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Automatic creation date for Django model form objects?
... respectively.
class MyModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)
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Why do I get the error “Unsafe code may only appear if compiling with /unsafe”?
...he settings might differ between Debug and Release compile. This just cost me 20 minutes of my life.
– LosManos
Dec 2 '15 at 15:07
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Convert to/from DateTime and Time in Ruby
How do you convert between a DateTime and a Time object in Ruby?
6 Answers
6
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Is it true that one should not use NSLog() on production code?
I was told this a few times in this very site, but I wanted to make sure this is really the case.
12 Answers
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PHP exec() vs system() vs passthru()
...th the output yourself.
system() is for executing a system command and immediately displaying the output - presumably text.
passthru() is for executing a system command which you wish the raw return from - presumably something binary.
Regardless, I suggest you not use any of them. They all pro...
How can I generate a unique ID in Python? [duplicate]
...le probably don't have that yet, so I generally avoid this module. Caused me major headaches with listen sockets...
– Glenn Maynard
Jul 31 '09 at 3:14
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How to prevent favicon.ico requests?
...eb page is a good thing (normally).
However it is not always desired and sometime developers need a way to avoid the extra payload. For example an IFRAME would request a favicon without showing it.
Worst yet, in Chrome and Android an IFRAME will generate 3 requests for favicons:
"GET /favicon.ico HT...
What is the difference between HashSet and List?
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Unlike a List<> ...
A HashSet is a List with no duplicate members.
Because a HashSet is constrained to contain only unique entries, the internal structure is optimised for searching (compared with a list) - it is considerably faster
Adding to a HashSet returns a boolean - false if a...
cd into directory without having permission
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YAML Multi-Line Arrays
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- string3
- string4
- string5
- string6
That's identical in meaning to:
key: ['string1', 'string2', 'string3', 'string4', 'string5', 'string6']
It's also legal to split a single-line array over several lines:
key: ['string1', 'string2', 'string3',
'string4', 'string5',
'stri...