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How can I select rows with most recent timestamp for each key value?
...and s1.timestamp = s2.mts" is not nessesary IMHO. And yet, I advise create index on two fields: sensorID+timestamp - query speed increases great!
– Igor
Apr 4 '17 at 7:57
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Elegant Python function to convert CamelCase to snake_case?
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There's an inflection library in the package index that can handle these things for you. In this case, you'd be looking for inflection.underscore():
>>> inflection.underscore('CamelCase')
'camel_case'
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What is the difference between using IDisposable vs a destructor in C#?
... structure which is presently marked "free", mark it "used", and return an index to it; a release request should mark a structure as "free". If an allocation request returns e.g. 23, then...
– supercat
May 18 '15 at 16:39
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When do items in HTML5 local storage expire?
...okies. I am using it in conjunction with pieroxy.net/blog/pages/lz-string/index.html.
– Peter Smartt
Apr 13 '16 at 6:22
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Want to find records with no associated records in Rails
... the DISTINCT. Otherwise, I think you'd want to normalize out the data and index in that case. I might do that by creating a friend_ids hstore or serialized column. Then you could say Person.where(friend_ids: nil)
– Unixmonkey
Dec 20 '16 at 16:02
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What is sys.maxint in Python 3?
...xsize can be used as an
integer larger than any practical list or string index. It conforms to
the implementation’s “natural” integer size and is typically the same
as sys.maxint in previous releases on the same platform (assuming the
same build options).
http://docs.python.org/3.1/w...
Algorithm for Determining Tic Tac Toe Game Over
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He might've been thinking that the cells were zero-indexed.
– Matias Grioni
Nov 6 '17 at 23:39
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stash@{1} is ambiguous?
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How does this answer the question? There is no #3 index in stash list. If this is a serious answer please explain why this command will solve the problem
– Brad
Mar 8 '17 at 19:59
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How to install both Python 2.x and Python 3.x in Windows
...fine where the package should be installed:
http://docs.python.org/install/index.html#alternate-installation-windows-the-prefix-scheme
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Load HTML file into WebView
...iewClient(new WebViewClient());
webView.loadUrl("file:///android_asset/index.html");
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