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sqlalchemy flush() and get inserted id?
...re populated immediately within the flush() process as they are generated, and no call to commit() should be required. So the answer here lies in one or more of the following:
The details of your mapping
If there are any odd quirks of the backend in use (such as, SQLite doesn't generate integer v...
Regex (grep) for multi-line search needed [duplicate]
...me followed by the word from . This select statement can span many lines and can contain tabs and newlines.
3 Answers
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What is the difference between pluck and collect in Rails?
...er.first.gifts.collect(&:id)
You have objects with all fields loaded and you simply get the id thanks to the method based on Enumerable.
So:
if you only need the id with Rails 4, use ids: User.first.gifts.ids
if you only need some fields with Rails 4, use pluck: User.first.gifts.pluck(:id, ...
What is Scala's yield?
I understand Ruby and Python's yield. What does Scala's yield do?
9 Answers
9
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Cast List to List in .NET 2.0
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I found that it works with VS2008 and .NET 2.0, as long as you have at least .NET 3.0 installed. see stackoverflow.com/questions/3341846/…
– igelineau
Oct 15 '14 at 14:26
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How to unstage large number of files without deleting the content
...o an overzealous "git add" run:
git reset
Your changes will be unstaged and ready for you to re-add as you please.
DO NOT RUN git reset --hard.
It will not only unstage your added files, but will revert any changes you made in your working directory. If you created any new files in working ...
How do I choose between Semaphore and SemaphoreSlim?
... documentation states that the SemaphoreSlim is a lightweight alternative and doesn't use Windows Kernel semaphores. This resource states that the SemaphoreSlim is much faster. In what situations does the SemaphoreSlim make more sense over the Semaphore and vice versa?
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Stop UIWebView from “bouncing” vertically?
...ean when a user touches their iphone screen, drags their finger downwards, and the webview shows a blank spot above the web page I had loaded?
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On logout, clear Activity history stack, preventing “back” button from opening logged-in-only Activi
...f the history stack so that pressing the "back" button returns the user to Android's home screen.
18 Answers
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How do I return to an older version of our code in Subversion?
I'm working on a project with a friend and I want to return to an older version of our code and set it to be the current. How do I do it?
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