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How do I check if file exists in Makefile so I can delete it?
...
@holms its a bash syntax. By escaping the new lines it allows it to be handled as a single bash command. By default in make a new line would be a new bash command. The major caveat of this, other than the annoyance of having lots of \ at the end of lines is that eve...
Spring mvc @PathVariable
...dView addForm(@PathVariable String type ){
ModelAndView modelAndView = new ModelAndView();
modelAndView.setViewName("addContent");
modelAndView.addObject("typelist",contentPropertyDAO.getType() );
modelAndView.addObject("property",contentPropertyDAO.get(type,0) );
return modelAnd...
PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
...nsaction), persist(account) will be invoked as well.
But only transient (new) entities may be passed to persist (Transaction in this case). The detached (or other non-transient state) ones may not (Account in this case, as it's already in DB).
Therefore you get the exception "detached entity pas...
Difference between filter and filter_by in SQLAlchemy
...
I'm new to sqlalchemy so excuse me if this is a stupid question, but filter_by() doesn't seem to allow for even the very simple conditions such as "price >= 100". So, why have filter_by() function anyway, if you only can use i...
How do you mock out the file system in C# for unit testing?
...) to mock file and you instanciate ManageFile like:
var mockFileSysteme = new MockFileSystem();
var mockFileData = new MockFileData("File content");
mockFileSysteme.AddFile(mockFilePath, mockFileData );
var manageFile = new ManageFile(mockFileSysteme);
...
The term 'Update-Database' is not recognized as the name of a cmdlet
..."EntityFramework" -reinstall
If you still face the same issue.
create a new Web Project and run the below command in nuget.
(Note : no need to create the new Project in the same solution or
same location.)
// This will update EF to latest version(including the tools)
// if you want to u...
How to override the copy/deepcopy operations for a Python object?
... (the shallow copy) is pretty easy in your case...:
def __copy__(self):
newone = type(self)()
newone.__dict__.update(self.__dict__)
return newone
__deepcopy__ would be similar (accepting a memo arg too) but before the return it would have to call self.foo = deepcopy(self.foo, memo) for any ...
Setting the default value of a DateTime Property to DateTime.Now inside the System.ComponentModel De
...n the code first migration.
CreateTable(
"dbo.SomeTable",
c => new
{
TheDateField = c.DateTime(defaultValueSql: "GETDATE()")
});
I don't like the often reference solution of setting it in the entity class constructor because if anything other than Entity Fra...
How do you simulate Mouse Click in C#?
...orPos(out currentMousePoint);
if (!gotPoint) { currentMousePoint = new MousePoint(0, 0); }
return currentMousePoint;
}
public static void MouseEvent(MouseEventFlags value)
{
MousePoint position = GetCursorPosition();
mouse_event
((int)value,
...
How to use gitignore command in git
... file:
echo 'application/cache' >> .gitignore
Be careful about new lines
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