大约有 46,000 项符合查询结果（耗时：0.0683秒） [XML]
Cannot create an NSPersistentStoreCoordinator with a nil model
...and I'm getting the following error when running my code on my device, but it works fine on the simulator..
27 Answers
...
What's the algorithm to calculate aspect ratio?
I plan to use it with JavaScript to crop an image to fit the entire window.
18 Answers
...
Camera orientation issue in Android
...
There are quite a few similar topics and issues around here. Since you're not writing your own camera, I think it boils down to this:
some devices rotate the image before saving it, while others simply add the orientation tag in the pho...
How to convert Strings to and from UTF8 byte arrays in Java
In Java, I have a String and I want to encode it as a byte array (in UTF8, or some other encoding). Alternately, I have a byte array (in some known encoding) and I want to convert it into a Java String. How do I do these conversions?
...
Change MySQL default character set to UTF-8 in my.cnf?
...default-character-set=utf8
[mysqld]
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server = utf8
If you want to change the character set for an existing DB, let me know... your question didn't specify it directly so I am not sure if that's what you want to do.
...
Getting the error “Missing $ inserted” in LaTeX
I try to write the following in latex:
10 Answers
10
...
The model backing the context has changed since the database was created
...
Now it's:
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
Database.SetInitializer<YourDbContext>(null);
base.OnModelCreating(modelBuilder);
}
in your YourDbContext.cs file.
...
How to insert element into arrays at specific position?
...follow
|
edited Dec 12 '18 at 11:16
outis
66.3k1717 gold badges125125 silver badges191191 bronze badges
...
How can I use Timer (formerly NSTimer) in Swift?
...e)
// Swift 2.2 selector syntax
let timer = NSTimer.scheduledTimerWithTimeInterval(0.4, target: self, selector: #selector(MyClass.update), userInfo: nil, repeats: true)
// Swift <2.2 selector syntax
let timer = NSTimer.scheduledTimerWithTimeInterval(0.4, target: self, selector: "u...
Efficiently updating database using SQLAlchemy ORM
...
SQLAlchemy's ORM is meant to be used together with the SQL layer, not hide it. But you do have to keep one or two things in mind when using the ORM and plain SQL in the same transaction. Basically, from one side, ORM data modifications will only hit the database when you ...