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What does ||= (or-equals) mean in Ruby?
...o 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
If you reall...
What's the difference between ViewData and ViewBag?
... heads-up Matthew Flaschen, I had a typo in the response and fixed it, now reads "ViewData" instead of ViewModel which was a mistake. :)
– Rich Bianco
Nov 20 '11 at 20:02
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When to use wrapper class and primitive type
...
@EddieJamsession After reading up on the matter, I've run into the concept of an Optional object. Right.
– klaar
Nov 16 '17 at 9:59
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What is the convention for word separator in Java package names?
...e considered bad. Does it break tooling? Create confusion? Is it harder to read or type? For the examples given I think we can answer yes to many of those. But I can't understand an absolute ban on capital letters. A package name LikeThis (like a class name) is obviously confusing, but likeThis isn'...
Show the progress of a Python multiprocessing pool imap_unordered call?
...inly wanted to document a stupid assumption I'd made - in case anyone else reading this made it too.
– simonmacmullen
Mar 25 '15 at 12:00
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Xcode 6 beta 2 issue exporting .ipa: “Your account already has a valid iOS distribution certificate”
...ution package for my client
Xcode throws at me vague error: Your account already has a valid iOS distribution certificate
The solution is: get a private key for enterprise account of my client. There are 2 possible options:
Ask you client for credentials to access his enterprise developer accoun...
Validate uniqueness of multiple columns
... You probably want to add a custom error msg like , :message => ' has already this friend.'
– laffuste
May 15 '14 at 9:34
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show 2 more c...
SQL Server 2008: How to query all databases sizes?
...e names, sizes and also database statuses (e.g. ONLINE) in a nice, easy to read output:
SELECT
D.name,
F.Name AS FileType,
F.physical_name AS PhysicalFile,
F.state_desc AS OnlineStatus,
CAST(F.size AS bigint) * 8*1024 AS SizeInBytes,
CAST((F.size*8.0)/1024/1024 AS decimal(18...
Ruby on Rails: Where to define global constants?
...ass variables might act kind of surprising with inheritance and in multi-thread environments.
class Card < ActiveRecord::Base
@@colours = ['white', 'blue']
cattr_reader :colours
end
# accessible the same as above
The two options above allow you to change the returned array on each invocat...
How to get the data-id attribute?
...).attr('data-fruit');
// Assigning data
$(this).attr('data-fruit','7');
Read this documentation
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