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When to use a “has_many :through” relation in Rails?
...role
end
This introduces a new table, and eliminates the group_id column from the user's table.
The problem with this code is that you'd have to update every where else you use the user class and change it:
user.groups.first.name
# becomes
user.group_memberships.first.group.name
This type of...
Window Height=“Auto” not working as expected
...content of window increases more than the screen size, window can overflow from screen.
– Kylo Ren
Apr 23 '16 at 18:00
...
When should I use Lazy?
...ssure on the GC in high load scenarios. Therefore, making them a Singleton from within the class itself is fine. Most (if not all) modern DI containers can handle it either way you choose.
– Lee Grissom
Jun 29 '17 at 20:17
...
bool to int conversion
...ortable. Standard conformant. bool to int conversion is implicit!
§4.7/4 from the C++ Standard says (Integral Conversion)
If the source type is bool, the value false is converted to zero and
the value true is converted to one.
As for C, as far as I know there is no bool in C. (before 199...
Prevent line-break of span element
...ines as necessary to fill line boxes.
pre
This value prevents user agents from collapsing sequences of white space. Lines are only broken at newlines in the source, or at occurrences of "\A" in generated content.
nowrap
This value collapses white space as for 'normal', but suppresses line breaks w...
What is the difference between IEqualityComparer and IEquatable?
...an interface for an object (which is usually a lightweight class different from T) that provides comparison functions that operates on T
– rwong
Feb 22 at 16:40
...
Assign output to variable in Bash
...
Same with something more complex...getting the ec2 instance region from within the instance.
INSTANCE_REGION=$(curl -s 'http://169.254.169.254/latest/dynamic/instance-identity/document' | python -c "import sys, json; print json.load(sys.stdin)['region']")
echo $INSTANCE_REGION
...
How to use transactions with dapper.net?
...erred to use a more intuitive approach by getting the transaction directly from the connection:
// This called method will get a connection, and open it if it's not yet open.
using (var connection = GetOpenConnection())
using (var transaction = connection.BeginTransaction())
{
connection.Execut...
Async/Await vs Threads
...f milliseconds are common and an inevitable side-effect of services moving from the desktop or a LAN into "the cloud". Using such services synchronously would make a UI quite unresponsive.
only can be used with some methods like WebClient.DownloadStringAsync
No. You can use it with any method...
Sorting HashMap by values [duplicate]
...of the nested while loop. There are better answers, like the excellent one from Rais Alarm down here.
– Vargan
Jan 29 at 22:36
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