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PHP - Extracting a property from an array of objects
...5 or later, the best way is to use the built in function array_column():
$idCats = array_column($cats, 'id');
But the son has to be an array or converted to an array
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Android: What is android.R.id.content used for?
Anybody could explain the meaning of "android.R.id.content" ?
3 Answers
3
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Use LINQ to get items in one List, that are not in another List
...sion:
var result = peopleList2.Where(p => !peopleList1.Any(p2 => p2.ID == p.ID));
An alternate way of expressing this via LINQ, which some developers find more readable:
var result = peopleList2.Where(p => peopleList1.All(p2 => p2.ID != p.ID));
Warning: As noted in the comments,...
Copying files from host to Docker container
...cp mycontainer:/foo.txt foo.txt
For emphasis, mycontainer is a container ID, not an image ID.
Multiple files contained by the folder src can be copied into the target folder using:
docker cp src/. mycontainer:/target
docker cp mycontainer:/src/. target
Reference: Docker CLI docs for cp
In Do...
Django in / not in query
...
table1.objects.exclude(id__in=
table2.objects.filter(your_condition).values_list('id', flat=True))
The exclude function works like the Not operator you where asking for. The attribute flat = True tells to table2 query to return the value_list...
Patterns for handling batch operations in REST web services?
...ource. For example, to delete several messages at once.
DELETE /mail?&id=0&id=1&id=2
It's a little more complicated to batch update partial resources, or resource attributes. That is, update each markedAsRead attribute. Basically, instead of treating the attribute as part of each reso...
How to fetch the row count for all tables in a SQL SERVER database [duplicate]
... FROM sys.tables AS T INNER JOIN sys.sysindexes AS I ON T.object_id = I.id AND I.indid < 2 ORDER BY I.rows DESC
– Muhammad Sohail
May 25 '18 at 5:07
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How do I add a foreign key to an existing SQLite table?
...child ADD CONSTRAINT fk_child_parent
FOREIGN KEY (parent_id)
REFERENCES parent(id);
SQLite doesn't support the ADD CONSTRAINT variant of the ALTER TABLE command (sqlite.org: SQL Features That SQLite Does Not Implement).
Therefore, the only way to add a foreig...
SQL select only rows with max value on a column [duplicate]
...All you need is a GROUP BY clause with the MAX aggregate function:
SELECT id, MAX(rev)
FROM YourTable
GROUP BY id
It's never that simple, is it?
I just noticed you need the content column as well.
This is a very common question in SQL: find the whole data for the row with some max value in a co...
How to get the body's content of an iframe in Javascript?
...iframes content.
First get your iframe
var iframe = document.getElementById('id_description_iframe');
// or
var iframe = document.querySelector('#id_description_iframe');
And then use jQuery's solution
var iframeDocument = iframe.contentDocument || iframe.contentWindow.document;
It works ...