C# Concurrent classes are provided through System.Collections.Concurrent Concurrent classes: for thread-safe operations i. e. Now multiple threads can access the Collections without creating problems Concurrent classes: BlockingCollection ConcurrentBag ConcurrentStack ConcurrentQueue ConcurrentDictionary Partitioner Partitioner OrderablePartitioner
Category: ব্লগ । Blog
ব্লগ । Blog
May 19
Core building blocks across Javascript, PHP, C++, Java, Python, and Ruby
Core building blocks across Javascript, PHP, C++, Java, Python, and Ruby: Ref: https://codesensei.medium.com/core-building-blocks-and-which-programming-language-to-study-first-446977d119a8
May 18
K-Means Clustering
Click on the images to see them clearly #!/usr/bin/env python coding: utf-8 In[1]: k-means clustering from numpy import unique from numpy import where from sklearn.datasets import make_classification from sklearn.cluster import KMeans from matplotlib import pyplot import numpy as np import pandas as pd import seaborn as sns import matplotlib.pyplot as plt get_ipython().run_line_magic(‘matplotlib’, ‘inline’) import pandas …
May 17
C# Application using VS Code
You need C# Dev Kit. .Net Install Tools (.Net Runtime Install Tools), .Net SDK, and extensions that these extensions also depend on. Then >.net option will give you the project create, open, build or similar features – Check Image below) Having Visual Studio is the best option (and in Windows Environment under VM (Parallels or …
May 13
Oracle: Error management and exception handling in PL/SQL
Raise Error in Oracle RAISE VALUE_ERROR; Raise Application Error in Oracle Create custom exception and raise it. Handle Exception You could also insert into error log table and RAISE Reference: https://blogs.oracle.com/connect/post/error-management
May 12
UML Collaboration Diagram
"Collaboration diagrams (known as Communication Diagram in UML 2.x) are used to show how objects interact to perform the behavior of a particular use case, or a part of a use case. Along with sequence diagrams, collaboration are used by designers to define and clarify the roles of the objects that perform a particular flow …
May 12
Software Engineering: Propositional Logic
Ref: Software Engineering Course: https://www.cs.ox.ac.uk/people/michael.wooldridge/teaching/soft-eng/ https://www.cs.ox.ac.uk/people/michael.wooldridge/teaching/soft-eng/lect07-4up.pdf
May 12
Oracle PL/SQL: If-Then-Else, For Loop, While Loop
How it works: if, elsif, else (then) (Click on the images to see them clearly) Ref: https://docs.oracle.com/cd/B13789_01/appdev.101/b10807/13_elems024.htm Example: Ref: https://docs.oracle.com/cd/B13789_01/appdev.101/b10807/13_elems024.htm Oracle: CASE, WHEN, THEN Simple: Searched: ” Else: Reverse For Loop Ref: For Loop Examples in Oracle https://docs.oracle.com/cd/E11882_01/appdev.112/e25519/controlstatements.htm#BABEFFDC Oracle While Loop While loop example from the referenced url DECLARE done BOOLEAN := FALSE; BEGIN WHILE …
May 12
Oracle Sub Types for Data Types: Exception Block
An unconstrained subtype has the same set of values as its base type, so it is only another name for the base type. Syntax: SUBTYPE subtype_name IS base_type Example: SUBTYPE "DOUBLE PRECISION" IS FLOAT SUBTYPE Balance IS NUMBER; Constrained SubType SUBTYPE Balance IS NUMBER(8,2); Oracle Exception Block Example: Ref: https://docs.oracle.com/cd/B13789_01/appdev.101/b10807/07_errs.htm
May 12
Misc. Oracle: Data Types: Why a Data Type.
Ref: https://docs.oracle.com/cd/B13789_01/appdev.101/b10807/02_funds.htm https://stackoverflow.com/questions/7425153/reason-why-oracle-is-case-sensitive Oracle Data Types and Allowed Sizes: https://docs.oracle.com/cd/E11882_01/appdev.112/e25519/datatypes.htm#LNPLS99943 Oracle SIMPLE_FLOAT vs SIMPLE_DOUBLE Ref: https://docs.oracle.com/cd/B28359_01/appdev.111/b28370/datatypes.htm#CJAEAEJG PLS_Integer vs Number "The PLS_INTEGER data type has these advantages over the NUMBER data type and NUMBER subtypes: PLS_INTEGER values require less storage. PLS_INTEGER operations use hardware arithmetic, so they are faster than NUMBER operations, " Ref: https://docs.oracle.com/cd/E11882_01/appdev.112/e25519/datatypes.htm#LNPLS319 Hardly …
