amagee

class Contact(db.Model):
    __tablename__ = 'contacts'
    id = Column(Integer, primary_key=True)

    """
    `passive_deletes='all'` stops SQLAlchemy setting the associated projects' 
    contacts to null when we delete a contact.
    """
    projects = relationship('Project', lazy='dynamic', passive_deletes='all')

amagee

def f():
    lst = SortedListWithKey([1,4,8,16], lambda k: k)
    for i in range(0, 20):
       print(i, lst[max(lst.bisect_right(i) - 1, 0)]) 

>>> f()
0 1
1 1
2 1
3 1

amagee

Input:

    <div className="daily-timesheet">
        <h1>Hello</h1>
        <MyWidget />
        <SaveStatus />
    </div>


Output:

amagee

>>> 'a'.localeCompare('A', 'en', {sensitivity: 'base'})
0

amagee

% ar x file.deb

(Creates control.tar.gz  data.tar.xz  debian-binary)

% ar file.deb control.tar.gz data.tar.xz debian-binary

(Recreates file.deb from those three files)

amagee

# Grep for text but don't filter lines, just highlight the matches
ag <search> --passthrough

# Show a number of lines after the match
ag <search> -A <num>

# One result per line (ie. don't group by filename.. useful for piping to `wc -l`)
ag <search> --nogroup

# Case sensitive

amagee

>>> import jinja2
>>> jinja2.Template("{{ variable }}").render(variable="value")
'value'


>>> import jinja2, json
>>> t = jinja2.Template("{{ a | json }}")
>>> t.environment.filters['json'] = json.dumps
>>> t.render(a="\n\n\n")
'"\\n\\n\\n"'

amagee

-- http://stackoverflow.com/a/36023359/223486

Executable in psql shell:

DO $$ DECLARE
    r RECORD;
BEGIN
    -- if the schema you operate on is not "current", you will want to
    -- replace current_schema() in query with 'schematodeletetablesfrom'
    -- *and* update the generate 'DROP...' accordingly.

amagee

sudo apt-get --reinstall install virtualbox-dkms

# http://askubuntu.com/a/768310/211502

# for example...
for MODULENAME in vboxdrv vboxnetflt vboxnetadp vboxpci; do
  openssl req -new -x509 -newkey rsa:2048 -keyout MOK.priv -outform DER -out MOK.der -nodes -days 36500 -subj "/CN=Descriptive name/"
  sudo /usr/src/linux-headers-$(uname -r)/scripts/sign-file sha256 ./MOK.priv ./MOK.der $(modinfo -n $MODULENAME)
  sudo mokutil --import MOK.der

amagee

# http://stackoverflow.com/a/16595367/223486
find . -not \( -path ./node_modules -prune \) -name '*.js

# Note that the behaviour is different if you reverse the -name and -not arguments.