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What is the difference between ManualResetEvent and AutoResetEvent in .NET?
...or. The ManualResetEvent is the door, which needs to be closed (reset) manually. The AutoResetEvent is a tollbooth, allowing one car to go by and automatically closing before the next one can get through.
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Pass An Instantiated System.Type as a Type Parameter for a Generic Class
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OK, this is good, but how does one go about calling methods on created? More reflection?
– Robert C. Barth
Nov 5 '08 at 20:38
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Overlaying histograms with ggplot2 in R
...istogram(alpha = 0.2)
is telling ggplot to construct one histogram using all the values in f0 and then color the bars of this single histogram according to the variable utt.
What you want instead is to create three separate histograms, with alpha blending so that they are visible through each oth...
IN vs OR in the SQL WHERE Clause
...ds a much more complex evaluation process than the IN construct because it allows many conditions, not only equals like IN.
Here is a like of what you can use with OR but that are not compatible with IN:
greater. greater or equal, less, less or equal, LIKE and some more like the oracle REGEXP_LIKE...
Is it possible to cast a Stream in Java 8?
...? Say I have a list of objects, I can do something like this to filter out all the additional objects:
4 Answers
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How can I read a function's signature including default argument values?
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@Spi, you are calling inspect.getargspec on a module, not a function.
– Mike Graham
Apr 20 '10 at 17:36
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updating table rows in postgres using subquery
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Postgres allows:
UPDATE dummy
SET customer=subquery.customer,
address=subquery.address,
partn=subquery.partn
FROM (SELECT address_id, customer, address, partn
FROM /* big hairy SQL */ ...) AS subquery
WHERE dummy.addre...
What's the difference between findAndModify and update in MongoDB?
...you will get back a different item than what you updated.
Doing it "atomically" means you are guaranteed that you are getting back the exact same item you are updating - i.e. no other operation can happen in between.
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How to make a class JSON serializable
...t;>> magic(f)
'{"fname": "/foo/bar"}'
In that case you can merely call json.dumps(f.__dict__).
If you want more customized output then you will have to subclass JSONEncoder and implement your own custom serialization.
For a trivial example, see below.
>>> from json import JSONE...
Apply CSS styles to an element depending on its child elements
... div, based on its child contents and then apply a CSS class to the parent all in one line.
If you use jQuery, something along the lines of this would may work (untested but the theory is there):
$('div:has(div.a)').css('border', '1px solid red');
or
$('div:has(div.a)').addClass('redBorder');
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