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How to convert local time string to UTC?

...e code, using local timezone "America/Los_Angeles", for the string "2001-2-3 10:11:12": import pytz, datetime local = pytz.timezone ("America/Los_Angeles") naive = datetime.datetime.strptime ("2001-2-3 10:11:12", "%Y-%m-%d %H:%M:%S") local_dt = local.localize(naive, is_dst=None) utc_dt = local_dt.a...
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What is Persistence Context?

...e useful: http://docs.jboss.org/hibernate/core/4.0/devguide/en-US/html/ch03.html http://docs.jboss.org/hibernate/entitymanager/3.5/reference/en/html/architecture.html In Java EE, a persistence context is normally accessed via an EntityManager. http://docs.oracle.com/javaee/6/api/javax/persistenc...
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Socket.IO - how do I get a list of connected sockets/clients?

... | edited Mar 6 at 10:31 Nguyen Tan Dat 1,57411 gold badge1616 silver badges1616 bronze badges answe...
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How do I check that multiple keys are in a dict in a single pass?

... 370 Well, you could do this: >>> if all (k in foo for k in ("foo","bar")): ... print...
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How to “crop” a rectangular image into a square with CSS?

... answered Mar 1 '13 at 22:04 MichaelMichael 6,40522 gold badges2121 silver badges3838 bronze badges ...
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Get Maven artifact version at runtime

... Anton Eliasson 70311 gold badge66 silver badges88 bronze badges answered Apr 26 '10 at 11:27 Joachim SauerJoachim Saue...
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Adding a guideline to the editor in Visual Studio

...e columns by listing more than one number after the color specifier: RGB(230,230,230), 4, 80 Puts a white line at column 4 and column 80. This should be the value of a string value Guides in "Text Editor" key (see bellow). Be sure to pick a line color that will be visisble on your background. Th...
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Make a div into a link

... 743 Came here in the hope of finding a better solution that mine, but I don't like any of the ones o...
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How to do what head, tail, more, less, sed do in Powershell? [closed]

...elect -last 10 # tail gc -Tail 10 log.txt # also tail (since PSv3), also much faster than above option gc log.txt | more # or less if you have it installed gc log.txt | %{ $_ -replace '\d+', '($0)' } # sed This works well enough for small files, larger ones (more tha...
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Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?

... 130 Consider the case of an object that may have nil properties while it's being constructed and co...