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String and char-like variables can be concatenated using ABAP CONCATENATE command. An extra variable for storing the results is required. Example: CONCATENATE var1 var2 var3 INTO result. "result now contains the values of var1, var2 & var3 stringed together without spaces Shorthand ...

$ IFS= read -r foo <<EOF > this is a \n line >EOF $ printf '%s\n' "$foo" this is a \n line

Static variables and methods are not part of an instance, There will always be a single copy of that variable no matter how many objects you create of a particular class. For example you might want to have an immutable list of constants, it would be a good idea to keep it static and initialize it j...

Instead of using the delegate pattern, that split the implementation in various part of the UIViewController class, you can even use closures to pass data back and forward. By assuming that you're using the UIStoryboardSegue, in the prepareForSegue method you can easily setup the new controller in ...

Select data from a partition SELECT * FROM orders PARTITION(partition_name);

ALTER TABLE table_name TRUNCATE PARTITION partition_name;

JasperSoft Studio If datasource or database connection is needed to fill report, create your Data Adapter in Repository Explorer by right clicking "Data Adapters" selecting "Create Data Adapter" Enter preview mode by selecting the Preview tab (no errors in deign need t...

Common Requirements All reports, regardless of how the data is presented, take a path to the report template and a parameter map. The variables are used in all examples that follow: // Parameters passed into the report. Map<String, Object> parameters = new HashMap<>(); // Arbitrary...

Magento custom module development is a core part of any Magento development or Magento project, because at any stage you may want to integrate your own functionality/module in your existing Magento project. The first thing developers should disable is the system cache. Otherwise developing will bec...

Create a new project with the Leiningen figwheel template: lein new figwheel hello-world Run Figwheel: cd hello-world lein figwheel After a moment it will start a development webserver and open the page in your browser. It also opens a Clojurescript REPL connected to the browser. Try enter...

Some ADO.NET providers (most notably: OleDB) do not support named parameters; parameters are instead specified only by position, with the ? place-holder. Dapper would not know what member to use for these, so dapper allows an alternative syntax, ?foo?; this would be the same as @foo or :foo in other...

User-defined method objects may be created when getting an attribute of a class (perhaps via an instance of that class), if that attribute is a user-defined function object, an unbound user-defined method object, or a class method object. class A(object): # func: A user-defined function object...

angular .module('MyApp', []) .constant('VERSION', 1.0); Your constant is now declared and can be injected in a controller, a service, a factory, a provider, and even in a config method: angular .module('MyApp') .controller('FooterController', function(VERSION) { this.version = V...

If you are unsure which rules to list in your .gitignore file, or you just want to add generally accepted exceptions to your project, you can choose or generate a .gitignore file: https://www.toptal.com/developers/gitignore https://github.com/github/gitignore Many hosting services such as Git...

Start a Script Block as background job: $job = Start-Job -ScriptBlock {Get-Process} Start a script as background job: $job = Start-Job -FilePath "C:\YourFolder\Script.ps1" Start a job using Invoke-Command on a remote machine: $job = Invoke-Command -ComputerName "ComputerName&...

async.waterfall(tasks, afterTasksCallback) will execute a set of tasks. Each task are executed after another, and the result of a task is passed to the next task. As async.series(), if a task fails, async stop the execution and call immediately the main callback. When tasks are finished successfull...

Dropping the database is a simple one-liner statement. Drop database will delete the database, hence always ensure to have a backup of the database if required. Below is the command to drop Employees Database DROP DATABASE [dbo].[Employees]

SELECT name, caption as title, year, pages FROM books UNION SELECT name, title, year, 0 as pages FROM movies When combining 2 record sets with different columns then emulate the missing ones with default values.

Note: There will be some Objective-c in this example.. We will make a wrapper to C++ in this example, So don't worry to much about it. First start Xcode and create a project. And select a Cocoa application Delete all sources except the Info.plist file.(Your app won't work without it) Creat...

#include <Windows.h> DWORD WINAPI DoStuff(LPVOID lpParameter) { // The new thread will start here return 0; } int main() { // Create a new thread which will start at the DoStuff function HANDLE hThread = CreateThread( NULL, // Thread attributes ...