大约有 30,000 项符合查询结果(耗时:0.0489秒) [XML]
Failed to serialize the response in Web API with Json
...matter), I highly recommend not passing back entities that come from a database. It is much more reliable and maintainable to use Models in which you have control of what the data looks like and not the database. That way you don't have to mess around with the formatters so much in the WebApiConfi...
Displaying the build date
...Info target = null)
{
var filePath = assembly.Location;
const int c_PeHeaderOffset = 60;
const int c_LinkerTimestampOffset = 8;
var buffer = new byte[2048];
using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
stream.Read(buffer, 0, 2048);
...
How to copy a selection to the OS X clipboard
...ntioned by @VincentG in his comment above, this indeed works with terminal-based versions of Vim, but those using tmux within the terminal will need to follow one of the solutions detailed here: stackoverflow.com/a/11421329/456584
– user456584
Jun 9 '14 at 15:0...
PostgreSQL Crosstab Query
...m is also limited to exactly three columns in the provided input query: row_name, category, value. There is no room for extra columns like in the 2-parameter alternative below.
Safe form
crosstab(text, text) with 2 input parameters:
SELECT *
FROM crosstab(
'SELECT section, status, ct
FR...
How to have stored properties in Swift, the same way I had on Objective-C?
...class ObjectAssociation<T: AnyObject> {
private let policy: objc_AssociationPolicy
/// - Parameter policy: An association policy that will be used when linking objects.
public init(policy: objc_AssociationPolicy = .OBJC_ASSOCIATION_RETAIN_NONATOMIC) {
self.policy = polic...
You can't specify target table for update in FROM clause
...
@siride: Other databases, such as MSSQL or Oracle, don't have this arbitrary restriction
– BlueRaja - Danny Pflughoeft
Mar 13 '13 at 19:14
...
iPhone Debugging: How to resolve 'failed to get the task for process'?
...selecting the profile for a build and letting it decide what signer to use based on that.
– Kendall Helmstetter Gelner
Jul 10 '14 at 15:01
...
Error Dropping Database (Can't rmdir '.test\', errno: 17)
... a strange file ".empty":
sh-3.2# ls -la data/test
total 0
drwxr-xr-x 3 _mysql wheel 102 Apr 15 12:36 .
drwxr-xr-x 11 _mysql wheel 374 Apr 15 12:28 ..
-rw-r--r-- 1 _mysql wheel 0 Mar 31 10:19 .empty
Once I rm'd the .empty file, the drop database command succeeded.
I don't know whe...
What is this 'Lambda' everyone keeps speaking of?
...nsive operations to get a user. Ajax for example
users[name] = user_from_ajax;
}
return users[name];
};
Later on, we may notice that we have a similar function:
var photos = [];
var getPhoto = function (name) {
if (! photo[name]) {
// expensive operations to get a use...
What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
... show you the name of the index, something like this:
CONSTRAINT region_ibfk_1 FOREIGN
KEY (country_id) REFERENCES
country (id) ON DELETE NO
ACTION ON UPDATE NO ACTION
Now simply issue an:
alter table region drop foreign key
region_ibfk_1;
And finally an:
alter table region d...