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What's the difference between Ruby's dup and clone methods?
...n and states the differences. It's also worth noting that both methods are meant for different situations as stated by the Object#dup documentation. The use case for clone is cloning an object with the intention to use it as that same instance (while having a different object id), while dup is inten...
Should I use PATCH or PUT in my REST API?
...d}
In case you wish to replace an entire Group. This does not necessarily mean that the server actually creates a new group and throws the old one out, e.g. the ids might remain the same. But for the clients, this is what PUT can mean: the client should assume he gets an entirely new item, based on...
Many-to-many relationship with the same model in rails?
..., post_b_id: 16, category: "scolding">
>> b.posts(true) # 'true' means force a reload
=> [#<Post id: 16, name: "Eels are delicious!">]
And we can also manipulate the post_connections and reverse_post_connections associations; it will neatly reflect in the posts association:
>...
Why can tuples contain mutable items?
...t would do. Wouldn't this be more of a design decision for what tuples are meant to be?
– garg10may
Oct 26 '17 at 10:41
...
creating a strikethrough text?
Can I create a strikethrough text in Android, I mean adding a special value in the TextView tag that can make this possible?
...
How to check if a function exists on a SQL database
...' ))
DROP FUNCTION [dbo].[foo]
GO
This approach to deploying changes means that you need to recreate all permissions on the object so you might consider ALTER-ing if Exists instead.
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im...
Difference between partition key, composite key and clustering key in Cassandra?
...low_simple (
key text PRIMARY KEY,
data text
);
That means that it is made by a single column.
But the primary key can also be COMPOSITE (aka COMPOUND), generated from more columns.
create table stackoverflow_composite (
key_part_one text,
key_part_two int,
...
ASP.NET MVC Ajax Error handling
...p broadcast.oreilly.com/2011/06/… : "Failing to realize that a 4xx error means I messed up and a 5xx means you messed up" - where I is the client and you is the server.
– Chris Nevill
Oct 7 '14 at 10:07
...
When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
...uarantees about whether it will occur before or after onPause()" Does that mean if we try to access a view (to get some value to save, like an index from a listview) we might run into NullPointerExceptions?
– Tiago
Feb 23 '15 at 21:56
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PHP + MySQL transactions examples
...ery');
$db->query('third query');
// If we arrive here, it means that no exception was thrown
// i.e. no query has failed, and we can commit the transaction
$db->commit();
} catch (\Throwable $e) {
// An exception has been thrown
// We must rollback the transaction...