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Why can't I have abstract static methods in C#?
...{
}
If you call B.Test, like this:
class Program
{
static void Main(string[] args)
{
B.Test();
}
}
Then the actual code inside the Main method is as follows:
.entrypoint
.maxstack 8
L0000: nop
L0001: call void ConsoleApplication1.A::Test()
L0006: nop
L0007: ret
As you ...
How to create composite primary key in SQL Server 2008
...
CREATE TABLE UserGroup
(
[User_Id] INT NOT NULL,
[Group_Id] INT NOT NULL
CONSTRAINT PK_UserGroup PRIMARY KEY NONCLUSTERED ([User_Id], [Group_Id])
)
share
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Rails has_and_belongs_to_many migration
...
You need to add a separate join table with only a restaurant_id and user_id (no primary key), in alphabetical order.
First run your migrations, then edit the generated migration file.
Rails 3
rails g migration create_restaurants_users_table
Rails 4:
rails g migration create_rest...
uppercase first character in a variable with bash
I want to uppercase just the first character in my string with bash.
15 Answers
15
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How to calculate time in hours between two dates in iOS
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-(NSMutableString*) timeLeftSinceDate: (NSDate *) dateT {
NSMutableString *timeLeft = [[NSMutableString alloc]init];
NSDate *today10am =[NSDate date];
NSInteger seconds = [today10am timeIntervalSinceDate:dateT];
NSIn...
How to put more than 1000 values into an Oracle IN clause [duplicate]
...000 items in a static IN clause? I have a comma delimited list of many of IDs that I want to use in an IN clause, Sometimes this list can exceed 1000 items, at which point Oracle throws an error. The query is similar to this...
...
Convert Unix timestamp to a date string
Is there a quick, one-liner way to convert a Unix timestamp to a date from the Unix command line?
11 Answers
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“Comparison method violates its general contract!”
...ent value when comparing objects. For example, you might want to perform a string compare and force empty strings to sort to the end with:
if ( one.length() == 0 ) {
return 1; // empty string sorts last
}
if ( two.length() == 0 ) {
return -1; // empty stri...
Uppercase or lowercase doctype?
...110, in XML it is production 28. In both cases it is declared as the fixed string "DOCTYPE" (which is not a tag, it is a keyword). So in the canonical definitions in the respective SGML and XML standards it is always uppercase. If you find software that permits a lowercase "doctype" that software is...
Understanding Apache's access log
...ny is present, and "-" otherwise.
User-agent is the browser identification string.
The complete(?) list of formatters can be found here. The same section of the documentation also lists other common log formats; readers whose logs don't look quite like this one may find the pattern their Apache co...