Tutorial by Examples: ch

One of the main advantage of std::array as compared to C style array is that we can check the size of the array using size() member function int main() { std::array<int, 3> arr = { 1, 2, 3 }; cout << arr.size() << endl; }

The member function fill() can be used on std::array for changing the values at once post initialization int main() { std::array<int, 3> arr = { 1, 2, 3 }; // change all elements of the array to 100 arr.fill(100); }

SWIFT: Step 1: In your Info.plist add the following attribute: View controller-based status bar appearance and set its value to NO as described in the image below: Step 2: In your AppDelegate.swift file, in didFinishLaunchingWithOptions method, add this code: UIApplication.shared.st...

Once the provisioning profiles are all set, next step in the process of submitting the app is to archive your code. From the dropdown of devices and simulators select option "Generic iOS device". Then, under "Product" menu select option "Archive". In case where the s...

Environment Setup: Download android sdk of API level 17 or more Node.js (https://nodejs.org/) Appium software (http://appium.io/) Selenium jars (http://www.seleniumhq.org/download/) Appium jar (https://search.maven.org/#search%7Cga%7C1%7Cg%3Aio.appium%20a%3Ajava-client) .apk file of the appl...

By default, the escape character is ~. Just go ahead and type ~. in your opened SSH session. After hitting Enter your session will end immediately. Go ahead and try it in any session, it works regardless of the responsiveness of your session.

So far we’ve covered the basic ways to record test scenarios. But one of the fastest and easiest ways to record your performance scripts, which is also free, is to use the BlazeMeter Recorder Chrome extension. These recordings can be run in JMeter or in BlazeMeter. The reason the extension is so us...

List the contents of an archive file without extracting it: tar -tf archive.tar.gz Folder-In-Archive/ Folder-In-Archive/file1 Folder-In-Archive/Another-Folder/ Folder-In-Archive/Another-Folder/file2

from sqlalchemy import create_engine cnx = create_engine('mysql+pymysql://username:password@server:3306/database').connect() sql = 'select * from mytable' df = pd.read_sql(sql, cnx)

While chrome browser is open to any tab (except welcome tabs) you have three options to open Chrome Dev Tools: Keyboard: Type command ⌘+option+i Browser Menu: Click 'Menu' > 'More Tools' > 'Developer Tools' Program Menu (at top of your screen): Click 'View' > 'Developer' > 'Develope...

Assume that I have a file named in.txt: $ cat in.txt a b a c a d I only want to replace the a\nc with deleted, but not a\nb or a\nd. $ sed -e ':loop # create a branch/label named `loop` $!{ N # append the next line of input into the pattern space /\n$/!b...

Use browser.driver instead of driver Use browser.driver.ignoreSynchronization = true Reason: Protractor waits for angular components to load completely on a web-page befor it begins any execution. However, since our pages are non-angular, Protractor keeps waiting for 'angular' to load till the tes...

Before starting with deletion I just want to put some lights on what is a Binary search tree(BST), Each node in a BST can have maximum of two nodes(left and right child).The left sub-tree of a node has a key less than or equal to its parent node's key. The right sub-tree of a node has a key greater ...

:help [subject] attempts to find the "best" match for the argument you supply. The argument "can include wildcards like *, ? and [a-z] (any letter). You can additionally use Vim's command-line completion with CTRL+D: :help spli<Ctrl-D> will display a list of help topics matchi...

String bucketName = "bucket"; List<String> nodes = Arrays.asList("node1","node2"); // IP or hostname of one or more nodes in the cluster Cluster cluster = CouchbaseCluster.create(nodes); Bucket bucket = cluster.openBucket(bucketName); //check for a documen...

For example if the input is: Output should be false: As 4 in the left sub-tree is greater than the root value(3) If the input is: Output should be true

struct tree{ int a; tree* right; tree* left; }; tree* root=NULL; void insert(tree*& in, int b){ if(in){ if(in->a<b) insert(in->right,b); else if(in->a>b) insert(in->left,b); ...

JdbcTemplate also provides convenient methods to execute batch operations. Batch Insert final ArrayList<Student> list = // Get list of students to insert.. String sql = "insert into student (id, f_name, l_name, age, address) VALUES (?, ?, ?, ?, ?)" jdbcTemplate.batchUpdate(sql, n...

For example if the inputs are: Example:1 a) b) Output should be true. Example:2 If the inputs are: a) b) Output should be false. Pseudo code for the same: boolean sameTree(node root1, node root2){ if(root1 == NULL && root2 == NULL) return true; if(root1 == NULL ...

There are two components to the Unicorn data provider: the database-specific implementation, and the Unicorn implementation. The Unicorn implementation is an individual configuration of Unicorn dependencies that get automatic serialization. For example, if you were serializing two presets you'd nee...