msfjarvis
/
msfjarvis.dev
mirror of https://github.com/msfjarvis/msfjarvis.dev.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Remove unfinished and discarded post 

Signed-off-by: Harsh Shandilya <msfjarvis@gmail.com>
This commit is contained in:
Harsh Shandilya 2019-08-30 23:46:51 +05:30
parent f5150fde9b
commit 966590f911
No known key found for this signature in database
GPG Key ID: C2E74282C2133D62
1 changed files with 0 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
content/posts/collections-in-programming-languages.md
View File

@ -1,31 +0,0 @@
+++
date = "2019-07-17"
title = "Collections in programming languages"
slug = "collections-in-programming-languages"
tags = []
categories = []
+++
Collections are a very fundamental and interesting feature in programming. Putting together "many of the same" is important in real world applications such as a Hangman game, as a familiar example.
You need to have an *ordered* collection of letters and blanks that form the word to be guessed, as well as another collection of letters that have been already guessed.
Time for the nitty-gritty now.
> Note: The following post will be using Java/Kotlin's (JVM's?) collections since they seem to have the most types of collections among the programming languages I am proficient in.
For simplicity, I'll be using the Java SE 7 API reference as the baseline for all the explanations here. The discussion itself will strive to remain language-agnostic so please do not be discouraged away if you are not a JVM developer.
### Sets
> A Set, in mathematical terms, is a collection of distinct objects, and is considered an object in its own right.
Let's dive into this.
When we say <span style="text-decoration:underline">_distinct objects_</span>, it simply means that duplication is forbidden. For any two elements `e1` and `e2`, `e1 == e2` can **never** be true in a valid set.
In most languages, sets are also guaranteed to be **ordered**, i.e., the elements shall remain in the order you inserted them initially.
So that was sets. Simple enough right?