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How to trigger event when a variable's value is changed?
...t the event has been raised or in case that you are dealing with a Windows Form you can use a BackgourndWorker to do things in a parallel thread nice and easy.
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What's the difference between Invoke() and BeginInvoke()
...it was mostly geared towards Delegate.BeginInvoke, I suspect.
For Windows Forms apps, I would suggest that you should usually use BeginInvoke. That way you don't need to worry about deadlock, for example - but you need to understand that the UI may not have been updated by the time you next look at...
Is there any NoSQL data store that is ACID compliant?
...ata sets it provides interesting opportunities to deal with volumes and performance.
ACID provides principles governing how changes are applied to a database. In a very simplified way, it states (my own version):
(A) when you do something to change a database the change should work or fail as a w...
How to exclude certain directories/files from git grep search
...n do:
git grep foobar -- './*' ':(exclude)*.java'
Or using the ! "short form" for exclude:
git grep foobar -- './*' ':!*.java'
Note that in git versions up to v2.12, when using an exclude pathspec, you must have at least one "inclusive" pathspec. In the above examples this is the ./* (recursiv...
In C#, how do I calculate someone's age based on a DateTime type birthday?
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Just wanted to comment on DateTime.Now performance. If you don't need an accurate time zone value, use DateTime.UtcNow it's much faster.
– JAG
Jan 22 '09 at 10:29
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What is the difference between CMD and ENTRYPOINT in a Dockerfile?
...default there's no ENTRYPOINT; whether a shell is used depends on the used form of the CMD command (docs.docker.com/engine/reference/builder/#cmd).
– Blaisorblade
Jan 13 '16 at 22:29
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CASCADE DELETE just once
... aren't set up with the ON DELETE CASCADE rule. Is there any way I can perform a delete and tell Postgresql to cascade it just this once? Something equivalent to
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Extract elements of list at odd positions
...he end is just a notation for list slicing. Usually it is in the following form:
some_list[start:stop:step]
If we omitted start, the default (0) would be used. So the first element (at position 0, because the indexes are 0-based) would be selected. In this case the second element will be selected...
Is python's sorted() function guaranteed to be stable?
...rting by pairs is clearer and is thus preferable, unless you care about performance. I'd imagine that two stable sorts are somewhat faster than one sort by pairs, though the difference may be negligible - ?
– Sergey Orshanskiy
Dec 3 '13 at 17:39
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Difference between method and function in Scala
...e on 3.2.9, and no where else.
A Function Type is (roughly) a type of the form (T1, ..., Tn) => U, which is a shorthand for the trait FunctionN in the standard library. Anonymous Functions and Method Values have function types, and function types can be used as part of value, variable and functi...