List Operator in C++ STL

Sunidhi Bansal
Updated on 05-Mar-2020 09:48:36

332 Views

Given is the task to show the functionality list operator = function in C++ in STL.What is List in STL?List are containers that allow constant time insertion and deletion anywhere in sequence. List are implemented as doubly linked lists. List allow non-contiguous memory allocation. List perform better insertion extraction and moving of element in any position in container than array, vector and deque. In List the direct access to the element is slow and list is similar to forward_list, but forward list objects are single linked lists and they can only be iterated forwards.What is use of operator = ?This ... Read More

Importance of the Collectors Filtering Method in Java 9

raja
Updated on 05-Mar-2020 09:45:18

413 Views

Collectors class is an essential part of the Stream API. In Java 9, a new method: filtering() added to the Collectors class. The Collectors.filtering() method can be used for filtering elements in a stream. It is similar to the filter() method on streams. The filter() method processes the values before they have grouped whereas the filtering() method can be used nicely with the Collectors.groupingBy() method to group the values before the filtering step takes place.Syntaxpublic static Collector filtering(Predicate

Deque Erase in C++

Sunidhi Bansal
Updated on 05-Mar-2020 09:40:46

544 Views

In this article we will be discussing the working, syntax and examples of deque::erase() function in C++.What is a Deque in C++ STL?Deque is the Double Ended Queues that are the sequence containers which provides the functionality of expansion and contraction on both the ends. A queue data structure allow user to insert data only at the END and delete data from the FRONT. Let’s take the analogy of queues at bus stops where the person can be inserted to a queue from the END only and the person standing in the FRONT is the first to be removed whereas ... Read More

Check List Empty and Size in C++ STL

Sunidhi Bansal
Updated on 05-Mar-2020 09:37:38

251 Views

In this article we will be discussing the working, syntax and examples of list::empty() and list::size() function in C++ STL.What is List in STL?List are containers that allow constant time insertion and deletion anywhere in sequence. List are implemented as doubly linked lists. List allow non-contiguous memory allocation. List perform better insertion extraction and moving of element in any position in container than array, vector and deque. In List the direct access to the element is slow and list is similar to forward_list, but forward list objects are single linked lists and they can only be iterated forwards.What is list::empty( ... Read More

Deque Max Size in C++ STL

Sunidhi Bansal
Updated on 05-Mar-2020 09:34:01

303 Views

Given is the task to show the functionality of deque max_size( ) function in C++ STL.What is Deque?Deque is the Double Ended Queues that are the sequence containers which provides the functionality of expansion and contraction on both the ends. A queue data structure allow user to insert data only at the END and delete data from the FRONT. Let’s take the analogy of queues at bus stops where the person can be inserted to a queue from the END only and the person standing in the FRONT is the first to be removed whereas in Double ended queue the ... Read More

List Swap in C++ STL

Sunidhi Bansal
Updated on 05-Mar-2020 09:31:30

652 Views

Given is the task to show the functionality list swap( ) function in C++ in STL.What is List in STL?List are containers that allow constant time insertion and deletion anywhere in sequence. List are implemented as doubly linked lists. List allow non-contiguous memory allocation. List perform better insertion extraction and moving of element in any position in container than array, vector and deque. In List the direct access to the element is slow and list is similar to forward_list, but forward list objects are single linked lists and they can only be iterated forwards.What is swap( )?This function is used ... Read More

Loop Through JSON File with Multiple Keys and Sub-Keys in Python

Sravani S
Updated on 05-Mar-2020 08:14:19

15K+ Views

You can parse JSON files using the json module in Python. This module parses the json and puts it in a dict. You can then get the values from this like a normal dict. For example, if you have a json with the following content −{    "id": "file",    "value": "File",    "popup": {       "menuitem": [          {"value": "New", "onclick": "CreateNewDoc()"},          {"value": "Open", "onclick": "OpenDoc()"},          {"value": "Close", "onclick": "CloseDoc()"}       ]    } }ExampleYou can load it in your python program and loop ... Read More

Loop Over Entries in JSON Using Python

karthikeya Boyini
Updated on 05-Mar-2020 08:11:45

1K+ Views

You can parse JSON files using the json module in Python. This module parses the json and puts it in a dict. You can then get the values from this like a normal dict. For example, if you have a json with the following content −{    "id": "file",    "value": "File",    "popup": {       "menuitem": [       {"value": "New", "onclick": "CreateNewDoc()"},       {"value": "Open", "onclick": "OpenDoc()"},       {"value": "Close", "onclick": "CloseDoc()"}       ]    } }ExampleYou can load it in your python program and loop over its keys ... Read More

Execute Python Multi-Line Statements in One Line at Command Line

Samual Sam
Updated on 05-Mar-2020 08:08:02

2K+ Views

There are multiple ways in which you can use multiline statements in the command line in python. For example, bash supports multiline statements, which you can use like −Example$ python -c ' > a = True > if a: > print("a is true") > 'OutputThis will give the output −a is trueIf you prefer to have the python statement in a single line, you can use the newline between the commands. example$ python -c $'a = Trueif a: print("a is true");'OutputThis will give the output −a is true

Loop Through Multiple Lists Using Python

V Jyothi
Updated on 05-Mar-2020 08:06:15

617 Views

The most straightforward way seems to use an external iterator to keep track. Note that this answer considers that you're looping on same sized lists. examplea = [10, 12, 14, 16, 18] b = [10, 8, 6, 4, 2] for i in range(len(a)):    print(a[i] + b[i])OutputThis will give the output −20 20 20 20 20ExampleYou can also use the zip method that stops when the shorter of a or b stops.a = [10, 12, 14, 16, 18] b = [10, 8, 6] for (A, B) in zip(a, b):    print(A + B)OutputThis will give the output −20 20 20

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