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Sahih al-Bukhari (সহীহ বুখারী) is a free Hadith application for android. This application is advertisement free. Download now https://play.google.com/store/apps/details?id=com.akramhossin.bukharisharif
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Fuzzy rank based relevant search in PostgreSQL.
Fuzzy rank based relevant search in PostgreSQL.
In this article, I'll share how I've improved a search feature by ranking fuzzy string matches by applying
to_tsvector, phraseto_tsquery, ts_rank, similarity to the searched term.
let's say we need to search list of labs which name contains the character combination of 'medwhite'.
I'm saying contains since there might be names that are not an
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TypeORM: How to bind parameters in where clause for SelectQueryBuilder
Parameters used for
As placeholders for the dynamic values in the query
To prevent SQL injection
Example
let businessArtists: Artists[] = await getRepository(Artists)
.createQueryBuilder('artists')
.leftJoin(LocationArtists, 'location_artists', 'artists.artist_id = location_artists.artist_id')
.where("artists.busi
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How to use getManyAndCount function in SelectQueryBuilder
TypeScript code snippets using typeorm.SelectQueryBuilder.getManyAndCount
const [models, pageCount] = await getRepository(Businesses)
.createQueryBuilder('businesses')
.leftJoinAndSelect("businesses.locations", "locations")
.where("is_active = 1")
.andWhere("is_deleted = 0")
.skip(offset)
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Hacker Rank: Day 14: Scope
Objective
Today we’re discussing scope.
The absolute difference between two integers, a and b, is written as |a – b|. The maximum absolute difference between two integers in a set of positive
integers, elements, is the largest absolute difference between any two integers in elements.
The Difference class is started for you in the editor. It has a private integer array (elements) for storin
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Hacker Rank: Day 13: Abstract Classes
Objective
Today, we will extend what we learned yesterday about Inheritance to Abstract Classes. Because this is a very specific object oriented concept,
submissions are limited to the few languages that use this construct.
Task
Given a Book class and a Solution class, write a MyBook class that does the following:
Inherits from Book
Has a parameterized constructor taking these 3 param
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Hacker Rank: Day 12: Inheritance
Objective
Today, we’re delving into Inheritance.
Task
You are given two classes, Person and Student, where Person is the base class and Student is the derived class.
Completed code for Person and a declaration for Student are provided for you in the editor.
Observe that Student inherits all the properties of Person.
Complete the Student class by writing the following:
A Student class
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Hacker Rank: Day 11: 2D Arrays
Objective
Today, we are building on our knowledge of arrays by adding another dimension.
ContextGiven a 6 x 6 2D Array, A:
1 1 1 0 0 0
0 1 0 0 0 0
1 1 1 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
We define an hourglass in A to be a subset of values with indices falling in this pattern in A‘s graphical representation:
a b c
d
e f g
There are 16 hourglasses in A, and an hourglass
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Hacker Rank: Day 10: Binary Numbers
Objective
Today, we’re working with binary numbers.
Task
Given a base-10 integer, n, convert it to binary (base-2). Then find and print the base-10 integer denoting the maximum number of consecutive 1‘s in n‘s
binary representation. When working with different bases, it is common to show the base as a subscript.
Example
n = 125
The binary representation of 12510 is 11111012. In base 1
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ChatGPT: A brief look at the AI chat bot
What is ChatGPT?
ChatGPT is released by Open AI, is it a text-based artificial intelligence tool.
ChatGPT is powered by large amounts of data and computing techniques to make predictions to string words together in a meaningful way.
ChatGPT useful for a wide range of tasks, from creating software to generating business ideas to writing a wedding toast.
ChatGPT is just the first of many simil
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Hacker Rank: Day 9: Recursion 3
Recursive Method for Calculating Factorial
factorial(N) = {1/n X factorial(N-1) N ≤ 1/otherwise
Function Description
Complete the factorial function in the editor below.
Be sure to use recursion.
factorial has the following paramter:
int n: an integer
Returns
int: the factorial of n
Note: If you fail to use recursion or fail to name your recursive function factorial or Fac
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Postgresql find foreign key references and reset primary key serial without truncate table
Postgresql find foreign key references and reset primary key serial without truncate table
in this blog post i will try to explain how to find Postgresql foreign key references and reset primary key serial.
now question is why we need to find Postgresql foreign key references and reset primary key serial ?
sometime we have a scenerio where we need to reset the primary key for business need at
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Hacker Rank: Day 8: Dictionaries and Maps
Task:
Given n names and phone numbers, assemble a phone book that maps friends' names to their respective phone numbers.
You will then be given an unknown number of names to query your phone book for.
For each named queried, print the associated entry from your phone book on a new line in the form name=phoneNumber;
if an entry for name is not found, print Not found instead.
Note: Your p
