Tutorial by Examples: al

Run the following command, replacing username with the username, to clone all of the GitHub repositories for that user to the current directory. curl "https://api.github.com/users/username/repos?page=1&per_page=100" | grep -e 'git_url*' | cut -d \" -f 4 | xargs -L1 git clone T...

Testing without installing For new users who wish to start testing Coq without installing it on their machine, there is an online IDE called JsCoq (presentation here). The package sub-window allows testing various well-known additional packages. Installation The download page contains installers ...

The best way to get started with Salesforce is to get your own Developer Edition. Developer Edition (often referred to as a "DE org") is a fully-featured development environment with limits on data and users. Developer Edition is where you can get familiar with the environment, try out st...

In order to use libraries in CodeIgniter, you need to create a library. class Pro { function show_hello_world() { return 'Hello World'; } } In this library, which is called is pro.php, this file must be added to the following path. Path: \xampp\htdocs\project\application\librarie...

[timer invalidate]; timer = nil; This will stop the timer from firing. Must be called from the thread the timer was created in, see Apple's notes: You must send this message from the thread on which the timer was installed. If you send this message from another thread, the input source associ...

[timer fire]; Calling the fire method causes an NSTimer to perform the task it would have usually performed on a schedule. In a non-repeating timer, this will automatically invalidate the timer. That is, calling fire before the time interval is up will result in only one invocation. In a repeat...

Subtracting the values of two pointers to an object results in a signed integer *1. So it would be printed using at least the d conversion specifier. To make sure there is a type being wide enough to hold such a "pointer-difference", since C99 <stddef.h> defines the type ptrdiff_t. ...

Syntax $this->load->model('model_name'); $this->model_name->method_name(); Practice $this->load->model('home_model'); $this->home_model->get_data();

Javascript engines first look for variables within the local scope before extending their search to larger scopes. If the variable is an indexed value in an array, or an attribute in an associative array, it will first look for the parent array before it finds the contents. This has implications wh...

You can evaluate any valid C# code: int value = await CSharpScript.EvaluateAsync<int>("15 * 89 + 95"); var span = await CSharpScript.EvaluateAsync<TimeSpan>("new DateTime(2016,1,1) - DateTime.Now"); If type is not specified, the result is object: object value = ...

# example data DT = as.data.table(mtcars, keep.rownames = TRUE) Editing a column Use the := operator inside j to create new columns or modify existing ones: DT[, mpg_sq := mpg^2] Editing on a subset of rows Use the i argument to subset to rows "where" edits should be made: DT[1:...

To use just the time part of a Date use LocalTime. You can instantiate a LocalTime object in a couple ways LocalTime time = LocalTime.now(); time = LocalTime.MIDNIGHT; time = LocalTime.NOON; time = LocalTime.of(12, 12, 45); LocalTime also has a built in toString method that displays the for...

xml_import_example.info.yml type: module name: XML import example package: Examples description: "This module helps understanding the Batch API and Queue API with an XML import example" core: 8.x xml_import_example.permissions.yml import content from xml: title: 'Import content...

Just as the random forest algorithm may be applied to regression and classification tasks, it can also be extended to survival analysis. In the example below a survival model is fit and used for prediction, scoring, and performance analysis using the package randomForestSRC from CRAN. require(rand...

survival is the most commonly used package for survival analysis in R. Using the built-in lung dataset we can get started with Survival Analysis by fitting a regression model with the survreg() function, creating a curve with survfit(), and plotting predicted survival curves by calling the predict m...

Go to https://www.arduino.cc/en/Main/Software Click the "Windows Installer" link Follow the instructions

Open a terminal and run: sudo dnf install arduino Open the Arduino application, or type arduino into the terminal

Open a terminal and run: sudo apt-get install arduino Open the Arduino application, or type arduino into the terminal

zf{motion} creates a fold that covers the text that "motion" would cover. {count}zF creates a fold that covers "count" lines. {range}fo[ld] creates a fold for the lines in the provided range. All three commands are valid only when foldmethod is set to manual or marker. In ...

library(RODBC) con <- odbcDriverConnect("driver={Sql Server};server=servername;trusted connection=true") dat <- sqlQuery(con, "select * from table"); close(con) This will connect to a SQL Server instance. For more information on what your connection string should loo...