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Best way to store date/time in mongodb
...ormat tells MongoDB that the timestamp you provided is in UTC. If you then read it back, your application probably converts it to your local timezone, making it seem like the time has changed. But the time is still the same, it's only interpreted from a different timezone perspective. For example 12...
Structure padding and packing
...emory footprint of c program, it takes only at most several days to finish reading.
– Eric Wang
Feb 14 '17 at 13:29
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Bitwise operation and usage
...ion hardware. In this case, in order to find the frames, you will need to read the raw bytes in the file and try to find some kind of synchronization words, by scanning the data bit by bit. After identifying the synchronization words, you will need to get the actual frames, and SHIFT them if necess...
XML parsing of a variable string in JavaScript
...answer linking to @TimDown's correct answer. That way people don't have to read all these comments to figure out the correct answer.
– Senseful
Jan 24 '12 at 4:44
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How does the new automatic reference counting mechanism work?
...performance...ARC puts a bigger priority on performance". I'm surprised to read that when it is well known that reference counting is much slower than tracing garbage collection. flyingfrogblog.blogspot.co.uk/2011/01/…
– J D
Jan 26 '14 at 12:49
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What is the difference between And and AndAlso in VB.NET?
...it doesn't check if y is 7, because it knows that the condition is false already. (This is called short-circuiting.)
Generally people use the short-circuiting method if there's a reason to explicitly not check the second part if the first part is not true, such as if it would throw an exception if ...
Setting href attribute at runtime
... the href attribute with
$(selector).attr('href', 'url_goes_here');
and read it using
$(selector).attr('href');
Where "selector" is any valid jQuery selector for your <a> element (".myClass" or "#myId" to name the most simple ones).
Hope this helps !
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Let JSON object accept bytes or let urlopen output strings
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Python’s wonderful standard library to the rescue…
import codecs
reader = codecs.getreader("utf-8")
obj = json.load(reader(response))
Works with both py2 and py3.
Docs: Python 2, Python3
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What do the terms “CPU bound” and “I/O bound” mean?
...ile for some data might become I/O bound, since the bottleneck is then the reading of the data from disk (actually, this example is perhaps kind of old-fashioned these days with hundreds of MB/s coming in from SSDs).
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Should I index a bit field in SQL Server?
I remember reading at one point that indexing a field with low cardinality (a low number of distinct values) is not really worth doing. I admit I don't know enough about how indexes work to understand why that is.
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