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Opening a database is database specific, here there are examples for some databases. Sqlite 3 file := "path/to/file" db_, err := sql.Open("sqlite3", file) if err != nil { panic(err) } MySql dsn := "mysql_username:CHANGEME@tcp(localhost:3306)/dbname" db, e...

Detailed instructions on getting slf4j set up or installed.

Detailed instructions on getting IBM MQ set up or installed.

Components let you split the UI into independent, reusable pieces. This is the beauty of React; we can separate a page into many small reusable components. Prior to React v14 we could create a stateful React component using React.Component (in ES6), or React.createClass (in ES5), irrespective of wh...

use Time::HiRes qw( time ); my $start = time(); #Code for which execution time is calculated sleep(1.2); my $end = time(); printf("Execution Time: %0.02f s\n", $end - $start); This will print execution time of Code in seconds

If you installed Laravel via Composer or the Laravel installer, below configuration you will need. Configuration for Apache Laravel includes a public/.htaccess file that is used to provide URLs without the index.php front controller in the path. Before serving Laravel with Apache, be sure to enabl...

Detailed instructions on getting cpanel set up or installed.

Detailed instructions on getting service-worker set up or installed.

Detailed instructions on getting nutch set up or installed.

The primitive types in OpenCV are unsigned char, bool, signed char, unsigned short, signed short, int, float, double. Any data type in OpenCV is defined as CV_<bit-depth>{U|S|F}C(<number_of_channels>) where U: unsigned, S:signed and F:floating point. For example, CV_32FC2 is a 32-bit, ...

Mat (Matrix) is an n-dimensional array that can be used to store various type of data, such as RGB, HSV or grayscale images, vectors with real or complex values, other matrices etc. A Mat contains the following information: width, height, type, channels, data, flags, datastart, dataend and so on. ...

To add additional restriction to the poReceiptLinesSelection data view, you should invoke Select method on base view and inspect each item in returned PXResultSet independently to decide if it complies with additional restriction(s): public class APInvoiceEntryExt : PXGraphExtension<APInvoiceEn...

Assume we need to add an NSString object to SomeClass (we cant subclass). In this example we not only create an associated object but also wrap it in a computed property in a category for extra neatness #import <objc/runtime.h> @interface SomeClass (MyCategory) // This is the property wr...

Client apps can subscribe to any existing topic, or they can create a new topic. When a client app subscribes to a new topic name, a new topic of that name is created in FCM and any client can subsequently subscribe to it. To subscribe to a topic use the subscribeToTopic() method specifying the top...

Individual pixel access in OpenCV Mat structure can be achieved in multiple ways. To understand how to access, it is better to learn the data types first. Basic Structures explains the basic datatypes. Shortly, CV_<bit-depth>{U|S|F}C(<number_of_channels>) is the basic structure of a typ...

Ways to create a file with the echo command: ECHO. > example.bat (creates an empty file called "example.bat") ECHO message > example.bat (creates example.bat containing "message") ECHO message >> example.bat (adds "message" to a new line in example.bat)...

In OpenCV, images can be RGB/BGR, HSV, grayscaled, black-white and so on. It is crucial to know the data type before dealing with images. The image data types are mainly CV_8UC3 (Matrix of uchar with 3 channels) and CV_8U (Matrix of uchar with 1 channel), however, the conversion to other types such...

DispatchGroup allows for aggregate synchronization of work. You can use them to submit multiple different work items and track when they all complete, even though they might run on different queues. This behavior can be helpful when progress can’t be made until all of the specified tasks are c...

Activate Developer Mode: Login to odoo application. After login user may see several odoo menu's. Click on setting menu. Click on 'Activate the developer mode' which is located at right-bottom corner of settings page. Developer mode now activated.

import React from 'react'; class SearchEs6 extends React.Component{ constructor(props) { super(props); this.state = { searchResults: [] }; } showResults(response){ this.setState({ searchResults: response.results ...