Tutorial by Examples: com

By default Controllers, ViewComponents and TagHelpers aren't registered and resolved via the dependency injection container. This results in the inability to do i.e. property injection when using a 3rd party Inversion of Control (IoC) container like AutoFac. In order to make ASP.NET Core MVC resolv...

dispatch_group_t preapreWaitingGroup = dispatch_group_create(); dispatch_group_enter(preapreWaitingGroup); [self doAsynchronousTaskWithComplete:^(id someResults, NSError *error) { // Notify that this task has been completed. dispatch_group_leave(preapreWaitingGroup); }] dispatch...

To set the environment to Development SET ASPNETCORE_ENVIRONMENT=Development Now running an Asp.Net Core application will be in the defined environment. Note There should be no space before and after the equality sign =. The command prompt should not be closed before running the application b...

The single line comment begins with "//" or "#". When encountered, all text to the right will be ignored by the PHP interpreter. // This is a comment # This is also a comment echo "Hello World!"; // This is also a comment, beginning where we see "//" ...

The multi-line comment can be used to comment out large blocks of code. It begins with /* and ends with */. /* This is a multi-line comment. It spans multiple lines. This is still part of the comment. */

SQL Server 2008 The ROW_NUMBER function can assign an incrementing number to each row in a result set. Combined with a Common Table Expression that uses a BETWEEN operator, it is possible to create 'pages' of result sets. For example: page one containing results 1-10, page two containing results 11...

Writing a gzipped file To write a gzipped file, use the module IO::Compress::Gzip and create a filehandle by creating a new instance of IO::Compress::Gzip for the desired output file: use strict; use warnings; use open qw( :encoding(UTF-8) :std ); # Make UTF-8 default encoding use IO::Compres...

To handle a command, you must have a class that implements the CommandExecutor interface. The JavaPlugin class (your plugin's main class) already implements this. When implementing the CommandExecutor interface, the following method must be implemented: public boolean onCommand(CommandSender sende...

A Cmd cannot be reused after calling its Run, Output or CombinedOutput methods Running a command twice will not work: cmd := exec.Command("xte", "key XF86AudioPlay") _ := cmd.Run() // Play audio key press // .. do something else err := cmd.Run() // Pause audio key press,...

Big data involves the data produced by different devices and applications. Given below are some of the fields that come under the umbrella of Big Data. Black Box Data : It is a component of helicopter, airplanes, and jets, etc. It captures voices of the flight crew, recordings of microphones an...

Go to the Microsoft link for the OpenXML SDK download. Click the red download button. On the next screen click the box next to OpenXMLSDKToolV25.msi and click next to begin the download. Once the download is complete, launch the OpenXMLSDKToolV25.msi and follow the instructions on the screen. Th...

There are two types of Active Patterns that somewhat differ in usage - Complete and Partial. Complete Active Patterns can be used when you are able to enumerate all the outcomes, like "is a number odd or even?" let (|Odd|Even|) number = if number % 2 = 0 then Even else Odd N...

(************************************************* * All comments in SML are block comments * Block Comments begin with '(*' * Block Comments end with '*)' * (* Block Comments can be nested *) * The additional framing asterisks at the beginning * and end of this block comment are common ...

(* The block comment syntax allows nested comments (* whether or not this is a good thing is probably a matter of personal opinion (*or coding standards*)*)*) val _ = print "Nested comment example\n" (* line ending block comment *)

Use conditional compilation to ensure that code only compiles for the intended instruction set (such as x86). Otherwise code could become invalid if the program is compiled for another architecture, such as ARM processors. #![feature(asm)] // Any valid x86 code is valid for x86_64 as well. Be ca...

All communications between Fragments must go via an Activity. Fragments CANNOT communicate with each other without an Activity. Additional Resources How to implement OnFragmentInteractionListener Android | Communicating With Other Fragments In this sample, we have a MainActivity that hosts t...

The for comprehension is a compact way to run a block of code that depends on the successful result of multiple futures. With f1, f2, f3 three Future[String]'s that will contain the strings one, two, three respectively, val fCombined = for { s1 <- f1 s2 <- f2 ...

Command Structure is sqlcmd -S yourservername\instancename -d database_name -o outputfilename_withpath -Q "your select query" Switches are as follows -S for servername and instance name -d for source database -o for target outputfile (it will create output file) -Q fo...

Using the IntDef#flag() attribute set to true, multiple constants can be combined. Using the same example in this topic: public abstract class Car { //Define the list of accepted constants @IntDef(flag=true, value={MICROCAR, CONVERTIBLE, SUPERCAR, MINIVAN, SUV}) //Tell the compi...

0.6.0-dev In Julia v0.6 and later, command macros are supported in addition to regular string macros. A command macro invocation like mymacro`xyz` gets parsed as the macro call @mymacro_cmd "xyz" Note that this is similar to string macros, except with _cmd instead of _str. We typ...