Download and Install Python
Download and Install Pycharm
Install Jupyter
> pip install jupyter
Install Transformers
> pip install transformers
> pip install transformers[sentencepiece]
Install Pytorch (Preferred for dev)/TensorFlow (preferred for prod)
> pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu118
CRUD Operations:
Create:
db.products.insert({item:"TV",aqty:200,soldqty:1200,avail:true})
db.createCollection("Name")
Read:
db.products.find({<Condition>},{<Projection>})
Get single document - db.products.findOne()
Get all documents - db.products.find()
Get documents based on filters - db.products.find({aqty:0})
Get documents with particular fields - db.products.find({aqty:0},{item:1,soldqty:1})
Reading the data with limit(), sort(), skip() functions:
db.products.find().sort({aqty:1}).limit(5)
db.products.find().sort({aqty:1}).skip(5)
Operators: in, ne, nin, lt, gt, lte, gte, or, and
IN - db.products.find({aqty:{$in:[0,200]}})
Less Than & And - db.products.find({aqty:{$lt:200},soldqty:1800})
OR - db.products.find({$or:[{aqty:200},{soldqty:3000}]})
db.products.find({$or:[{aqty:{$lt:200}},{soldqty:{$gt:1800}}]})
Update:
add/update property - db.products.updateMany({},{$set:{price:100}})
remove property - db.products.updateMany({}, {$unset: {price: 0}})
Delete:
collection - db.test.drop()
single row - db.products.deleteOne({item:'TV'})
multiple row - db.products.deleteMany({prices:{$lt: 200}})
all rows - db.products.deleteMany({})
Indexes:
db.products.createIndex({price:1})
Aggregation:
https://www.mongodb.com/developer/products/mongodb/cheat-sheet/
JavaScript is single threaded language.
Synchronous programming is execution of functions in order.
Asynchronous programming is executing a long running process outside the main thread. It does not block code execution on main thread. Although it is achieved usually by running asynchronous function on separate thread. Though javascript is a single threaded language it supports aysnchronous behaviour, to understand how we need to understand JS runtime.
