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import operator | |
from functools import reduce | |
from django.db.models import Q | |
class QueryBuilder: | |
""" | |
Continuous queryset filtering | |
""" | |
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registry = {} | |
class MultiMethod(object): | |
def __init__(self, name): | |
self.name = name | |
self.typemap = {} | |
def __call__(self, *args): | |
# a generator expression |
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import string | |
from random import SystemRandom | |
def generate_key(field_name, model, size=8): | |
charset = string.ascii_lowercase + string.digits | |
key = ''.join(SystemRandom().choice(charset) for _ in range(size)) | |
is_exist = model._default_manager.filter(**{field_name: key}).exists() | |
while is_exist: | |
key = generate_key(size, model) |
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""" | |
class SampleCategoryModel | |
id = primary | |
class SamplePostModel | |
category = foreignkey(SampleCategoryModel) | |
created_at = datetimefield | |
""" | |
from django.db.models import Max |
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def get_client_ip(request): | |
x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR') | |
if x_forwarded_for: | |
return x_forwarded_for.split(',')[0] | |
else: | |
return request.META.get('REMOTE_ADDR') |
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git clone --mirror [OriginRepo.git] | |
cd [OriginRepo.git] | |
git remote set-url --push origin [New Repo.git] | |
git push --mirror |
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export $(cat .env | grep -v ^# | grep -v ^alias | xargs) |
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<a href="#modalBox" data-toggle="modal">OpenButton</a> | |
<div class="modal fade" id="modalBox" tabindex="-1" role="dialog" aria-labelledby="modal-label" aria-hidden="true"> | |
<div class="modal-dialog"> | |
<div class="modal-content"> | |
<div class="modal-header"> | |
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button> | |
<h4 class="modal-title" id="modal-label"> | |
Title Area | |
</h4> |
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private val backButtonSubject: Subject<Long> = BehaviorSubject.createDefault(0L).toSerialized() | |
private val backButtonSubjectDisposable = | |
compositeDisposable.add(backButtonSubject.toFlowable(BackpressureStrategy.BUFFER) | |
.subscribeOn(Schedulers.io()) | |
.observeOn(AndroidSchedulers.mainThread()) // need compose | |
.buffer(2, 1) | |
.map { it[0] to it[1] } | |
.subscribe({ value -> | |
if (value.second - value.first < 2000) getView()?.finishView() |
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def get_if_int_or_float(value, under_num=1): | |
return int(value) if value.is_integer() else round(value, under_num) |