Tutorial by Examples: f

Clarification of Erlang doc on Bit Syntax: 4.4 Defaults [Beginning omitted: <<3.14>> isn't even legal syntax.] The default Size depends on the type. For integer it is 8. For float it is 64. For binary it is the actual size of the specified binary: 1> Bin = << 17/integ...

You can pass data directly by assigning the property of the next view controller before you push or present it. class FirstViewController: UIViewController { func openSecondViewController() { // Here we initialize SecondViewController and set the id property to 492 let se...

Create a console application. Install EntityFramework nuget package by running Install-Package EntityFramework in "Package Manager Console" Add your connection string in app.config file , It's important to include providerName="System.Data.SqlClient" in your connection. Cre...

First, determine the source file for this particular driver. Found it at drivers/usb/serial/ftdi_sio.c. ./scripts/get_maintainer.pl drivers/usb/serial/ftdi_sio.c And the results: Johan Hovold <[email protected]> (maintainer:USB SERIAL SUBSYSTEM) Greg Kroah-Hartman <gregkh@linuxfounda...

With the release of sass 3.3 and plus version the @if and else conditions syntax got same. we can now use expressions with not only scss but also sass. sass syntax @for $i from 1 through 3 { .item-#{$i} { width: 2em * $i; } } Compiled to .item-1 { width: 2em; } .item-2 { width: 4em...

Elasticsearch provides data manipulation & data searching capabilities in almost real time. under this example, we have update, delete & batch processing operations. Updating the same document. Suppose we have already indexed a document on /car/external/1 . Then running the command for i...

In the beginning there were callbacks, and callbacks were ok: const getTemperature = (callback) => { http.get('www.temperature.com/current', (res) => { callback(res.data.temperature) }) } const getAirPollution = (callback) => { http.get('www.pollution.com/current', (res) ...

It is possible to specify a text hint when using EditTexts. Text hints are useful for conveying to the user what they should type in the EditText. In XML: <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="use...

In case of big data sets, the call of grepl("fox", test_sentences) does not perform well. Big data sets are e.g. crawled websites or million of Tweets, etc. The first acceleration is the usage of the perl = TRUE option. Even faster is the option fixed = TRUE. A complete example would be: ...

The old-school method for running another script from batch is to echo the script into another location, and then run it. This method can be represented like this: @echo off rem VBS below echo your vbs > TempVBS.vbs echo other vbs>>TempVBS.vbs rem End of VBS cscript //nolog...

In order to load data from a MongoDB database into an R dataframe, use the library MongoLite: # Use MongoLite library: #install.packages("mongolite") library(jsonlite) library(mongolite) # Connect to the database and the desired collection as root: db <- mongo(collection = &quo...

Methods used: .DriveExists(strDrive) returns (True/False) .FileExists(strFile) returns (True/False) .FolderExists(strFolder) returns (True/False) The following code checks for the existence of a file using the "FileExists" method of a file system object. For checking the existence of...

Methods used: .DeleteFolder(FileSpec, Force (True/False)) .CreateFolder(Path) .DeleteFile(FileSpec, Force (True/False)) The following example illustrates the Deletion and creation of a folder using the methods "DeleteFolder" and "CreateFolder". Code: Dim strFolderPath, ob...

Methods Used: .CopyFile(Source, Dest [,Overwrite (True/False)] .CopyFolder(Source, Dest [,Overwrite (True/False)] The following code illustrates the use of CopyFile method to copy a file to a new location. The same thing can be achieved for the folders by using the CopyFolder method. Code: Di...

Methods Used: .MoveFile(Source, Dest) .MoveFolder(Source, Dest) The following code illustrates the use of MoveFile method to Move a file to a new location. The same thing can be achieved for the folders by using the MoveFolder method. Code: Dim objFso, strSourcePath, strDestPath strSourcePat...

Methods used: .GetFolder(strPath) - Returns an object referring to the path We can set an object reference to a folder using the getFolder method and perform different operations on them. Code: Dim strFolderPath, objFso, objFolder strFolderPath = "C:\Users\GS\Desktop\LogsFolder" Se...

Methods Used: .GetFile(strPath) - Returns an object referring to a file. We can set an object reference to a file using the getFile method and perform different operations on them. Code: Dim strFilePath, objFso, objFile strFilePath = "C:\Users\GS\Desktop\LogsFolder\file.txt" Set ob...

As you would know, Hadoop can be run in the local environment in 3 different modes : Local Mode Pseudo Distributed Mode Fully Distributed Mode (Cluster) Typically you will be running your local hadoop setup in Pseudo Distributed Mode to leverage HDFS and Map Reduce(MR). However you cannot de...

EQ checks if two values have the same address of memory: in other words, it checks if the two values are are actually the same, identical object. So, it is can be considered the identity test, and should be applied only to structures: conses, arrays, structures, objects, typically to see if you ...

We can use the componentchanged event to listen for changes to the entity: entity.addEventListener('componentchanged', function (evt) { if (evt.detail.name === 'position') { console.log('Entity has moved from', evt.detail.oldData, 'to', evt.detail.newData, '!'); } });