Tutorial by Examples: the

Visit http://sheets.google.com to try out now! Create a new spreadsheet and start playing around.

Suppose you are creating a function that requires no arguments when it is called and you are faced with the dilemma of how you should define the parameter list in the function prototype and the function definition. You have the choice of keeping the parameter list empty for both prototype and d...

One option for doing this is to export the pipe from within the package itself. This may be done in the 'traditional' zzz.R or utils.R files that many packages utilise for useful little functions that are not exported as part of the package. For example, putting: #' Pipe operator #' #' @name %&gt...

Array ( [0] => Array ( [id] => 13 [category_id] => 7 [name] => Leaving Of Liverpool [description] => Leaving Of Liverpool [price] => 1.00 [virtual] => 1 [active] =...

REPORT z_template. CLASS lcl_program DEFINITION ABSTRACT FINAL. PUBLIC SECTION. CLASS-METHODS start_of_selection. CLASS-METHODS initialization. CLASS-METHODS end_of_selection. ENDCLASS. CLASS lcl_program IMPLEMENTATION. METHOD initialization. ENDMETHOD. ...

1.1.2 (This content is only relavant for versions 1.1.2 and up) From versions 1.1.2 and up, you can set the delay to select a new chip before refocusing on the input. Use the md-chip-append-delay attribute to set it (in milliseconds): Example: <md-chips md-chip-append-delay="500" n...

The advantage of immutability comes with concurrency. It is difficult to maintain correctness in mutable objects, as multiple threads could be trying to change the state of the same object, leading to some threads seeing a different state of the same object, depending on the timing of the reads and ...

Lets have the following file called library.cmd : @echo off echo -/-/- Batch Functions Library -/-/- :function1 echo argument1 - %1 goto :eof To execute only the :function1 without the code of the rest of the file you should put a label :function1 in the caller bat and use it lik...

The easiest way to connect via curl to a different server is to alter the hosts file on your machine. On Linux and Unix systems, the hosts file is located in /etc/hosts, while on Windows systems it will be located in c:\windows\system32\drivers\etc\hosts. Once you open the file with a text editor ...

The "Host:" header is a normal way an HTTP client tells the HTTP server which server it speaks to. By passing custom modified "Host:" header you can have the server respond with the content of the site, even if you didn't actually connect to the host name. For example, if you ha...

interface Foo { fun example() } class Bar { fun example() { println("Hello, world!") } } class Baz(b : Bar) : Foo by b Baz(Bar()).example() The example prints Hello, world!

All of the other buttons you can create, are buttons that link to a GitHub repository and prompts the user to complete a certain action. These buttons can do actions such as: Watch a repository Star a repository Fork a repository Download a repository List an Issue with a repository Here's...

You can also use tee command to store the output of a command in a file and redirect the same output to another command. The following command will write current crontab entries to a file crontab-backup.txt and pass the crontab entries to sed command, which will do the substituion. After the substi...

You can pipe your output to multiple files (including your terminal) by using tee like this: $ ls | tee file1 file2 file3

By default tee command overwrites the file. You can instruct tee to append to the file using the –a option as shown below. $ ls | tee –a file

It was most frequent question that can a same thread can be run twice. The answer for this is know one thread can run only once . if you try to run the same thread twice it will execute for the first time but will give error for second time and the error will be IllegalThreadStateException . exam...

app: ... environment: - var=value

Request:"http://example.com" GET / HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Accept: text/html,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-aliv...

Request:"http://example.com" GET / HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Accept: text/html,application/xml;q=0.9,*/*;q=0.8 Accept-Encoding: * Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate C...

A simple OGL 4.0 GLSL shader program that shows how to map a 2D texture on a mesh. The program is executed with a phyton script. To run the script, PyOpenGL and NumPy must be installed. The texture matrix defines how the texture is mapped on the mesh. By manipulating the texture matrix, the textu...