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What is the correct way to represent null XML elements?
...le would be elements of type decimal. If you want them to be empty you can union an enumerated string that only allows "" and a decimal, or use a decimal that is nillable.
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Copy values from one column to another in the same table
...ble name and it's surrounded by grave accent (aka back-ticks `) as this is MySQL convention to escape keywords (and TABLE is a keyword in that case).
BEWARE, that this is pretty dangerous query which will wipe everything in column test in every row of your table replacing it by the number (regardle...
MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
... Programmatically
http://support.microsoft.com/kb/131284/en-us
19. 如何在CListView中使用CListCtrl的派生类
http://www.codeguru.com/cpp/controls/listview/introduction/article.php/c919/
20. listctrl的subitem添加图标
m_list.SetExtendedStyle(LVS_EX_SUBITEMIMAGES);
...
Can someone explain the right way to use SBT?
...use sbt is:
Use sbt-extras - just get the shell script and add it to the root of you project
Create a project folder with a MyProject.scala file for setting up sbt. I much prefer this over the build.sbt approach - it's scala and is more flexible
Create a project/plugins.sbt file and add the approp...
When is it right for a constructor to throw an exception?
... edited Jun 16 '19 at 0:39
unional
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answered Sep 16 '08 at 22:11
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How to make a programme continue to run after log out from ssh? [duplicate]
I have a program that takes a lot of time to finish.
It is running as root over ssh.
I want it to continue to run after I logout,is this possible and how would I achieve this?
...
Class type check in TypeScript
...t's just checking if a object has a certain property. This may be nice for union types so works for this specific case, but its not really doable to create a "isThingy" for everything like this. Also if both fish and bird could swim you're doomed. I'm glad I'm using Haxe which has a reliable type ...
How do I use su to execute the rest of the bash script as that user?
...Jadhav, he used it here just to show the ID of the current user, the ID of root is 0, so the first id will show you some number, but the second one will definetly show 0 (because the second one was executed inside a block run by root). You can user whoami instead of id which will return the name ins...
How to log something in Rails in an independent log file?
...ActiveRecord::Base
def my_logger
@@my_logger ||= Logger.new("#{Rails.root}/log/my.log")
end
def before_save
my_logger.info("Creating user with name #{self.name}")
end
end
Here I used a class attribute to memoize the logger. This way it won't be created for every single User object...
android: move a view on touch move (ACTION_MOVE)
...nds Activity implements View.OnTouchListener {
TextView _view;
ViewGroup _root;
private int _xDelta;
private int _yDelta;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
_root = (ViewGroup)findViewById(R.id...