大约有 47,000 项符合查询结果（耗时：0.0641秒） [XML]
Change from SQLite to PostgreSQL in a fresh Rails project
I have a rails app that's databases are in SQLite (The dev and production). Since I am moving to heroku, I want to convert my database to PostgreSQL.
...
Design Patterns web based applications [closed]
... represented by a Servlet which (in)directly creates/uses a specific Model and View based on the request. The Model is to be represented by Javabean classes. This is often further dividable in Business Model which contains the actions (behaviour) and Data Model which contains the data (information)....
How to handle command-line arguments in PowerShell
What is the "best" way to handle command-line arguments?
1 Answer
1
...
Conceptually, how does replay work in a game?
...rame number at which it was received) along with the initial seeds of any random number generators. To replay the game, you reset your PRNGs using the saved seeds and feed the game engine the same sequence of input (synchronized to the frame numbers). Since many games will update the game state ba...
Create Django model or update if exists
...
@OmkarDeshpande identifier is just an example; you can pass in any valid django query, such as Person.objects.get_or_create(a=a, b=b, c=c, defaults={"name": name})
– Zags
Mar 14 '18 at 16:35
...
Code for decoding/encoding a modified base64 URL
I want to base64 encode data to put it in a URL and then decode it within my HttpHandler.
5 Answers
...
How can I use UUIDs in SQLAlchemy?
...
The sqlalchemy postgres dialect supports UUID columns. This is easy (and the question is specifically postgres) -- I don't understand why the other answers are all so complicated.
Here is an example:
from sqlalchemy.dialects.postgresql import UUID
from flask_sqlalchemy import SQLAlchemy
impo...
How to download image using requests
I'm trying to download and save an image from the web using python's requests module.
14 Answers
...
How to get the first element of an array?
...x of 0. You know what they say about assumption...
– Andy
Aug 9 '15 at 16:19
16
@Andy There were...
What is JSON and why would I use it?
I've looked on wikipedia and Googled it and read the official documentation, but I still haven't got to the point where I really understand what JSON is, and why I'd use it.
...