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Unique BooleanField value in Django?
..., self).save(*args, **kwargs)
@Ellis Percival: Hits the database only one extra time and accepts the current entry as the chosen one. Clean and elegant.
from django.db import transaction
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one = models.Bool...
mongodb: insert if not exists
...u want to do an "upsert". MongoDB has built-in support for this. Pass an extra parameter to your update() call: {upsert:true}. For example:
key = {'key':'value'}
data = {'key2':'value2', 'key3':'value3'};
coll.update(key, data, upsert=True); #In python upsert must be passed as a keyword argumen...
How can I remove the string “\n” from within a Ruby string?
I have this string:
6 Answers
6
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How do I size a UITextView to its content?
...PostText.contentSize.height;
self.mainPostText.frame = _f;
It fixes the "extra line" problem on 6+.
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How to specify the order of CSS classes?
...tyle rules appear in your .css file. In your example, .basic comes after .extra so the .basic rules will take precedence wherever possible.
If you want to provide a third possibility (e.g., that it's .basic but that the .extra rules should still apply), you'll need to invent another class, .basic-...
Can I change the checkbox size using CSS?
...xt size
You can control the aspect, the color, the size of the checkbox
No extra HTML needed !
Only 3 lines of CSS needed (the last one is just to give you ideas)
Edit:
As pointed out in the comment, the checkbox won't be accessible by key navigation. You should probably add tabindex=0 as a proper...
How to loop through file names returned by find?
if I run the above piece of code in Bash shell, what I get is a string containing several file names separated by blank, not a list.
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What does multicore assembly language look like?
...few tweaks to make it work on gem5, so you can experiment with performance characteristics as well.
I haven't tested it on real hardware, so and I'm not sure how portable this is. The following Raspberry Pi bibliography might be of interest:
https://github.com/bztsrc/raspi3-tutorial/tree/a3f069b7...
How can I strip first X characters from string using sed?
...riables I need to "clean", so I need to cut away X first characters and ${string:5} doesn't work for some reason in my system.
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Remove duplicate entries using a Bash script [duplicate]
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I like the Perl solution because it allows me to add extra conditions, e.g. only enforce uniqueness on lines matching a certain pattern.
– Amos Shapira
Oct 11 '18 at 4:10
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