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Unique Constraint in Entity Framework Code First
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CreateIndex("TableName", new string[2] { "Column1", "Column2" }, true, "IX_UniqueColumn1AndColumn2");
Something like that:
namespace Sample.Migrations
{
using System;
using System.Data.Entity.Migrations;
public partial class TableName_SetUniqueCompositeIndex : DbMigration
{
...
Convert.ChangeType() fails on Nullable Types
...a series of blog posts including this at http://www.endswithsaurus.com/2010_07_01_archive.html (Scroll down to the Addendum, @JohnMacintyre actually spotted the bug in my original code which led me down the same path you're on now). I have a couple of small modifications since that post that includ...
Why doesn't std::queue::pop return value.?
... T pop()
{
auto x = elements[top_position];
// TODO: call destructor for elements[top_position] here
--top_position; // alter queue state here
return x; // calls T(const T&) which may throw
}
If the copy constructor of T throws on return, you ha...
How to get elements with multiple classes
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It's actually very similar to jQuery:
document.getElementsByClassName('class1 class2')
MDN Doc getElementsByClassName
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imp...
Export a stash to another computer
...answer one thing I was wondering was how to select a particular stash from all my stashes. The answer to that is here: stackoverflow.com/a/1910142/1148702 . In this case I ended up doing: git stash show "stash@{0}" -p > patch instead of the OP's second shell command.
– Tim A...
Parse JSON in JavaScript? [duplicate]
... Note to reviewers: please thoroughly check peer edits before allowing them, as your actions may cause unwanted side-effects for users copying and pasting code from answers.
– Andy E
Apr 2 '13 at 9:42
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Vim Insert Mode on Mac OS X
..., or perhaps Insert is mapped elsewhere (use inoremap instead of imap to fix this).
– smathy
Sep 5 '16 at 16:48
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How do I use regex in a SQLite query?
I'd like to use a regular expression in sqlite, but I don't know how.
17 Answers
17
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How does std::move() transfer values into RValues?
...ch I cleaned up a little bit):
template <typename T>
typename remove_reference<T>::type&& move(T&& arg)
{
return static_cast<typename remove_reference<T>::type&&>(arg);
}
Let's start with the easier part - that is, when the function is called wi...
How to run crontab job every week on Sunday
...5. Entry: Weekday when the process will be started [0-6] [0 is Sunday]
#
# all x min = */x
So according to this your 5 8 * * 0 would run 8:05 every Sunday.
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