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What does inverse_of do? What SQL does it generate?
...any of the following options:
:through
:foreign_key
class Author < ApplicationRecord
has_many :books, inverse_of: 'writer'
end
class Book < ApplicationRecord
belongs_to :writer, class_name: 'Author', foreign_key: 'author_id'
end
a = Author.first
b = a.books.first
a.first_name == b.w...
How to identify unused css definitions
Are there any good approaches to help identify unused css definitions in a project? A bunch of css files were pulled in and now I'm trying to clean things up a bit.
...
Renaming a branch in GitHub
...leting the old? I personally prefer processes where the delete operation happens after the create operation is successful, just in case something goes wrong.
– jmort253
Feb 16 '15 at 9:01
...
C# 通过代码安装、卸载、启动、停止服务 - .NET(C#) - 清泛IT论坛，有思想、有深度
...sp; IDictionary _SavedState = new Hashtable();
ServiceController service = new ServiceController(serviceName);
 ...
How to create a new database using SQLAlchemy?
...postgres so I ended up doing this to ignore the exception if the database happens to already exist with SQL Server:
import logging
import sqlalchemy
logging.basicConfig(filename='app.log', format='%(asctime)s-%(levelname)s-%(message)s', level=logging.DEBUG)
engine = create_engine('mssql+pyodbc://m...
Parallel.ForEach vs Task.Run and Task.WhenAll
...
My Parallel.ForEach construct was crashing my application. I was performing some heavy image processing inside it. However, when i added Task.Run(()=> Parallel.ForEach(....)); It stopped crashing. Can you explain why? Please note i constrain the parallel options to th...
Visual Studio immediate window command for Clear All
...ClearImmediateWindow()
Try
Dim vsWindowKindImmediateWindow As String _
= "{ECB7191A-597B-41F5-9843-03A4CF275DDE}"
Try
Dim obj As Object = System.Runtime.InteropServices.Marshal._
GetActiveObject("VisualStudio.DTE.10.0")
If obj IsNot Nothing...
Save string to the NSUserDefaults?
... ? thanks but your code works as same as mine , I create a custom calendar app which user can write their notes in it , for example in 3 Feb user writes something and this text should be saved in 3 Feb , and when user move to the another days he/she could write something else accruing to thad day da...
Does Redis persist data?
...from disk. Or is it always a blank store which is only to store data while apps are running with no persistence?
5 Answers
...
What is the difference between build.sbt and build.scala?
...thand notation roughly equivalent to this project/Build.scala:
import sbt._
import Keys._
object Build extends Build {
lazy val root = Project(id = "root", base = file(".")).settings(
name := "hello",
version := "1.0"
)
}
The .sbt file can also include vals, lazy vals, and defs...