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Delete column from SQLite table
...be done:
BEGIN TRANSACTION;
CREATE TEMPORARY TABLE t1_backup(a,b);
INSERT INTO t1_backup SELECT a,b FROM t1;
DROP TABLE t1;
CREATE TABLE t1(a,b);
INSERT INTO t1 SELECT a,b FROM t1_backup;
DROP TABLE t1_backup;
COMMIT;
sha...
How do you create a dropdownlist from an enum in ASP.NET MVC?
...@class = "form-control" })
For MVC 5 and lower
I rolled Rune's answer into an extension method:
namespace MyApp.Common
{
public static class MyExtensions{
public static SelectList ToSelectList<TEnum>(this TEnum enumObj)
where TEnum : struct, IComparable, IFormatta...
Delimiters in MySQL
...ndividual statements terminate with ; */
CREATE TABLE tablea (
col1 INT,
col2 INT
);
INSERT INTO tablea
SELECT * FROM table1;
CREATE TABLE tableb (
col1 INT,
col2 INT
);
INSERT INTO tableb
SELECT * FROM table2;
/* whole procedure ends with the custom deli...
Difference between virtual and abstract methods [duplicate]
...tation.
public abstract class E
{
public abstract void AbstractMethod(int i);
public virtual void VirtualMethod(int i)
{
// Default implementation which can be overridden by subclasses.
}
}
public class D : E
{
public override void AbstractMethod(int i)
{
/...
SQL variable to hold list of integers
...ug someone else's SQL reports and have placed the underlying reports query into a query windows of SQL 2012.
8 Answers
...
Why use the yield keyword, when I could just use an ordinary IEnumerable?
...er generated custom ---gunk--- code. And less developer time writing and maintaining. (Of course, that was just this example)
– sehe
Dec 28 '12 at 11:57
4
...
Tuples( or arrays ) as Dictionary keys in C#
... keys, but that did not work, and I don't know what else to do. At this point I am considering making a Dictionary of Dictionaries of Dictionaries, but that would probably not be very pretty to look at, though it is how I would do it in javascript.
...
Simplest way to do a recursive self-join?
...
Using CTEs you can do it this way
DECLARE @Table TABLE(
PersonID INT,
Initials VARCHAR(20),
ParentID INT
)
INSERT INTO @Table SELECT 1,'CJ',NULL
INSERT INTO @Table SELECT 2,'EB',1
INSERT INTO @Table SELECT 3,'MB',1
INSERT INTO @Table SELECT 4,'SW',2
INSERT ...
Git push error '[remote rejected] master -> master (branch is currently checked out)'
...
You can simply convert your remote repository to bare repository (there is no working copy in the bare repository - the folder contains only the actual repository data).
Execute the following command in your remote repository folder:
git ...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...全局变量：
清单 1. 我们的简单分配程序的全局变量
int has_initialized = 0;
void *managed_memory_start;
void *last_valid_address;
如前所述，被映射的内存的边界（最后一个有效地址）常被称为系统中断点或者 当前中断点。 在很多 UNIX&r...