heroku. 2. Router: HTTP request have 30s timeout for initial response and 55s timeout thereafter. Maximum of 1MB buffer allowed for response. 3....

The below example widget demonstrates how to format individual cells of a TreeView column conditionally, depending on value of the field in the particular cell. If value of field is negative, then it'll be displayed in red color and minus symbol will be hidden, otherwise it'll be displayed in normal...