大约有 40,000 项符合查询结果（耗时：0.0498秒） [XML]
How do I use Linq to obtain a unique list of properties from a list of objects?
...
IEnumerable<int> ids = list.Select(x=>x.ID).Distinct();
share
|
improve this answer
|
follow
...
Should a “static final Logger” be declared in UPPER-CASE?
...les:
// Constants
static final int NUMBER = 5;
static final ImmutableList<String> NAMES = ImmutableList.of("Ed", "Ann");
static final Joiner COMMA_JOINER = Joiner.on(','); // because Joiner is immutable
static final SomeMutableType[] EMPTY_ARRAY = {};
enum SomeEnum { ENUM_CONSTANT }
// Not ...
Best way to create unique token in Rails?
...ss for the model (when using Ruby 1.9 and ActiveRecord):
class ModelName < ActiveRecord::Base
before_create :generate_token
protected
def generate_token
self.token = loop do
random_token = SecureRandom.urlsafe_base64(nil, false)
break random_token unless ModelName.exists...
omp parallel vs. omp parallel for
...
I don't think there is any difference, one is a shortcut for the other. Although your exact implementation might deal with them differently.
The combined parallel worksharing constructs are a shortcut for
specifying a parallel construct containing one worksharing construct
and no other st...
MySQL query to get column names?
...o list the names of columns:
$sql = "SHOW COLUMNS FROM your-table";
$result = mysqli_query($conn,$sql);
while($row = mysqli_fetch_array($result)){
echo $row['Field']."<br>";
}
For Details about output of SHOW COLUMNS FROM TABLE visit: MySQL Refrence.
...
Get user info via Google API
... get the information from - https://www.googleapis.com/oauth2/v1/userinfo?alt=json
It has loads of stuff - including name, public profile url, gender, photo etc.
share
|
improve this answer
...
git: Switch branch and ignore any changes without committing
...With Git 2.23 (August 2019) and the new command git switch:
git switch -f <branch-name>
(-f is short for --force, which is an alias for --discard-changes)
Proceed even if the index or the working tree differs from HEAD.
Both the index and working tree are restored to match the switching...
What are some compelling use cases for dependent method types?
...h used to be an experimental feature before, has now been enabled by default in the trunk , and apparently this seems to have created some excitement in the Scala community.
...
How do I detect the Python version at runtime? [duplicate]
...k that you are running Python 3.x, use
import sys
if sys.version_info[0] < 3:
raise Exception("Must be using Python 3")
Here, sys.version_info[0] is the major version number. sys.version_info[1] would give you the minor version number.
In Python 2.7 and later, the components of sys.versio...
SQLite DateTime comparison
I can't seem to get reliable results from the query against a sqlite database using a datetime string as a comparison as so:
...