Tutorial by Examples: re

Spring boot is based on a lot of pre-made auto-configuration parent projects. You should already be familiar with spring boot starter projects. You can easily create your own starter project by doing the following easy steps: Create some @Configuration classes to define default beans. You should...

Calling C code from Go package main /* // Everything in comments above the import "C" is C code and will be compiles with the GCC. // Make sure you have a GCC installed. int addInC(int a, int b) { return a + b; } */ import "C" import "fmt" func ma...

Reference types are comprised of both a reference to a memory area, and a value stored within that area. This is analogous to pointers in C/C++. All reference types are stored on what is known as the heap. The heap is simply a managed area of memory where objects are stored. When a new object is ...

In the following, weight is declared as a mutable field. type person = { name: string; mutable weight: int };; Remark: As far as design is concerned here, one would consider the fact that a person's name isn't likely to change, but their weight is.

Initializing a record with mutable fields isn't different from a regular record initialization. let john = { name = "John"; weight = 115 };;

On the machine where you'd like to make the backup, jump to the Redis CLI: redis-cli Password? If your master Redis DB (the one you want to replicate) has a password: config set masterauth <password> Start replication Run the following to begin replication: SLAVEOF <host> <...

/* creates a database for Alfresco, on SQLServer 2008- 2014 */ use master; GO CREATE DATABASE alfresco; GO /* creates a new LOGIN and associated User use alfresco; GO CREATE LOGIN alfresco WITH PASSWORD = 'alfresco'; GO use alfresco; go CREATE USER alfresco FOR LOGIN alfresco; GO ...

One time definition of a generic base class with recursive type specifier. Each node has one parent and multiple children. /// <summary> /// Generic base class for a tree structure /// </summary> /// <typeparam name="T">The node type of the tree</typeparam> pub...

To access the Open Resource dialog use Ctrl + Shift + R. From here you can start typing a resource name and it will find all matches in the workspace, this makes it easier to find a file when you don't know exactly were it is.

hql = "From Employee where id = 22";

QtCreator is, at the moment, the best tool to create a Qt application. In this example, we will see how to create a simple Qt application which manage a button and write text. To create a new application click on File->New File or Project: Then choose the Projects->Application->Qt Widge...

create or replace directory DATAPUMP_REMOTE_DIR as '/oracle/scripts/expimp';

expdp <bkpadmin>/<bkp123> directory=DATAPUMP_REMOTE_DIR dumpfile=<customer.dmp> impdp <bkpadmin>/<bkp123> directory=DATAPUMP_REMOTE_DIR dumpfile=<customer.dmp> remap_schema=<source schema>:<target schema> remap_tablespace=<source tablespace&g...

private string AddGraph(WordprocessingDocument wpd, string filepath) { ImagePart ip = wpd.MainDocumentPart.AddImagePart(ImagePartType.Jpeg); using (FileStream fs = new FileStream(filepath, FileMode.Open)) { if (fs.Length == 0) return string.Empty; ip.FeedData(fs); ...

private void InsertImage(WordprocessingDocument wpd, OpenXmlElement parent, string filepath) { string relationId = AddGraph(wpd, filepath); if (!string.IsNullOrEmpty(relationId)) { Size size = new Size(800, 600); Int64Value width = size.Width * 9525; Int6...

There will be times where you only want to import a specific sheet from an excel file with multiple sheets. To do that, we'll use "SHEET=". PROC IMPORT OUT= YourNewTable DATAFILE= "myfolder/excelfilename.xlsx" DBMS=xlsx REPLACE; SHEET="Sheet1&quo...

A frequent question about StackViews inside Scrollviews comes from ambiguous with/heigh alerts on interface builder. As this answer explained, it is necessary to: Add in the UIScrollView a UIView (the contentScrollView); In this contentScrollView, set top, bottom, left and right margins to 0 Se...

To generalise what we've demonstrated above: individual things contain a fixed margin of "half-the-whitespace", and the container they are held in should have a padding of "half-the-whitespace". You can apply these styles in your application resource dictionary, and then you won'...

You can asynchronously return a value for each processed message if you send an AsyncReplyChannel<'a> as part of the message. type MessageWithResponse = Message of InputData * AsyncReplyChannel<OutputData> Then the mailbox processor can use this channel when processing the message to...

Starting from a sequence of static images (for example called frame01.jpg, frame02.jpg and so on) an animated gif can be created using the following command: magick -delay 10 -loop 0 frame*.jpg animation.gif -delay 10 sets the interval between the frames to 0.1 seconds -loop 0 creates a...