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List passed by ref - help me explain this behaviour
...asses a reference to the local-variable myRef (as declared in TestMethod); now, if you reassign the parameter inside ChangeList you are also reassigning the variable inside TestMethod.
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impro...
SQL query return data from multiple tables
I would like to know the following:
6 Answers
6
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Generating a UUID in Postgres for Insert statement?
...y run. Then I had to run psql -d dbname -f SHAREDIR/contrib/module.sql and now it works!!! select uuid_generate_v1(); returns 1 now now. Thanks so much!
– anon58192932
Sep 29 '12 at 22:13
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Get Output From the logging Module in IPython Notebook
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For anyone trying to do this in Python 3: reload is now imp.reload
– kuzzooroo
Jan 15 '15 at 17:09
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Mutex example / tutorial? [closed]
... it. The other men wait outside
//man happily talks to his wife from now....
std::cout << i << " Hello Wife" << std::endl;
i++;//no other thread can access variable i until m.unlock() is called
//...until now, with no interruption from other men
m.unlock...
Convert UTC datetime string to local datetime
... zones:
from_zone = tz.tzutc()
to_zone = tz.tzlocal()
# utc = datetime.utcnow()
utc = datetime.strptime('2011-01-21 02:37:21', '%Y-%m-%d %H:%M:%S')
# Tell the datetime object that it's in UTC time zone since
# datetime objects are 'naive' by default
utc = utc.replace(tzinfo=from_zone)
# Convert ...
Find Oracle JDBC driver in Maven repository
... @AmanicA According to stackoverflow.com/a/27943380/7677308, Oracle now hosts such a repository
– SilverNak
Dec 28 '17 at 12:56
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sho...
What are enums and why are they useful?
...s (contract status: "permanent", "temp", "apprentice"), or flags ("execute now", "defer execution").
If you use enums instead of integers (or String codes), you increase compile-time checking and avoid errors from passing in invalid constants, and you document which values are legal to use.
BTW, o...
How can I delay a method call for 1 second?
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You could also use a block
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
[object method];
});
Most of time you will want to use dispatch_get_main_queue, although if there is no UI in the method you could use a global queue.
Edit:
Swift...
Can I set background image and opacity in the same property?
...big problem with a PNG is the size. It is likely going to be really large. Now that we can specify opacity: ... in all browsers, it way better!
– Alexis Wilke
Jul 1 '17 at 23:49
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