Tutorial by Examples: io

Before talking about porting Firefox extensions from/to, one should know what WebExtensions is. WebExtensions - is a platform that represents an API for creating Firefox extensions. It uses the same architecture of extension as Chromium, as a result, this API is compatible in many ways with API in...

The following configuration options should be called on a Rails::Railtie object config.after_initialize: Takes a block which will be run after rails has initialized the application. config.asset_host: This sets the host for the assets. This is useful when using a Content Delivery Network. This i...

Trees are a sub-type of the more general node-edge graph data structure. To be a tree, a graph must satisfy two requirements: It is acyclic. It contains no cycles (or "loops"). It is connected. For any given node in the graph, every node is reachable. All nodes are reachable throug...

Code First infer the relationship between the two entities using navigation property. This navigation property can be a simple reference type or collection type. For example, we defined Standard navigation property in Student class and ICollection navigation property in Standard class. So, Code Firs...

Manage Roles Global Roles- Create roles with selected set of Jenkins features e.g. Usually for a development project, 2 roles can be created. Developer- Global role can be set to only Overall : Read ProjectOwner- Global role can be set to Overall : Read This restricts developer and project ...

@Entity @Table(name="FOO") public class Foo { private UUID fooId; @OneToMany(mappedBy = "bar") private List<FooBar> bars; } @Entity @Table(name="BAR") public class Bar { private UUID barId; @OneToMany(mappedBy = "f...

@Entity @Table(name="FOO") public class Foo { private UUID fooId; @OneToMany @JoinTable(name="FOO_BAR", joinColumns = @JoinColumn(name="fooId"), inverseJoinColumns = @JoinColumn(name="barId")) private List<Bar&g...

@Entity @Table(name="FOO") public class Foo { private UUID fooId; @OneToMany(mappedBy = "bar") private List<Bar> bars; } @Entity @Table(name="BAR") public class Bar { private UUID barId; @ManyToOne @JoinColumn(nam...

@Entity @Table(name="FOO") public class Foo { private UUID fooId; @OneToOne(cascade = CascadeType.ALL) @JoinColumn(name = "barId") private Bar bar; } @Entity @Table(name="BAR") public class Bar { private UUID barId; ...

@Entity @Table(name="FOO") public class Foo { private UUID fooId; @OneToMany @JoinTable(name="FOO_BAR", joinColumns = @JoinColumn(name="fooId"), inverseJoinColumns = @JoinColumn(name="barId", unique=true)) private ...

@Entity @Table(name="FOO") public class Foo { private UUID fooId; @OneToOne private Bar bar; } @Entity @Table(name="BAR") public class Bar { private UUID barId; //No corresponding mapping to Foo.class } Specifies a one-way relationship b...

Generic redirect to https: # Enable Rewrite engine RewriteEngine on # Check if URL does not contain https RewriteCond %{HTTPS} off [NC] # If condition is true, redirect to https RewriteRule (.*) https://%{SERVER_NAME}/$1 [R=301,L] Generic redirect to http: # Enable Rewrite engine Rewr...

Add the following directive before using any other mod_rewrite directive (RewriteRule, RewriteCond, RewriteBase or RewriteMap). RewriteEngine on By default the engine is turned off. mod_rewrite directives found while the engine is turned off are ignored. Enable it from within the virtual host co...

Important: Using the dynamic configuration files (.htaccess) is a big performance hit. When you have access to the static configuration file (httpd.conf or something similar) you should use that instead. In the static configuration file, allow dynamic configuration files to override "Filei...

Creating a chart that displays a static dataset is relatively simple. For example, if we have this array of objects as the data: var data = [ {title: "A", value: 53}, {title: "B", value: 12}, {title: "C", value: 91}, {title: "D", value: 24...

Below are some tips to remember while we are writing a select query in MySQL that can help us and reduce our query time:- Whenever we use where in a large table we should make sure the column in where clause are index or not. Ex:- Select * from employee where user_id > 2000. user_id if ind...

Detailed instructions on getting axapta set up or installed.

A function is a named block of code which is used to define reusable code that should be easy to use. It is usually included inside a script to help reuse code (to avoid duplicate code) or distributed as part of a module to make it useful for others in multiple scripts. Scenarios where a function m...

Download the latest stable version from Activiti's website or you can check out the code from github and unzip to a directory of choice and then check out the readme.html that includes pointers to the docs and the release notes. The userguide ( docs/userguide/index.html ) includes instructions on ho...

<C-^> will switch to and from the previous edited file. On most keyboards <C-^> is CTRL-6. 3<C-^> will switch to buffer number 3. This is very quick, but only if you know the buffer number. You can see the buffer numbers from :ls or from a plugin such as MiniBufExplorer.