大约有 30,000 项符合查询结果（耗时：0.0504秒） [XML]
Maximum Length of Command Line String
In Windows, what is the maximum length of a command line string? Meaning if I specify a program which takes arguments on the command line such as abc.exe -name=abc
...
Using IQueryable with Linq
...ECT c.Id, c.Name
FROM [dbo].[Customer] c
WHERE c.Region = 'North'
(the string might end up as a parameter; I can't remember)
None of this would be possible if we had just used a delegate. And this is the point of Queryable / IQueryable<T>: it provides the entry-point for using expression ...
How to match all occurrences of a regex
...
Using scan should do the trick:
string.scan(/regex/)
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Sequelize.js: how to use migrations and sync
...uelize init
...
sequelize model:create --name User --attributes first_name:string,last_name:string,bio:text
This will create both model AND migration. Then, manually merge your existing models with generated with sequelize-cli, and do the same with migrations. After doing this, wipe database (if p...
Rich vs Anemic Domain Model [closed]
...gt;();
}
public ICollection<Order> Orders { get; set; }
public string SalesPersonId { get; set; }
public ShippingAddress ShippingAddress { get; set; }
}
public abstract class Person
{
public int Id { get; set; }
public string Title { get; set; }
public string FirstName { get; set...
Should I implement __ne__ in terms of __eq__ in Python?
... work (assuming SQLAlchemy knows how to insert MyClassWithBadNE into a SQL string at all; this can be done with type adapters without MyClassWithBadNE having to cooperate at all), passing the expected proxy object to filter, while:
results = session.query(MyTable).filter(MyClassWithBadNE() != MyTa...
Why does MYSQL higher LIMIT offset slow the query down?
....com/2013/06/19/3-ways-to-optimize-for-paging-in-mysql/
It works too with strings
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DateTime.ToString(“MM/dd/yyyy HH:mm:ss.fff”) resulted in something like “09/14/2013 07.20.31.371”
...ve way in custom date and time formats.
How can I make sure the result string is delimited by colon instead of dot?
I'd suggest specifying CultureInfo.InvariantCulture:
string text = dateTime.ToString("MM/dd/yyyy HH:mm:ss.fff",
CultureInfo.InvariantCulture);
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Qt events and signal/slots
...resents a new abstraction: a widget that acts like a button, but with some extra functionality. We added this functionality very conveniently:
Since we reimplemented a virtual, our implementation automatically became encapsulated in our class. If Qt's designers had made keyPressEvent a signal, we ...
Match multiple cases classes in scala
...
Looks like you don't care about the values of the String parameters, and want to treat B and C the same, so:
def matcher(l: Foo): String = {
l match {
case A() => "A"
case B(_) | C(_) => "B"
case _ => "default"
}
}
If you must, must, must extract ...