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Can't subtract offset-naive and offset-aware datetimes
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UTC doesn't need a timezone, by definition. If the other datetime object is timezone aware then surely that provides the offset relative to UTC. UTC times may not have a timezone but they are not 'naive' and Python is handling this wrongly.
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How to Git stash pop specific stash in 1.8.3?
...syntax stash@{x}, use Git 2.11 (Q4 2016)
See commit a56c8f5 (24 Oct 2016) by Aaron M Watson (watsona4).
(Merged by Junio C Hamano -- gitster -- in commit 9fa1f90, 31 Oct 2016)
stash: allow stashes to be referenced by index only
Instead of referencing "stash@{n}" explicitly, make it possi...
INSERT … ON DUPLICATE KEY (do nothing)
...:
simple.
cons:
too slow.
auto-increment key will CHANGE(increase by 1) if there is entry matches unique key or primary key, because it deletes the old entry then insert new one.
2. INSERT IGNORE
pros:
simple.
cons:
auto-increment key will not change if there is entry matches uni...
Best way to test exceptions with Assert to ensure they will be thrown
...is not sufficient. The exception may not be catchable - since it's thrown by a method that is invoked by reflection - or perhaps I just want to check that other conditions hold, say a transaction is rolled back or some value has still been set. In these cases I wrap it in a try/catch block that ex...
How to convert string to boolean php
...valuate to boolean true unless they have a value that's considered "empty" by PHP (taken from the documentation for empty):
"" (an empty string);
"0" (0 as a string)
If you need to set a boolean based on the text value of a string, then you'll need to check for the presence or otherwise of that ...
jQuery how to bind onclick event to dynamically added HTML element [duplicate]
... Indeed, when you are targeting known markup structures created by some other code. But here he was inserting the elements himself, and there is no clear selector for them (it's just an anchor, which there might be many of), so he would have to add additional markup to be able to target t...
Python unittest - opposite of assertRaises?
...hiwaylon - No, this is the correct solution in fact. The solution proposed by user9876 is conceptually flawed: if you test for the non-raising of say ValueError, but ValueError is instead raised, your test must exit with a failure condition, not an error one. On the other hand, if in running the sam...
How to use single storyboard uiviewcontroller for multiple subclass
...ryboard are linked up to their properties in the view controller.
It will by default initialize with the view controller that is specified in the storyboard definition.
If you are trying to gain reuse of UI elements you created in the storyboard, they still must be linked or associated to properti...
Why would you use Oracle database? [closed]
...performance tuning tools, and finicky optimizer. Whatever savings you get by foregoing an MS Win Server license will immediately be eaten up by lost productivity.
– engil
May 13 '14 at 20:42
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Distinct by property of class with LINQ [duplicate]
... the first car from each group:
List<Car> distinct =
cars
.GroupBy(car => car.CarCode)
.Select(g => g.First())
.ToList();
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