Tutorial by Examples: d

To prevent memory leaks, one should not forget to close an input stream or an output stream whose job is done. This is usually done with a try-catch-finally statement without the catch part: void writeNullBytesToAFile(int count, String filename) throws IOException { FileOutputStream out = null...

You can bind event listeners to the EventSource object to listen to different events channels using the .addEventListener method. EventSource.addEventListener(name: String, callback: Function, [options]) name: The name related to the name of the channel the server is emitting events to. callb...

Save aps.cer to a folder Open "Keychain access" and export the key that is under that certificate to a .p12 file (call it key.p12). To do that right click on it and choose Export. Save it to the same folder as step 1. On export you will be prompted for a password. Make something u...

Major mode Emacs can adapt its behaviour to the specific type of text edited in a buffer. The set of specific Emacs customizations for a particular type of text is called a "major mode". Each buffer has exactly one major mode depending on its content type. Major modes can change the mean...

As seen in previous examples, basic use of this script is: python setup.py install But there is even more options, like installing the package and have the possibility to change the code and test it without having to re-install it. This is done using: python setup.py develop If you want to p...

What is Flink Like Apache Hadoop and Apache Spark, Apache Flink is a community-driven open source framework for distributed Big Data Analytics. Written in Java, Flink has APIs for Scala, Java and Python, allowing for Batch and Real-Time streaming analytics. Requirements a UNIX-like environment,...

JAXB can be used to generate classes from an model defined in XSD. It will then be possible to read XML document made against this XSD directly as java instances and inversly save these instances as XML document. Take the following XSD saved in a file named SimpleModel.xsd <?xml version="...

The Factory method pattern is a creational pattern that abstracts away the instantiation logic of an object in order to decouple the client code from it. When a factory method belongs to a class that is an implementation of another factory pattern such as Abstract factory then it is usually more ap...

GET your REST data and store in a PowerShell object: $Post = Invoke-RestMethod -Uri "http://jsonplaceholder.typicode.com/posts/1" Modify your data: $Post.title = "New Title" PUT the REST data back $Json = $Post | ConvertTo-Json Invoke-RestMethod -Method Put -Uri "h...

GET your REST data and store in a PowerShell object: $Users = Invoke-RestMethod -Uri "http://jsonplaceholder.typicode.com/users" Modify many items in your data: $Users[0].name = "John Smith" $Users[0].email = "[email protected]" $Users[1].name = "Jane S...

Identify the item that is to be deleted and delete it: Invoke-RestMethod -Method Delete -Uri "http://jsonplaceholder.typicode.com/posts/1"

Date FormatSQL StatementSample OutputYY-MM-DDSELECT RIGHT(CONVERT(VARCHAR(10), SYSDATETIME(), 20), 8) AS [YY-MM-DD]SELECT REPLACE(CONVERT(VARCHAR(8), SYSDATETIME(), 11), '/', '-') AS [YY-MM-DD]11-06-08YYYY-MM-DDSELECT CONVERT(VARCHAR(10), SYSDATETIME(), 120) AS [YYYY-MM-DD]SELECT REPLACE(CONVERT(VAR...

These are the available editions of SQL Server, as told by the Editions Matrix: Express: Entry-level free database. Includes core-RDBMS functionality. Limited to 10G of disk size. Ideal for development and testing. Standard Edition: Standard Licensed edition. Includes core functionality and Busi...

In Julia, you can have an Array that holds other Array type objects. Consider the following examples of initializing various types of Arrays: A = Array{Float64}(10,10) # A single Array, dimensions 10 by 10, of Float64 type objects B = Array{Array}(10,10,10) # A 10 by 10 by 10 Array. Each ele...

In Julia, as in many other languages, it is possible to interpolate by inserting values defined by variables into strings. For a simple example: n = 2 julia> MyString = "there are $n ducks" "there are 2 ducks" We can use other types than numeric, e.g. Result = false j...

As mentioned in the Intro to Expressions expressions are a specific type of object in Julia. As such, they have fields. The two most used fields of an expression are its head and its args. For instance, consider the expression MyExpr3 = Expr(:(=), :x, 2) discussed in Creating Expressions. We...

Creating Expressions mentions that expressions are closely related to strings. As such, the principles of interpolation within strings are also relevant for Expressions. For instance, in basic string interpolation, we can have something like: n = 2 julia> MyString = "there are $n ducks&q...

DROP SCHEMA dvr

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' ...

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