大约有 16,000 项符合查询结果(耗时:0.0324秒) [XML]
Entity Framework is Too Slow. What are my options? [closed]
...y not use both? EF handles stored procedures and raw SQL just fine. I just converted a LINQ-to-SQL query that took 10+ seconds into a SP that takes ~1 second, but I'm not gonna throw all LINQ-to-SQL out. It saved a LOT of time in other simpler cases, with less code and less room for error and the qu...
Best Practice: Access form elements by HTML id or name attribute?
... normal JS object, and elements.foo or elements["foo"] is actually getting converted to elements.namedItem("foo"). i.e. you're calling a DOM-defined function, not referencing a JS property!
– Doin
Jul 21 '19 at 16:36
...
How do I avoid capturing self in blocks when implementing an API?
I have a working app and I'm working on converting it to ARC in Xcode 4.2. One of the pre-check warnings involves capturing self strongly in a block leading to a retain cycle. I've made a simple code sample to illustrate the issue. I believe I understand what this means but I'm not sure the "corre...
Install Gem from Github Branch?
... the transmits data without encryption warning that I'm looking to avoid. Converting to a git: identifier with https might not be enough, as I also have a branch to specify.
– Pysis
Dec 7 '17 at 15:07
...
How to get RelativeLayout working with merge and include?
I have been trying for a few days now to make my layouts more efficient by converting from using several levels of nested LinearLayouts to one RelativeLayout and have come across a few problems that I haven not been able to find a workaround for...
...
iOS 7 TextKit - How to insert images inline with text?
...
@bilobatum's code converted to Swift for those in need:
let attributedString = NSMutableAttributedString(string: "like after")
let textAttachment = NSTextAttachment()
textAttachment.image = UIImage(named: "whatever.png")
let attrStringWith...
How to implement a many-to-many relationship in PostgreSQL?
... product (
product_id serial PRIMARY KEY -- implicit primary key constraint
, product text NOT NULL
, price numeric NOT NULL DEFAULT 0
);
CREATE TABLE bill (
bill_id serial PRIMARY KEY
, bill text NOT NULL
, billdate date NOT NULL DEFAULT CURRENT_DATE
);
CREATE TABLE bill_product...
Cannot change column used in a foreign key constraint
...food
DROP FOREIGN KEY fk_fav_food_person_id,
MODIFY person_id SMALLINT UNSIGNED;
Now you can change you person_id
ALTER TABLE person MODIFY person_id SMALLINT UNSIGNED AUTO_INCREMENT;
recreate foreign key
ALTER TABLE favorite_food
ADD CONSTRAINT fk_fav_food_person_id FOREIGN KEY (...
When is JavaScript's eval() not evil?
... (for spreadsheet-like functionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result.
...
Throwing the fattest people off of an overloaded airplane.
...d a MinHeap class. (Yes, my example is in C#. I think you get the idea.)
int targetTotal = 3000;
int totalWeight = 0;
// this creates an empty heap!
var myHeap = new MinHeap<Passenger>(/* need comparer here to order by weight */);
foreach (var pass in passengers)
{
if (totalWeight < t...