Tutorial by Examples: n

Since Sphinx is available on the Python Package Index, it can be installed using pip: pip install Sphinx or you can also install using easy_install easy_install -U sphinx Then you can check that it has been correctly installed by executing the following command: > sphinx-quickstart --ver...

Variables can be used in string interpolation. This allows you to dynamically generate selectors, properties and values. And the syntax for doing so a variable is #{$variable}. $className: widget; $content: 'a widget'; $prop: content; .#{$className}-class { #{content}: 'This is #{$content}'...

Some CSS properties belong to a namespace, for instance border-right belongs to the border namespace. To write less, we can utilize property nesting, and skip these prefixes, even on multiple levels. If we needed to create a border on the right and left of a class named .borders we could write this...

SELECT EncryptByPassphrase('MyPassPhrase', 'This text will get encrypted') This will also encrypt but then by passphrase instead of asymmetric(certificate) key or by an explicit symmetric key.

inline int add(int x, int y);

Detailed instructions on getting acumatica set up or installed.

Graph Theory is the study of graphs, which are mathematical structures used to model pairwise relations between objects. Did you know, almost all the problems of planet Earth can be converted into problems of Roads and Cities, and solved? Graph Theory was invented many years ago, even before the in...

SQL Server and SQLite allow to create indexes that contain not only a subset of columns, but also a subset of rows. Consider a constant growing amount of orders with order_state_id equal to finished (2), and a stable amount of orders with order_state_id equal to started (1). If your business make ...

I common problem encounter when scrapping a web is how to enter a userid and password to log into a web site. In this example which I created to track my answers posted here to stack overflow. The overall flow is to login, go to a web page collect information, add it a dataframe and then move to t...

Attributes can be useful for denoting metadata on enums. Getting the value of this can be slow, so it is important to cache results. private static Dictionary<object, object> attributeCache = new Dictionary<object, object>(); public static T GetAttribute<T, V>(this V va...

In some cases you may want to change which notification you use based on a tag in the Alert keys. You can do this using the Lookup feature. Note: Lookup only works if you are using OpenTSDB and sending data to the Bosun to be indexed. For other backends or non-indexed data you have to use lookupSeri...

Xcode 8 will automatically recognize any images you’ve got in an Asset Catalog and offer them up as a suggestion inside of a UIImage initializer. So you could basically declare a new variable and then add an asset name that you have added to your asset catalog. For example let img = dog. img does n...

Small, simple csv files can be built using just a text editor, because a CSV file is simply text. If you have spreadsheet software available these are usually an easy way to open and save CSV files. Reading and writing them, or otherwise processing their contents is done more efficiently using the ...

To enable Code First Migrations in entity framework, use the command Enable-Migrations on the Package Manager Console. You need to have a valid DbContext implementation containing your database objects managed by EF. In this example the database context will contain to objects BlogPost and Auth...

Weighted Job Scheduling Algorithm can also be denoted as Weighted Activity Selection Algorithm. The problem is, given certain jobs with their start time and end time, and a profit you make when you finish the job, what is the maximum profit you can make given no two jobs can be executed in parallel...

To store a graph, two methods are common: Adjacency Matrix Adjacency List An adjacency matrix is a square matrix used to represent a finite graph. The elements of the matrix indicate whether pairs of vertices are adjacent or not in the graph. Adjacent means 'next to or adjoining something el...

The Assignment Operator is when you replace the data with an already existing(previously initialized) object with some other object's data. Lets take this as an example: // Assignment Operator #include <iostream> #include <string> using std::cout; using std::endl; class Foo { ...

Copy constructor on the other hand , is the complete opposite of the Assignment Constructor. This time, it is used to initialize an already nonexistent(or non-previously initialized) object. This means it copies all the data from the object you are assigning it to , without actually initializing the...

Ok we have briefly looked over what the copy constructor and assignment constructor are above and gave examples of each now let's see both of them in the same code. This code will be similar as above two. Let's take this : // Copy vs Assignment Constructor #include <iostream> #include <s...

After you've enabled migrations (please refer to this example) you are now able to create your first migration containing an initial creation of all database tables, indexes and connections. A migration can be created by using the command Add-Migration <migration-name> This command will c...