大约有 25,000 项符合查询结果（耗时：0.0357秒） [XML]
Django Model - Case-insensitive Query / Filtering
...
I solved it like this:
MyClass.objects.filter(name__iexact=my_parameter)
There is even a way to use it for substring search:
MyClass.objects.filter(name__icontains=my_parameter)
There's a link to the documentation.
...
How much is the overhead of smart pointers compared to normal pointers in C++?
...
std::unique_ptr has memory overhead only if you provide it with some non-trivial deleter.
std::shared_ptr always has memory overhead for reference counter, though it is very small.
std::unique_ptr has time overhead only during constru...
Convert generic List/Enumerable to DataTable?
...formance. If you want to restrict it to particular members (or enforce the order), then you can do that too:
IEnumerable<SomeType> data = ...
DataTable table = new DataTable();
using(var reader = ObjectReader.Create(data, "Id", "Name", "Description")) {
table.Load(reader);
}
Editor's Dis/...
Read url to string in few lines of java code
... Scanner(new URL(requestURL).openStream(),
StandardCharsets.UTF_8.toString()))
{
scanner.useDelimiter("\\A");
return scanner.hasNext() ? scanner.next() : "";
}
}
share
|
...
Difference between del, remove and pop on lists
...so that del is slightly faster, but for a different reason: the lookup for __delitem__ on a type implemented in C happens by index rather than by name, whereas pop needs to be looked up following the whole descriptor protocol. The execution of the functions themselves should take the same amount of ...
Getting “Skipping JaCoCo execution due to missing execution data file” upon executing JaCoCo
...ue to an <argLine> configuration I added on maven-surefire-plugin in order to increase memory for Integration tests Configuring <argLine>${argLine} --my--additional-arguments--here-- </argLine> solved the problem
– Massimo Da Ros
Sep 18 '19 a...
How do I use Ruby for shell scripting?
...rectory, including current dir.
#=> array of relative names
File.expand_path('~/file.txt') #=> "/User/mat/file.txt"
File.dirname('dir/file.txt') #=> 'dir'
File.basename('dir/file.txt') #=> 'file.txt'
File.join('a', 'bunch', 'of', 'strings') #=> 'a/bunch/of/strings'
__FILE__ #=> t...
How and where are Annotations used in Java?
...de a method inherited from a base class. This annotation may be helpful in order to avoid the common mistake, where you actually intend to override a method, but fail to do so, because the signature given in your method does not match the signature of the method being overridden:
class Foo {
@...
Git Tag list, display commit sha1 hashes
...ed but missing in it, like full tag details and tags in the commit history order.
I like this instead, which gives exactly what I want but can't get from git tag:
git log --oneline --decorate --tags --no-walk
This gives a very nice color-coded view of the tags in the reverse chronological order ...
Static methods - How to call a method from another method?
...
class.method should work.
class SomeClass:
@classmethod
def some_class_method(cls):
pass
@staticmethod
def some_static_method():
pass
SomeClass.some_class_method()
SomeClass.some_static_method()
sha...