大约有 37,000 项符合查询结果（耗时：0.0391秒） [XML]
Entity Framework code first unique column
...bute on your model:
[Index(IsUnique=true)]
You can find it in this namespace:
using System.ComponentModel.DataAnnotations.Schema;
If your model field is a string, make sure it is not set to nvarchar(MAX) in SQL Server or you will see this error with Entity Framework Code First:
Column 'x' ...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...立mongodb副本集测试文件夹
#存放整个mongodb文件
mkdir -p /data/mongodbtest/replset
#存放mongodb数据文件
mkdir -p /data/mongodbtest/replset/data
#进入mongodb文件夹
cd /data/mongodbtest
3、下载mongodb的安装程序包
wget http://fastdl.mongodb.org/...
Can C++ code be valid in both C++03 and C++11 but do different things?
Is it possible for C++ code to conform to both the C++03 standard and the C++11 standard, but do different things depending on under which standard it is being compiled?
...
How to delete from select in MySQL?
...ery within the same query. However, you can either SELECT then DELETE in separate queries, or nest another subquery and alias the inner subquery result (looks rather hacky, though):
DELETE FROM posts WHERE id IN (
SELECT * FROM (
SELECT id FROM posts GROUP BY id HAVING ( COUNT(id) > ...
Why use static_cast(x) instead of (int)x?
I've heard that the static_cast function should be preferred to C-style or simple function-style casting. Is this true? Why?
...
Meaning of Open hashing and Closed hashing
Open Hashing (Separate Chaining):
3 Answers
3
...
Git search for string in a single file's history
...tory of foo.rb for the string bar to see if it was ever defined in the past.
4 Answers
...
MySQL - ORDER BY values within IN()
I'm hoping to sort the items returned in the following query by the order they're entered into the IN() function .
6 Answe...
Custom attributes - Yea or nay?
Recently I have been reading more and more about people using custom attributes in their HTML tags, mainly for the purpose of embedding some extra bits of data for use in javascript code.
...
Why does sudo change the PATH?
This is the PATH variable without sudo:
17 Answers
17
...