大约有 13,916 项符合查询结果（耗时：0.0282秒） [XML]
How can I safely create a nested directory?
...st elegant way to check if the directory a file is going to be written to exists, and if not, create the directory using Python? Here is what I tried:
...
Is it bad practice to return from within a try catch finally block?
... code simpler to understand. You shouldn't care as finally block will get executed if a return statement is encountered.
share
|
improve this answer
|
follow
|...
Is there any difference between DECIMAL and NUMERIC in SQL Server?
...only difference that I can find is that in the SQL-92 standard decimal is exactly as precise as declared, while numeric is at least as precise as declared. In SQL Server both are exactly as precise as declared, i.e. it doesn't use the flexibility for numeric that the standard allows.
...
Sorting related items in a Django template
...
You need to specify the ordering in the attendee model, like this. For example (assuming your model class is named Attendee):
class Attendee(models.Model):
class Meta:
ordering = ['last_name']
See the manual for further reference.
EDIT. Another solution is to add a property to you...
async/await - when to return a Task vs void?
...
1) Normally, you would want to return a Task. The main exception should be when you need to have a void return type (for events). If there's no reason to disallow having the caller await your task, why disallow it?
2) async methods that return void are special in another aspect: ...
in_array multiple values
...set", and the keys you are searching for the other.
Check if ALL needles exist
function in_array_all($needles, $haystack) {
return empty(array_diff($needles, $haystack));
}
echo in_array_all( [3,2,5], [5,8,3,1,2] ); // true, all 3, 2, 5 present
echo in_array_all( [3,2,5,9], [5,8,3,1,2] ); // f...
dealloc in Swift
...urces, you might need to perform some additional clean-up
yourself. For example, if you create a custom class to open a file and
write some data to it, you might need to close the file before the
class instance is deallocated.
...
When NOT to use yield (return) [duplicate]
...ral useful questions here on SO about the benefits of yield return . For example,
11 Answers
...
Why does Math.Floor(Double) return a value of type Double?
...eed to get the left hand side integer value from a decimal or double. For Ex: I need to get the value 4 from 4.6. I tried using Math.Floor function but it's returning a double value, for ex: It's returning 4.0 from 4.6. The MSDN documentation says that it returns an integer value. Am I missing somet...
How would I run an async Task method synchronously?
... here
public static class AsyncHelpers
{
/// <summary>
/// Execute's an async Task<T> method which has a void return value synchronously
/// </summary>
/// <param name="task">Task<T> method to execute</param>
public static void RunSync(Func<...