Tutorial by Examples: p

Iterators utilize a form of the for loop known as the generic for loop. The generic form of the for loop uses three parameters: An iterator function that gets called when the next value is needed. It receives both the invariant state and control variable as parameters. Returning nil signals term...

Step by Step Guide :- Step 1 :- Set constraint to UIView Leading. 2) Top. 3) Trailing. (From mainview) Step 2 :- Set constrain to Label 1 Leading 2) Top 3) Trailing (From it's superview) Step 3 :- Set constraint to Label 2 Leading 2) Top 3) Trailing (From its superview) Step...

Without a try catch block, undefined functions will throw errors and stop execution: undefinedFunction("This will not get executed"); console.log("I will never run because of the uncaught error!"); Will throw an error and not run the second line: // Uncaught ReferenceError:...

Think of the mediator pattern as the flight control tower that controls planes in the air: it directs this plane to land now, the second to wait, and the third to take off, etc. However no plane is ever allowed to talk to its peers. This is how mediator works, it works as a communication hub among ...

It is also possible to pass your custom object to other activities using the Bundle class. There are two ways: Serializable interface—for Java and Android Parcelable interface—memory efficient, only for Android (recommended) Parcelable Parcelable processing is much faster than serializable....

.Rprofile is a file containing R code that is executed when you launch R from the directory containing the .Rprofile file. The similarly named Rprofile.site, located in R's home directory, is executed by default every time you load R from any directory. Rprofile.site and to a greater extend .Rprofil...

gradlew tasks -- show all tasks Android tasks ------------- androidDependencies - Displays the Android dependencies of the project. signingReport - Displays the signing info for each variant. sourceSets - Prints out all the source sets defined in this project. Build tasks -----------...

Suppose we have a JSON string： ["first","second","third"] We can parse this JSON string into a String array : Gson gson = new Gson(); String jsonArray = "[\"first\",\"second\",\"third\"]"; String[] strings = gson.fromJson(j...

For this example to work you'll need a JDBC driver compatible to the system the database is running on. An opensource one that allows you to connect to DB2 databases on an IBM System i can be found here: JT400 Even though this example is DB2 specific, it works for almost every other system if you e...

@Provider public class IllegalArgumentExceptionMapper implements ExceptionMapper<IllegalArgumentException> { @Override public Response toResponse(IllegalArgumentException exception) { return Response.serverError().entity("Invalid input: " + exception.getMessage(...

add: add the specified files on the next commit addremove: add all new files, delete all missing files backout: reverse effect of earlier changeset commit, ci: commit the specified files or all outstanding changes copy, cp: mark files as copied for the next commit forge...

annotate, blame: show changeset information by line for each file bisect: subdivision search of changesets cat: output the current or given revision of files diff: diff repository (or selected files) grep: search for a pattern in specified files and revisions log, history: show revision histo...

archive: create an unversioned archive of a repository revision bundle: create a changegroup file clone: make a copy of an existing repository export: dump the header and diffs for one or more changesets graft: copy changes from other branches onto the current branch incoming: show new change...

FNR contains the number of the input file row being processed. In this example you will see awk starting on 1 again when starting to process the second file. Example with one file $ cat file1 AAAA BBBB CCCC $ awk '{ print FNR }' file1 1 2 3 Example with two files $ cat file1 AAAA BBBB...

In Scala (in contrast to Java and most other languages), if is an expression instead of a statement. Regardless, the syntax is identical: if(x < 1984) { println("Good times") } else if(x == 1984) { println("The Orwellian Future begins") } else { println("Po...

Create a new repository or clone an existing one. Create a new branch called gh-pages without any history $ git checkout --orphan gh-pages # ensure you are in the correct directory then, # remove all files from the old working tree $ git rm -rf Add an index.html file to the root of t...

1. Add a platform target iOS: $ ionic platform add ios Android: $ ionic platform add android Windows: $ ionic platform add windows 2. Build your app iOS: $ ionic build ios Android: $ ionic build android Windows: $ ionic build windows Live Reload App During Development...

When you have a Stream you need to map but want to preserve the initial values as well, you can map the Stream to a Map.Entry<K,V> using a utility method like the following: public static <K, V> Function<K, Map.Entry<K, V>> entryMapper(Function<K, V> mapper){ retu...

Functions which return a character vector Base R has two functions for invoking a system command. Both require an additional parameter to capture the output of the system command. system("top -a -b -n 1", intern = TRUE) system2("top", "-a -b -n 1", stdout = TRUE) ...

var MY_AJAX_ACTION_URL = "path/to/controller.php"; var table = $('#user_list_table').DataTable({ "autoWidth": true, "paging": true, "searching": true, "ordering": true, "language": { ...