Tutorial by Topics: i

CanCan is a simple authorization strategy for Rails which is decoupled from user roles. All permissions are stored in a single location. Before using CanCan don't forget to create Users either by devise gem or manually. To get maximum functionality of CanCan do create an Admin user.

UIImagePickerController provides an almost out of the box solution to allow the user to select an image from their device or take a picture with the camera and then present that image. By conforming to the UIImagePickerControllerDelegate, you can create logic that specifies in your app how to presen...

Tcl is a cross platform language with full unicode support. Flexibility: redefine or enhance existing commands or write new commands. Event driven programming: Event driven I/O and variable tracing. Library Interface: It is very easy to integrate existing C libraries into Tcl and provide a Tcl ...

Swift has an official style guide: Swift.org API Design Guidelines. Another popular guide is The Official raywenderlich.com Swift Style Guide.

AttributeDescriptionx1Horizontal position of start of line.y1Vertical position of start of line.x2Horizontal position of end of line.y2Vertical position of end of line.strokeColor of line.stroke-widthWidth of line.stroke-opacityOpacity of line.stroke-dasharrayDash pattern for the linestroke-linecap...

[ localpart "@" ] domainpart [ "/" resourcepart ] PartCommon UsageLocalpartIdentifies an XMPP entity (optional)DomainpartIdentifies the XMPP serviceResourcepartIdentifies a session of an XMPP entity (optional) XMPP addresses, more commonly known as JIDs (Jabber Identif...

XMPP allows for the full-duplex exchange of structured data and concurrent processing of requests between globally addressable clients and servers on the network. Unlike HTTP and the "Representational State Transfer" (REST) architecture widely deployed on the web, XMPP connections are st...

Multi-Dimensional eXpressions MDX is a declarative language. A developer will use it to query multi-dimensional data structures known as OLAP Cubes. It is also used within the cubes to create aspects of the cubes.

This section provides an overview of what firebase-database is, and why a developer might want to use it. It should also mention any large subjects within firebase-database, and link out to the related topics. Since the Documentation for firebase-database is new, you may need to create initial v...

REST Service Endpoint URLs The REST client access API was first introduced in SharePoint 2010, but was greatly expanded in SharePoint 2013. The REST API in SharePoint 2010 is accessed through the ListData web service at the /_vti_bin/ListData.svc url. SharePoint 2013 introduced the /_api/lists/...

One way binding from parent component to nested component: [propertyName] One way binding from nested component to parent component: (propertyName) Two-way binding (a.k.a banana box notation) : [(propertyName)]

@RequestPart(String, String, boolean) ParameterDetails@RequestPartThis annotation specifies that a parameter should be mapped to a given request part. The part name must match the name of the method parameter, unless you choose to provide it as an argument to @RequestPart. If the part name i...