getify

"use strict";

[foo,bar] = TNG(foo,bar);
// NOTE: intentionally not TNG(..) wrapping useBaz(), so that it's
// basically like a "custom hook" that can be called only from other
// TNG-wrapped functions

function foo(origX,origY) {
   var [x,setX] = useState(origX);
   var [y,setY] = useState(origY);

freewayz

def flatten_array(arr):
    output = []
    for val in arr:
        if type(val) == list:                 # is the current value we are looking at is also a list
            output.extend(flatten_array(val)) # then recursive call itself to start from
                                              # the beginning and use python list extend 
        else:
            output.append(val)                # ok this is not a list just append to the bottom

    return output

bentappin

from django.db import models

class Thing(models.Model):
    # [ snip ]
    def is_deletable(self):
        for rel in self._meta.get_all_related_objects():
            if rel.model.objects.filter(**{rel.field.name: self}).exists():
                return False
        return True