大约有 15,571 项符合查询结果（耗时：0.0358秒） [XML]
What is the difference between exit and return? [duplicate]
...can get; the conventional usage is 0 for success or any other value for an error).
The parameter of the return statement is whatever the return type of the function is. If the function returns void, you can omit the return at the end of the function.
Last point, exit() come in two flavors _exit() an...
In Java, when should I create a checked exception, and when should it be a runtime exception? [dupli
...pections for recoverable conditions and runtime exceptions for programming errors (Item 58 in 2nd edition).
So in this case, if you really want to use exceptions, it should be a checked one. (Unless the documentation of transferTo() made it very clear that the method must not be called without che...
Overload with different return type in Java?
... new StringBuilder("Hello " + name);
}
//This will not work
//Error: Duplicate method greet() in type B
public StringBuilder greet() {
return new StringBuilder("Hello Tarzan");
}
}
share
...
Sql query to insert datetime in SQL Server
... sp_executesql @sql
end try
begin catch
print 'Error in language ' + @Alias
print ERROR_MESSAGE()
end catch
end
select @LangID = min(langid)
from sys.syslanguages
where langid > @LangID
end
According to the String Literal Date and...
In the shell, what does “ 2>&1 ” mean?
...iptor 1 is the standard output (stdout).
File descriptor 2 is the standard error (stderr).
Here is one way to remember this construct (although it is not entirely accurate): at first, 2>1 may look like a good way to redirect stderr to stdout. However, it will actually be interpreted as "redirect...
How to tell if a string is not defined in a Bash shell script
...o use a default value, ${foo:=default} to assign the default value, ${foo:?error message} to display an error message if foo is unset, etc.
– Jouni K. Seppänen
Oct 23 '08 at 4:54
...
A potentially dangerous Request.Path value was detected from the client (*)
I am receiving the rather self explanatory error:
8 Answers
8
...
Relative imports in Python 3
...)[0] returns empty string. This is why there's empty string literal in the error description:
SystemError: Parent module '' not loaded, cannot perform relative import
The relevant part of the CPython's PyImport_ImportModuleLevelObject function:
if (PyDict_GetItem(interp->modules, package) == ...
Date query with ISODate in mongodb doesn't seem to work
...ow:
db.foo.find({dt: {"$date": "2012-01-01T15:00:00.000Z"}})
you'll get error:
error: { "$err" : "invalid operator: $date", "code" : 10068 }
Try this:
db.mycollection.find({
"dt" : {"$gte": new Date("2013-10-01T00:00:00.000Z")}
})
or (following comments by @user3805045):
db.mycollectio...
Check whether user has a Chrome extension installed
...{version: '1.0'} and not {version: 1.0} or else you'll get 'Uncaught SyntaxError: Unexpected number' in extension Inspect view console.
– ET-CS
Jan 26 '15 at 5:01
1
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