大约有 40,000 项符合查询结果（耗时：0.0362秒） [XML]
Python/postgres/psycopg2: getting ID of row just inserted
...nd, otherwise (as in my case) cursor.fetchone() will not have any results! By using only cursor .execute() without "anything" before that command you will receive an id.
– TheHeroOfTime
Mar 28 at 1:13
...
Cookies vs. sessions
...
sessions expiration can be set by any application easily. 3rd point is wrong. Plus you forgot the amount of data that can be stored in cookie vs session. That's a more significant point
– saran3h
Apr 11 '18 at 8:15
...
How can I remove or replace SVG content?
...solution:
d3.select("svg").remove();
This is a remove function provided by D3.js.
share
|
improve this answer
|
follow
|
...
How to implement has_many :through relationships with Mongoid and mongodb?
...h methods that act very similar to the has_many :through from ActiveRecord by returning a query proxy instead of an array of records:
class Physician
include Mongoid::Document
has_many :appointments
def patients
Patient.in(id: appointments.pluck(:patient_id))
end
end
class Appointment...
How to add Google Analytics Tracking ID to GitHub Pages
...Google Analytics Tracking ID to Already created Github pages (As requested by @avi-aryan )
Browse to your github pages branch - which would be something like - ( https://github.com/YourUserName/YourRepository/tree/gh-pages )
Then edit index.html from listed files
Now in within HEAD tag of index....
Disable a Maven plugin defined in a parent POM
... execution, Maven will do it implicitly (in a way not expected intuitively by you).
After posting found it is already in stackoverflow:
In a Maven multi-module project, how can I disable a plugin in one child?
share
...
Is there a “not in” operator in JavaScript for checking object properties?
...
As already said by Jordão, just negate it:
if (!(id in tutorTimes)) { ... }
Note: The above test if tutorTimes has a property with the name specified in id, anywhere in the prototype chain. For example "valueOf" in tutorTimes returns tru...
Select Multiple Fields from List in Linq
...(i => new { i.category_id, i.category_name })
.Distinct()
.OrderByDescending(i => i.category_name)
.ToArray();
Since you (apparently) need to store it for later use, you could use the GroupBy operator:
Data[] cats = listObject
.GroupBy(i => new { i.category_id, i.category...
Deserialize JSON with C#
...
@sports, you can do that in C# by deserializing to a dynamic, but performance is much better if you deserialize to a known type.
– PRMan
Dec 18 '18 at 21:36
...
Return a value if no rows are found in Microsoft tSQL
...Status, COUNT(s.id) AS StatusCount
FROM Sites S
WHERE S.Id = @SiteId
GROUP BY s.Status
UNION ALL --UNION BACK ON TABLE WITH NOT EXISTS
SELECT 'N/A' AS Status, 0 AS StatusCount
WHERE NOT EXISTS (SELECT 1
FROM Sites S
WHERE S.Id = @SiteId
)
...