大约有 7,000 项符合查询结果（耗时：0.0190秒） [XML]
How to run only one task in ansible playbook?
... tags:
- packages
- template: src=templates/src.j2 dest=/etc/foo.conf
tags:
- configuration
If you wanted to just run the “configuration” and “packages” part of a very long playbook, you could do this:
ansible-playbook example.yml --tags "configuration,package...
Javascript Equivalent to C# LINQ Select
... return this.where(func)[0] || null;
};
Usage:
var persons = [{ name: 'foo', age: 1 }, { name: 'bar', age: 2 }];
// returns an array with one element:
var result1 = persons.where({ age: 1, name: 'foo' });
// returns the first matching item in the array, or null if no match
var result2 = person...
Can a C# class inherit attributes from its interface?
...r usage.
As an example:
using System;
using System.ComponentModel;
class Foo {
[AttributeProvider(typeof(IListSource))]
public object Bar { get; set; }
static void Main() {
var bar = TypeDescriptor.GetProperties(typeof(Foo))["Bar"];
foreach (Attribute attrib in bar.Att...
Python: print a generator expression?
...r object. Doing that will just make a list of one generator:
>>> foo = (x*x for x in range(10))
>>> [foo]
[<generator object <genexpr> at 0xb7559504>]
In that case you will need to call list():
>>> list(foo)
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
Although t...
Get property value from string using reflection
...
Add to any Class:
public class Foo
{
public object this[string propertyName]
{
get { return this.GetType().GetProperty(propertyName).GetValue(this, null); }
set { this.GetType().GetProperty(propertyName).SetValue(this, value, null);...
How to combine two jQuery results
...
You can use add();
var $foos = $('.foo');
var $foosAndBars = $foos.add('.bar');
or
var $allFoosAndBars = $allFoos.add($allBars);
share
|
impro...
What's the difference between equal?, eql?, ===, and ==?
...hen constructs. The following code snippets are logically identical:
case foo
when bar; p 'do something'
end
if bar === foo
p 'do something'
end
eql? (Hash-key comparison)
Ruby uses :eql? (in combination with the method hash) to compare Hash-keys. In most classes :eql? is identical with :==...
final keyword in method parameters [duplicate]
...uld happen when it's allowed to change extension here?
// extension = "foo";
return fileFilter;
}
Removing the final modifier would result in compile error, because it isn't guaranteed anymore that the value is a runtime constant. Changing the value from outside the anonymous class would ...
How to order by with union in SQL?
...d make sure that the alias is the same for both the selects... so
select 'foo'
union
select item as `foo`
from myTable
order by `foo`
notice that I'm using single quotes in the first select but backticks for the others.
That will get you the sorting you need.
...
How do I find an element that contains specific text in Selenium Webdriver (Python)?
...
xpath for variable Text
Incase the text is a variable you can use:
foo= "foo_bar"
my_element = driver.find_element_by_xpath("//div[.='" + foo + "']")
share
|
improve this answer
|
...