大约有 32,000 项符合查询结果（耗时：0.0415秒） [XML]
The model used to open the store is incompatible with the one used to create the store
...el select your new version of data model for current data model
THAT'S NOT ALL ) You should perform so called "light migration".
Go to your AppDelegate and find where the persistentStoreCoordinator is being created
Find this line if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteS...
How to set default values in Rails?
...
"Correct" is a dangerous word in Ruby. There's usually more than one way to do anything. If you know you'll always want that default value for that column on that table, setting them in a DB migration file is the easiest way:
class SetDefault < ActiveRecord::Migration
...
How do I ZIP a file in C#, using no 3rd-party APIs?
...file extension to associate the download file with our desktop app. One small problem we ran into was that its not possible to just use a third-party tool like 7-zip to create the zip files because the client side code can't open it -- ZipPackage adds a hidden file describing the content type of ea...
Ruby, remove last N characters from a string?
...alternative, and hope it helps people who land here. In fact, I've covered all this in the question - I'm hoping this method accepts a regex soon, though there's a perfect alternative for your case right below this.
– SRack
Sep 2 '19 at 15:07
...
How do I remove a property from a JavaScript object?
...t object, then that object will, of course, not be garbage collected until all references to it have disappeared.
delete will only work on properties whose descriptor marks them as configurable.
share
|
...
How to define “type disjunction” (union types)?
...str")
case _: Int => println("int")
}
}
And that's it. You can call foo(5) or foo("abc"), and it will work, but try foo(true) and it will fail. This could be side-stepped by the client code by creating a StringOrInt[Boolean], unless, as noted by Randall below, you make StringOrInt a seale...
How do I add a Fragment to an Activity with a programmatically created content view
...nt to add a Fragment to an Activity that implements its layout programmatically. I looked over the Fragment documentation but there aren't many examples describing what I need. Here is the type of code I tried to write:
...
This version of the application is not configured for billing through Google Play
...ay, you must wait a few hours before the in-app products will respond normally and allow for regular purchases.
Export and sign APK. Unsigned APK trying to make purchases will get error.
share
|
i...
QuotaExceededError: Dom exception 22: An attempt was made to add something to storage that exceeded
...ode browsing. While in private browsing, local storage is not available at all.
One solution is to warn the user that the app needs non-private mode to work.
UPDATE: This has been fixed in Safari 11, so the behaviour is now aligned with other browsers.
...
Moq mock method with out specifying input parameter
...le parameter? Is it possible to just say "Anything where the types fit for all parameters"?
– Brandon
Mar 2 '16 at 19:13
...