Tutorial by Examples: u

If you have void F1(MyType1 x) { // do something } void F1(MyType2 x) { // do something else } and for some reason you need to call the first overload of F1 but with x = null, then doing simply F1(null); will not compile as the call is ambiguous. To counter this you can do F1...

Detailed instructions on getting wso2is set up or installed.

Schema refers to a specific database tables and how they are related to each other. It provides an organisational blueprint of how the database is constructed. Additional benefits of implementing database schemas is that schemas can be used as a method restricting / granting access to specific table...

Setting up deep-linking for your app is easy.You just need a small url using which you want to open your app. Follow the steps to set up deep-linking for your app. Lets create a project and name it DeepLinkPOC. Now select your project target. After selecting target,select the 'info' ...

jmp a_label ;Jump to a_label jmp bx ;Jump to address in BX jmp WORD [aPointer] ;Jump to address in aPointer jmp 7c0h:0000h ;Jump to segment 7c0h and offset 0000h jmp FAR WORD [aFarPointer] ;Jump to segment:offset...

Based on the state of the flags the CPU can either execute or ignore a jump. An instruction that performs a jump based on the flags falls under the generic name of Jcc - Jump on Condition Code1. Synonyms and terminology In order to improve the readability of the assembly code, Intel defined severa...

This example will wake up every Application Processor (AP) and make them, along with the Bootstrap Processor (BSP), display their LAPIC ID. ; Assemble boot sector and insert it into a 1.44MiB floppy image ; ; nasm -f bin boot.asm -o boot.bin ; dd if=/dev/zero of=disk.img bs=512 count=2880 ; dd ...

Send a message using GCM HTTP connection server protocol: https://gcm-http.googleapis.com/gcm/send Content-Type:application/json Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA { "to": "/topics/foo-bar", "data": { "message": "T...

To get the current date and time, use the now function: julia> now() 2016-09-04T00:16:58.122 This is the local time, which includes the machine's configured time zone. To get the time in the Coordinated Universal Time (UTC) time zone, use now(Dates.UTC): julia> now(Dates.UTC) 2016-09-04...

Draper automatically matches up models with their decorators by convention. # app/decorators/user_decorator.rb class UserDecorator < Draper::Decorator def full_name "#{object.first_name} #{object.last_name}" end def created_at Time.use_zone(h.current_user.timezone...

Postscript is a dynamic-namespacing or LISP 1 language. But it provides the tools to implement local variables in procedures and other effects needed to implement algorithms. For local names in a procedure, make a new dictionary at the start and pop it at the end. /myproc { 10 dict begin ...

Detailed instructions on getting rails-activerecord set up or installed.

After finding an official Julia package, it is straightforward to download and install the package. Firstly, it's recommended to refresh the local copy of METADATA: julia> Pkg.update() This will ensure that you get the latest versions of all packages. Suppose that the package we want to inst...

Sometimes, the latest tagged version of a package is buggy or is missing some required features. Advanced users may wish to update to the latest development version of a package (sometimes referred to as the "master", named after the usual name for a development branch in Git). The benefit...

Some experimental packages are not included in the METADATA package repository. These packages can be installed by directly cloning their Git repositories. Note that there may be dependencies of unregistered packages that are themselves unregistered; those dependencies cannot be resolved by the pack...

This example covers common errors with using the 'java' command. "Command not found" If you get an error message like: java: command not found when trying to run the java command, this means that there is no java command on your shell's command search path. The cause could be: yo...

Animation curves allows you to change a float parameter as the animation plays. For example, if there is an animation of length 60 seconds and you want a float value/parameter, call it X, to vary through the animation (like at animation time = 0.0s; X = 0.0 , at animation time = 30.0s; X = 1.0, at...

Buttons are one of the simplest controls and mostly used for executing some code when the user wants. Here we have a really simple case, show a Message box when a button is clicked. We add a button to a form, name it cmdShowMessage as used in code to identify the object and set the buttons text to ...

WampServer is a Windows web development environment. It allows you to create web applications with Apache2, PHP and a MySQL database. Alongside, PhpMyAdmin allows you to manage easily your databases. WampServer is available for free (under GPML license) in two distinct versions : 32 and 64 bits. Wa...

String macros are syntactic sugar for certain macro invocations. The parser expands syntax like mymacro"my string" into @mymacro_str "my string" which then, like any other macro call, gets substituted with whatever expression the @mymacro_str macro returns. Base Julia com...