ToshY

What's the difference between cascade="remove" and orphanRemoval=true in Doctrine 2

TLDR: The cascade={"remove"} is like a "software" onDelete="CASCADE", and will remove objects from the database only when an explicit call to $em->remove() occurs. Thus, it could result in more than one object being deleted. orphanRemoval can remove objects from the database even if there was no explicit call to ->remove().

I answered this question a few times to different people so I will try to sum things up in this Gist.

Let's take two entities A and B as an example. I will use a OneToOne relationship in this example but it works exactly the same with OneToMany relationships.

class A

Squashing Git Commits

The easy and flexible way

This method avoids merge conflicts if you have periodically pulled master into your branch. It also gives you the opportunity to squash into more than 1 commit, or to re-arrange your code into completely different commits (e.g. if you ended up working on three different features but the commits were not consecutive).

Note: You cannot use this method if you intend to open a pull request to merge your feature branch. This method requires committing directly to master.

Switch to the master branch and make sure you are up to date:

Nginx FastCGI response buffer sizes

By default when Nginx starts receiving a response from a FastCGI backend (such as PHP-FPM) it will buffer the response in memory before delivering it to the client. Any response larger than the set buffer size is saved to a temporary file on disk. This process is also explained at the Nginx ngx_http_fastcgi_module page document page.

Since disk is slow and memory is fast the aim is to get as many FastCGI responses passing through memory only. On the flip side we don't want to set an excessively large buffer as they are created and sized on a per request basis (i.e. it's not shared memory).

The related Nginx options are:

fastcgi_buffering appeared in Nginx 1.5.6 (1.6.0 stable) and can be used to turn buffering completely on/off. It's on by default.
[fastcgi_buffer_size](http://nginx.org/en/

Direct copy of pre-encoded file:

$ ffmpeg -i filename.mp4 -codec: copy -start_number 0 -hls_time 10 -hls_list_size 0 -f hls filename.m3u8

	## Delete a remote branch
	$ git push origin --delete <branch> # Git version 1.7.0 or newer
	$ git push origin :<branch> # Git versions older than 1.7.0

	## Delete a local branch
	$ git branch --delete <branch>
	$ git branch -d <branch> # Shorter version
	$ git branch -D <branch> # Force delete un-merged branches

	## Delete a local remote-tracking branch

	import numpy as np
	from sklearn.datasets import make_moons
	from sklearn.cross_validation import train_test_split


	n_feature = 2
	n_class = 2


	def make_network(n_hidden=100):


	obs --startrecording --startstreaming
	# For OBS Studio,
	# --collection [scene collection name],
	# --profile [profile name],
	# --scene [scene name],
	# --startstreaming,
	# --startrecording.

	# https://obsproject.com/forum/threads/obs-studio-command-line-parameters.56185/

	#!/bin/bash

	# This script will extract the certificate and key from an .ovpn file
	# into their own files, which makes it possible to use them to configure
	# the VPN using Ubuntu's network manager

	# Usage example:
	# >> ovpnconvert username.dev.ovpn

	# You can keep following these instructions here:

	# coding=utf-8
	import numpy as np
	import matplotlib.pyplot as plt
	from scipy.spatial import Voronoi
	from shapely.geometry import Polygon

	def voronoi_finite_polygons_2d(vor, radius=None):
	"""
	Reconstruct infinite voronoi regions in a 2D diagram to finite
	regions.

	// Add on element with overflow
	-webkit-mask-image: -webkit-radial-gradient(white, black);