大约有 24,000 项符合查询结果（耗时：0.0307秒） [XML]
The object cannot be deleted because it was not found in the ObjectStateManager
... not attached (it was not loaded by the same context instance). Try this:
protected MyEntities sqlEntities;
public virtual void Delete(TEntity entity)
{
sqlEntities.Attach(entity);
sqlEntities.DeleteObject(entity);
sqlEntities.SaveChanges();
}
...
Fast Bitmap Blur For Android SDK
Currently in an Android application that I'm developing I'm looping through the pixels of an image to blur it. This takes about 30 seconds on a 640x480 image.
...
Regular expression to match URLs in Java
...lphas as well as a proper string beginning placeholder.
String regex = "^(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
This works too:
String regex = "\\b(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
Note:
String regex = ...
Width equal to content [duplicate]
I'm experiencing some trouble with the width property of CSS. I have some paragraphs inside a div. I'd like to make the width of the paragraphs equal to their content, so that their green background looks like a label for the text. What I get instead is that the paragraphs inherit the width of the d...
How can I make an “are you sure” prompt in a Windows batchfile?
I have a batch file that automates copying a bunch of files from one place to the other and back for me. Only thing is as much as it helps me I keep accidentally selecting that command off my command buffer and mass overwriting uncommited changes.
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How to get a string after a specific substring?
How can I get a string after a specific substring?
9 Answers
9
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How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
...d kept getting SSL_connect SYSCALL returned=5 errno=0 state=unknown state (https://rubygems.global.ssl.fastly.net/quick/Marshal.4.8/jekyll-3.0.0.gemspec.rz). This worked for me with gem install --http-proxy http://127.0.0.1:8580 jekyll
– Majid Fouladpour
Nov 8 ...
How to write one new line in Bitbucket markdown?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
cannot download, $GOPATH not set
...$ brew info go
go: stable 1.4.2 (bottled), HEAD
Go programming environment
https://golang.org
/usr/local/Cellar/go/1.4.2 (4676 files, 158M) *
Poured from bottle
From: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/go.rb
==> Options
--with-cc-all
Build with cross-compilers ...
How to use LINQ to select object with minimum or maximum property value
I have a Person object with a Nullable DateOfBirth property. Is there a way to use LINQ to query a list of Person objects for the one with the earliest/smallest DateOfBirth value.
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