Day11

\\ Lets Get Started! \\

Git and GitHub {8} _

Initializing Git :

• Suppose I have a very good idea of a software (or Web App.) that i want to create, so for it's development lets create a folder named "MySoftware".

• It's nesting is as follows_ C:\Users\ASUS\Documents\Uup8qrR_iRP7\MySoftware

• Now i want to initialize this repository.(a local repository).

What gonna happen if i try and run any Git command in this folder first?

• Open Bash terminal(Ubuntu) and go to that folder with the commands.

• path will be :/mnt/c/Users/ASUS/Documents/Uup8qrR_iRP7/MySoftware$

• copy this path & keep it inside a doc or txt file for quick access purpose. (without $ in it)

  • Another alternate way would be to Raight click opening GitBash. (Open Git Bash here).

• create a test.txt file using touch test.txt command.

• and by trying to run add Git command for this file (i.e. git add test.txt) Won't work at this point as we have to first initialize this directory for Git.

• by runnig git init command in the pwd will create a .git folder inside there, which is for keeping track of every changes (by Git), now that initialized folder will be as a master branch..

HarvardX CS50T {5}_

CS50's Understanding Technology. Resource Or Reference : HarvardX CS50T

Multimedia :

Introduction :

• Odds are you use it everyday, but what is it?

#Audio :

• Computers are good at recording, playing back, and generating audio

• Uses different file formats

  • File formats are just a way of storing 0s and 1s on disk so that certain software knows how to interpret it

• MIDI

  • Way of storing musical notes for certain songs

  • Can do this for different instruments

    • Programs can render the notes for these instruments

• GarageBand

  • Included with macOS

    

• This is the Star Wars theme in # MIDI

  • Doesn’t sound quite as good as the actual version

  • Computer synthesizes the notes

    • Not an actual recording

    • Computer interprets notes in the MIDI file

• MIDI is common in the digital workspace among musicians who wish to share music with each other.

• Humans typically like to hear music preformed and recorded by humans

  • File formats for recorded music include:

    • AAC

    • MIDI

    • MP3

    • WAV

• # WAV is an early sound format, but still used

  • Uncompressed data storage allowing high quality

• # MP3

  • File format for audio that uses compression

    • Significantly reduce how many bits are necessary to store a song

    • Discards 0s and 1s that humans can’t necessarily hear

      • True audiophiles may disagree

    • Trade off between optimizing storage space and sacrificing quality

    • This compression is said to be # lossy

      • Losing the quality in the compression process

• # AAC

  • Similar to MP3

  • May see when you download a song from iTunes

• Streaming services such as Spotify don’t transfer a file to you but rather stream bits of information to you

• How do we think about the # quality of these formats?

  • # Sampling frequency

    • Number of times per seconds we take a digital snapshot of what a person would hear

  • # Bit depth

    • Number of bits used for these individual snapshots

  • Sampling frequency x bit depth = number of bits necessary to store one second of music

  • Audio file formats allow you to modify what these parameters are

Other Developments {11} _

Recap, Ques, & Other Notes :

• Recaps.

  • #: git commit --help

• Ques.

  • After adding a file onto the staging area and thereby its being tracked by the Git, but what if we remove it completely using shell command? () []

  • staging area vs source control

  • touch alternative Git command ? () []

  • some git commands those somehow related to/with caching of the files or source or context or contents? () []

  • meaning of single dash - and double dash -- in/before the flag part in command line?

  • can unstaged files be committed? () []

• Other Notes.

  • Command prompt Vs Source tree(GUI)_ : (From Day10)

  • #Notes_

    • writing self notes at very last under other notes seems feasible n practecal.

    • notes title will be always under a # tag

    • () [✔] : shows did covered but not jotted down on blog post etc.

      • here (this) : will direct where to look for

      • () [] : that is both empty : means that, will be attempted soon during revision (s) or so

    • Day-Number will be always mentioned at the start despite heading

thats it for today

tc and happy Learning and Earning!