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GraphViz - How to connect subgraphs?
...luster, that can be linked to even if the cluster is empty otherwise. DUMMY_0 [shape=point style=invis]
– DevSolar
Jun 25 '12 at 7:36
2
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How to toggle a value in Python
...; toggle()
'blue'
Note that in Python 3 the next() method was changed to __next__(), so the first line would be now written as toggle = itertools.cycle(['red', 'green', 'blue']).__next__
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How to replace a hash key with another key
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hash[:new_key] = hash.delete :old_key
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How do I clear only a few specific objects from the workspace?
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You'll find the answer by typing ?rm
rm(data_1, data_2, data_3)
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How can I backup a remote SQL Server database to a local drive?
...erate Scripts.
This pops open a wizard where you can set the following in order to perform a decent backup of your database, even on a remote server:
Select the database you wish to backup and hit next,
In the options it presents to you:
In 2010: under the Table/View Options, change 'Script Dat...
git command to show all (lightweight) tags creation dates
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It's worth piping this into sort to get a chronological order, if you're into that sort of thing.
– cam8001
Nov 27 '12 at 10:23
42
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SQLAlchemy IN clause
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How about
session.query(MyUserClass).filter(MyUserClass.id.in_((123,456))).all()
edit: Without the ORM, it would be
session.execute(
select(
[MyUserTable.c.id, MyUserTable.c.name],
MyUserTable.c.id.in_((123, 456))
)
).fetchall()
select() takes two paramet...
What are free monads?
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@PauloScardine You do not need the above answer in order to productively program in Haskell, even with free monads. In fact, I wouldn't recommend attacking the free monad in this way to someone who didn't have a background in category theory. There are plenty of ways to talk ...
How to avoid “if” chains?
...the basic flow, e.g. instead of
if (ok)
{
DoSomething();
}
else
{
_log.Error("oops");
return;
}
... you'd use....
if (!ok)
{
_log.Error("oops");
return;
}
DoSomething(); //notice how this is already farther to the left than the example above
When there is a long series of ...
Slow Requests on Local Flask Server
...sk run --with-threads which solved my problem.
– arno_v
Apr 13 '18 at 11:33
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