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Complete DevOps Roadmap - Beginner to Advanced
DevOps is considered a set of practices that combines the abilities of Software Development i.e Dev and IT Operations i.e Ops together, which results in delivering top-not...
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Lodash _.isArrayLike() Method
Lodash _.isArrayLike() method checks if the value is Array-like. A value is considered array-like if it's not a function and has a value.length that's an integer greater t...
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Web Technologies
JavaScript
JavaScript-Lodash
Lodash _.Intersection() Method
Lodash _.intersection() method is used to take the intersection of one or more arrays. It is the same as the intersection in set theory.Syntax:_.intersection([arrays]);Par...
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Web Technologies
JavaScript
JavaScript-Lodash
Lodash Array
How to use unordered_map efficiently in C++
Pre-requisite: unordered_set, unordered_mapC++ provides std::unordered_set and std::unordered_map to be used as a hash set and hash map respectively. They perform insertio...
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C++
cpp-unordered_map
HTML DOM TreeWalker previousSibling() Method
The TreeWalker previousSibling() method moves the current Node to its previous sibling if any and returns the found sibling. If no such child exists in the document, this ...
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Web Technologies
JavaScript
HTML-DOM
HTML
D3.js precisionPrefix() Function
The precisionPrefix() function of D3.js is used to return a specified precision, in turn, to be used with locale.formatPrefix.Syntax:d3.precisionPrefix(step, value);Parame...
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Web Technologies
JavaScript
D3.js
JavaScript TypeError - Can't assign to property "X" on "Y": not an object
This JavaScript exception can't assign to property occurs in strict-mode only and this error occurs If the user tries to create a property on any of the primitive values l...
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Web Technologies
JavaScript
JavaScript-Errors
Difference between HTML and CSS
HTML HTML stands for Hyper Text Markup Language and it is the language that is used to define the structure of a web page. HTML is used along with CSS and Javascript to de...
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Web technologies
Web Technologies
CSS-Basics
HTML-Basics
HTML
CSS
Python - Sort dictionary by Tuple Key Product
Given dictionary with tuple keys, sort dictionary items by tuple product of keys.Input : test_dict = {(2, 3) : 3, (6, 3) : 9, (8, 4): 10, (10, 4): 12}Output : {(2, 3) : 3,...
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Python
Python Programs
Python dictionary-programs
Python tuple-programs
Create Inverted Index for File using Python
An inverted index is an index data structure storing a mapping from content, such as words or numbers, to its locations in a document or a set of documents. In simple word...
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Python
python-file-handling
Python file-handling-programs
Minimum number of operations required to obtain a given Binary String
Given a binary strings S of length N, the task is to obtain S from a string, say T, of length N consisting only of zeroes, by minimum number of operations. Each operation ...
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Strings
Greedy
Searching
Mathematical
Competitive Programming
binary-string
DSA
PostgreSQL - Index Types
In this article, we will look into the index types in PostgreSQL and how to use them appropriately.PostgreSQL has 6 primary index types:B-tree indexesHash indexesGIN index...
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PostgreSQL
postgreSQL-indexes
PostgreSQL - Trigger
A PostgreSQL trigger is a function invoked automatically whenever an event associated with a table occurs. An event could be any of the following: INSERT, UPDATE, DELETE o...
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PostgreSQL
postgreSQL-triggers
PostgreSQL - DROP INDEX
In PostgreSQL, the DROP INDEX statement to remove an existing index.Syntax:DROP INDEX [ CONCURRENTLY][ IF EXISTS ] index_name [ CASCADE | RESTRICT ];Let's analyze the ab...
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PostgreSQL
postgreSQL-indexes
PostgreSQL - Disabling a Trigger
In PostgreSQL, there is no specific statement such as DISABLE TRIGGER for disabling an existing trigger. However, one can disable a trigger using the ALTER TABLE statement...
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PostgreSQL
postgreSQL-triggers
PostgreSQL - ALTER TRIGGER
In PostgreSQL, to modify the trigger, you use ALTER TRIGGER statement. This statement is a PostgreSQL extension of the SQL standard. The syntax of the ALTER TRIGGER statem...
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PostgreSQL
postgreSQL-triggers
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