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Understanding ibeacon distancing
...ssi) over the calibrated transmitter power (txPower). The txPower is the known measured signal strength in rssi at 1 meter away. Each beacon must be calibrated with this txPower value to allow accurate distance estimates.
While the distance estimates are useful, they are not perfect, and require ...
Include constant in string without concatenating
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@Pekka: I know :-D (just this time... ;) )
– Felix Kling
Feb 4 '10 at 23:26
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vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...e
【Other Options】:
--build-type=<type> Build the specified pre-defined set of variations
of the libraries. Note, that which variants get
built depends on what each library supports.
minimal (default) - ...
How to trigger event when a variable's value is changed?
...of 1 then a certain piece of code is carried out.
I know that I can use an if statement but the problem is that the value will be changed in an asynchronous process so technically the if statement could be ignored before the value has changed.
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How do I determine if my python shell is executing in 32bit or 64bit?
... Thanks for checking. I've substantially revised the answer to show the now documented sys.maxsize test for Python 2.6+ and the struct test used by the platform module which also works for older versions of Python 2.
– Ned Deily
Mar 30 '11 at 17:43
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What column type/length should I use for storing a Bcrypt hashed password in a Database?
...define the column as CHAR(60) CHARACTER SET latin1 COLLATE latin1_bin, you now get the advantages of accurate string comparison without needing a binary column.
– Ben
Feb 25 '14 at 16:01
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How do I remove a project configuration in Visual Studio 2008?
...configuration is indeed removed from the Configuration Manager. But If you now go to the properties of your project, then the configuration is still there. If you look inside the .vcxproj files, then the configuration is still there. I use Visual Studio 2013 (Professional and Ultimate)
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How to remove unreferenced blobs from my git repo
...chable=0 -c gc.rerereresolved=0 -c gc.rerereunresolved=0 -c gc.pruneExpire=now gc
You might also need to run something like these first, oh dear, git is complicated!!
git remote rm origin
rm -rf .git/refs/original/ .git/refs/remotes/ .git/*_HEAD .git/logs/
git for-each-ref --format="%(refname)" r...
How to get the concrete class name as a string? [duplicate]
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What if you don't want to instantiate the class? can you just get the name of the class? (without the object)
– Gabriel
Oct 15 '13 at 23:17
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Count the number occurrences of a character in a string
...nswers said, using the string method count() is probably the simplest, but if you're doing this frequently, check out collections.Counter:
from collections import Counter
my_str = "Mary had a little lamb"
counter = Counter(my_str)
print counter['a']
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