This example uses the Dropbox .NET library to get a shared link for a file, either by creating a new one, or retrieving an existing one:
SharedLinkMetadata sharedLinkMetadata;
try {
sharedLinkMetadata = await this.client.Sharing.CreateSharedLinkWithSettingsAsync (path);
} catch (ApiException...
ALTER TABLE Employees
DROP COLUMN salary;
This will not only delete information from that column, but will drop the column salary from table employees(the column will no more exist).
ALTER TABLE Employees
DROP CONSTRAINT DefaultSalary
This Drops a constraint called DefaultSalary from the employees table definition.
Note:-
Ensure that constraints of the column are dropped before dropping a column.
This example of the Sortable using a Placeholder is common usage. Sortable is applied to a group of DOM elements, allowing the user to move items around in the list via Drag'n Drop style actions.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8&q...
unique drops duplicates so that each element in the result is unique (only appears once):
x = c(2, 1, 1, 2, 1)
unique(x)
# 2 1
Values are returned in the order they first appeared.
duplicated tags each duplicated element:
duplicated(x)
# FALSE FALSE TRUE TRUE TRUE
anyDuplicated(x) >...
MySQL3.19
DROP TABLE IF EXISTS MyTable;
PostgreSQL8.x
DROP TABLE IF EXISTS MyTable;
SQL Server2005
If Exists(Select * From Information_Schema.Tables
Where Table_Schema = 'dbo'
And Table_Name = 'MyTable')
Drop Table dbo.MyTable
SQLite3.0
DROP TABLE IF EXI...
itertools.dropwhile enables you to take items from a sequence after a condition first becomes False.
def is_even(x):
return x % 2 == 0
lst = [0, 2, 4, 12, 18, 13, 14, 22, 23, 44]
result = list(itertools.dropwhile(is_even, lst))
print(result)
This outputs [13, 14, 22, 23, 44].
...
You can implement the swipe-to-dismiss and drag-and-drop features with the RecyclerView without using 3rd party libraries.
Just use the ItemTouchHelper class included in the RecyclerView support library.
Instantiate the ItemTouchHelper with the SimpleCallback callback and depending on which functi...
Use drop_duplicates:
In [216]: df = pd.DataFrame({'A':[1,2,3,3,2],
...: 'B':[1,7,3,0,8]})
In [217]: df
Out[217]:
A B
0 1 1
1 2 7
2 3 3
3 3 0
4 2 8
# keep only the last value
In [218]: df.drop_duplicates(subset=['A'], keep='last')
Out[218]:
...
DROP INDEX ix_cars_employee_id ON Cars;
We can use command DROP to delete our index. In this example we will DROP the index called ix_cars_employee_id on the table Cars.
This deletes the index entirely, and if the index is clustered, will remove any clustering. It cannot be rebuilt without rec...
Create function in MyComponent.php
namespace app\components;
use Yii;
use yii\base\Component;
use yii\base\InvalidConfigException;
use yii\helpers\Url;
use yii\helpers\ArrayHelper;
use app\models\User;
class MyComponent extends Component
...
