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What is meant by 'first class object'?
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edited Apr 1 '09 at 12:44
answered Apr 1 '09 at 12:04
Sa...
SQL - Update multiple records in one query
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edited Nov 27 '13 at 23:40
answered Nov 27 '13 at 23:34
p...
How to get the last day of the month?
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1134
I didn't notice this earlier when I was looking at the documentation for the calendar module, bu...
What is The Rule of Three?
...r class X calls the destructors for X's direct [...] members
[n3126.pdf 12.4 §6]
Managing resources
So when should we declare those special member functions explicitly?
When our class manages a resource, that is,
when an object of the class is responsible for that resource.
That usually means the ...
Show pending migrations in rails
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Malik Shahzad
4,76333 gold badges3434 silver badges4545 bronze badges
answered Jan 25 '11 at 17:58
jrdiokojrdioko
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How to overcome “datetime.datetime not JSON serializable”?
...Is that Django strips a bit of the data:
"last_login": "2018-08-03T10:51:42.990", # DjangoJSONEncoder
"last_login": "2018-08-03T10:51:42.990239", # default
So, you may need to be careful about that in some cases.
share...
How does C compute sin() and other math functions?
... this is the code that actually runs when you call sin() on a typical x86-64 Linux system. It is apparently faster than the fsin assembly instruction. Source code: sysdeps/ieee754/dbl-64/s_sin.c, look for __sin (double x).
This code is very complex. No one software algorithm is as fast as possible ...
Center Oversized Image in Div
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edited Dec 4 '19 at 11:48
answered Oct 16 '13 at 21:13
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How can I randomize the lines in a file using standard tools on Red Hat Linux?
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And a Perl one-liner you get!
perl -MList::Util -e 'print List::Util::shuffle <>'
It us...