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Temporarily disable auto_now / auto_now_add
...s:
# my model
class FooBar(models.Model):
title = models.CharField(max_length=255)
updated_at = models.DateTimeField(auto_now=True, auto_now_add=True)
# my tests
foo = FooBar.objects.get(pk=1)
# force a timestamp
lastweek = datetime.datetime.now() - datetime.timedelta(days=7)
FooBar.obj...
Finding Variable Type in JavaScript
... siple function would be:function getVariableType(object){ return(object.__proto__.constructor.name); }
– Stu
Mar 4 '18 at 15:23
...
Python element-wise tuple operations like sum
...so that it returns a tuple:
import operator
class stuple(tuple):
def __add__(self, other):
return self.__class__(map(operator.add, self, other))
# obviously leaving out checking lengths
>>> a = stuple([1,2,3])
>>> b = stuple([3,2,1])
>>> a + b
(4, 4,...
Resize fields in Django Admin
...
You should use ModelAdmin.formfield_overrides.
It is quite easy - in admin.py, define:
from django.forms import TextInput, Textarea
from django.db import models
class YourModelAdmin(admin.ModelAdmin):
formfield_overrides = {
models.CharField: {'...
Get the current first responder without using a private API
...IResponder+FirstResponder.m
#import "UIResponder+FirstResponder.h"
static __weak id currentFirstResponder;
@implementation UIResponder (FirstResponder)
+(id)currentFirstResponder {
currentFirstResponder = nil;
[[UIApplication sharedApplication] sendAction:@selector(findFirstRe...
How to get multiple selected values of select box in php?
...
If you want PHP to treat $_GET['select2'] as an array of options just add square brackets to the name of the select element like this: <select name="select2[]" multiple …
Then you can acces the array in your PHP script
<?php
header("Content-...
Is it expensive to use try-catch blocks even if an exception is never thrown?
...
public class TryFinally {
public TryFinally();
Code:
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: return
public static void main(java.lang.String[]) throws java.lang.Throwable;
Code:
0: new #2 ...
Include all existing fields and add new fields to document
...s the new fields.
db.collection.aggregate([
{ "$addFields": { "custom_field": "$obj.obj_field1" } }
])
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Getting the last argument passed to a shell script
...
The simplest answer for bash 3.0 or greater is
_last=${!#} # *indirect reference* to the $# variable
# or
_last=$BASH_ARGV # official built-in (but takes more typing :)
That's it.
$ cat lastarg
#!/bin/bash
# echo the last arg given:
_last=${!#}
echo $_last
_last...
How do I run Python code from Sublime Text 2?
... find out where your Break key is here: http://en.wikipedia.org/wiki/Break_key.
Note: CTRL + C will NOT work.
What to do when Ctrl + Break does not work:
Go to:
Preferences -> Key Bindings - User
and paste the line below:
{"keys": ["ctrl+shift+c"], "command": "exec", "args": {"k...