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How can I select rows with most recent timestamp for each key value?
I have a table of sensor data. Each row has a sensor id, a timestamp, and other fields. I want to select a single row with latest timestamp for each sensor, including some of the other fields.
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How to serialize a lambda?
How can I elegantly serialize a lambda?
5 Answers
5
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How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
I have a requirement which is relatively obscure, but it feels like it should be possible using the BCL.
3 Answers
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How to have Emacs auto-refresh all buffers when files have changed on disk?
I have a non-emacs global search and replace function that causes my disk files to become more up-to-date than my emacs buffers (en masse). Is there any way to tell emacs to refresh all the buffers from disk in one fell swoop, instead of having to do each one individually by reloading the file?
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AngularJS - convert dates in controller
Could anyone please suggest me how to convert date from this 1387843200000 format into this 24/12/2013 inside my controller ?
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jQuery text() and newlines
...he lowest version of IE that supports the pair is 8.
https://css-tricks.com/almanac/properties/w/whitespace/
P.S. Until CSS3 become common you'd probably need to manually trim off initial and/or trailing white-spaces.
shar...
Conditions for automatic generation of default/copy/move ctor and copy/move assignment operator?
I want to refresh my memory on the conditions under which a compiler typically auto generates a default constructor, copy constructor and assignment operator.
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What does apply_filters(…) actually do in WordPress?
I'm trying to understand some of the function in WordPress, but I can't get my head around what apply_filters(...) actually does.
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Installing python module within code
I need to install a package from PyPi straight within my script.
Maybe there's some module or distutils ( distribute , pip etc.) feature which allows me to just execute something like pypi.install('requests') and requests will be installed into my virtualenv.
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jQuery append() - return appended elements
I'm using jQuery.append() to add some elements dynamically. Is there any way to get a jQuery collection or array of these newly inserted elements?
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