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What does ||= (or-equals) mean in Ruby?
...discussed so often on the Ruby mailing-lists and Ruby blogs that there are now even threads on the Ruby mailing-list whose only purpose is to collect links to all the other threads on the Ruby mailing-list that discuss this issue.
Here's one: The definitive list of ||= (OR Equal) threads and pages
I...
CRON job to run on the last day of the month
...-1 month'); $previousMonth = $date->format('Y-m'); // $previousMonth is now 2013-02. Build query to fetch products for the previous month.
– Lamy
Jan 19 '13 at 6:41
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Can't install PIL after Mac OS X 10.9
... tool, in Mountain Lion this was an option on the xcode Download page, but now you have to register with your apple id and download from: https://developer.apple.com/downloads/
Look for Command Line Tools (OS X Mavericks) for Xcode
2) Install everything needed for python (using brew), I believe yo...
Red black tree over avl tree
... balance factor at each node. This takes O(N) extra space. However, if we know that the keys that will be inserted in the tree will always be greater than zero, we can use the sign bit of the keys to store the colour information of a red-black tree. Thus, in such cases red-black tree takes no extra ...
How do you get a string from a MemoryStream?
If I am given a MemoryStream that I know has been populated with a String , how do I get a String back out?
11 Answers...
Which, if any, C++ compilers do tail-recursion optimization?
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ICC would do so, I believe. To the best of my knowledge, ICC produces the fastest code on the market.
– Paul Nathan
Oct 21 '08 at 4:04
35
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How to create a multi-tenant database with shared table structures?
....
How many prospective tenants do you expect to target? You may be nowhere
near being able to estimate
prospective use with authority, but
think in terms of orders of magnitude:
are you building an application for
hundreds of tenants? Thousands? Tens
of thousands? More? The large...
How to prevent open last projects when intellij idea start
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In 14 this is now in Settings -> Appearance & Behavior -> System Settings. Or you can use the search functionality to find it easier.
– Java Devil
May 12 '15 at 23:39
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Python try-else
... print('if this prints, we had no error!') # won't print!
print('And now we have left the try block!') # will print!
And now,
>>> handle_error()
handled a RuntimeError, no big deal.
And now we have left the try block!
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How to capture no file for fs.readFileSync()?
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now, fs.existsSync is not deprecated anymore: "Note that fs.exists() is deprecated, but fs.existsSync() is not."
– falkodev
Feb 17 '17 at 11:43
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