大约有 12,000 项符合查询结果（耗时：0.0343秒） [XML]
Manually raising (throwing) an exception in Python
... the constructor:
raise ValueError('A very specific bad thing happened', 'foo', 'bar', 'baz')
These arguments are accessed by the args attribute on the Exception object. For example:
try:
some_code_that_may_raise_our_value_error()
except ValueError as err:
print(err.args)
prints
('m...
Get all unique values in a JavaScript array (remove duplicates)
...ain unique references to the objects. Thus the set s in let s = new Set([{Foo:"Bar"}, {Foo:"Bar"}]); will return this: Set { { Foo: 'Bar' }, { Foo: 'Bar' } } which is a Set with unique object references to objects that contain the same values. If you write let o = {Foo:"Bar"}; and then create a set...
When to use single quotes, double quotes, and backticks in MySQL
...esults (or errors) depending on SQL mode:
SELECT "column" FROM table WHERE foo = "bar"
ANSI_QUOTES disabled
The query will select the string literal "column" where column foo is equal to string "bar"
ANSI_QUOTES enabled
The query will select the column column where column foo is equal to column bar...
Why does the C# compiler not fault code where a static method calls an instance method?
The following code has a static method, Foo() , calling an instance method, Bar() :
3 Answers
...
How to check if a function exists on a SQL database
... FROM sys.objects
WHERE object_id = OBJECT_ID(N'[dbo].[foo]')
AND type IN ( N'FN', N'IF', N'TF', N'FS', N'FT' ))
DROP FUNCTION [dbo].[foo]
GO
This approach to deploying changes means that you need to recreate all permissions on the object so you might cons...
What's the difference between a Python “property” and “attribute”?
...other data).
class MyObject(object):
# This is a normal attribute
foo = 1
@property
def bar(self):
return self.foo
@bar.setter
def bar(self, value):
self.foo = value
obj = MyObject()
assert obj.foo == 1
assert obj.bar == obj.foo
obj.bar = 2
assert obj.foo...
Where to place and how to read configuration resource files in servlet based application?
...ContextClassLoader();
InputStream input = classLoader.getResourceAsStream("foo.properties");
// ...
Properties properties = new Properties();
properties.load(input);
Here foo.properties is supposed to be placed in one of the roots which are covered by the default classpath of a webapp, e.g. webapp'...
Find an element in DOM based on an attribute value
... native querySelectorAll so you can do:
document.querySelectorAll('[data-foo="value"]');
https://developer.mozilla.org/en-US/docs/Web/API/Document.querySelectorAll
Details about browser compatibility:
http://quirksmode.org/dom/core/#t14
http://caniuse.com/queryselector
You can use jQuery to...
Selecting and manipulating CSS pseudo-elements such as ::before and ::after using jQuery
...a attribute and then use jQuery to manipulate that:
In HTML:
<span>foo</span>
In jQuery:
$('span').hover(function(){
$(this).attr('data-content','bar');
});
In CSS:
span:after {
content: attr(data-content) ' any other text you may want';
}
If you want to prevent the 'o...
Using .text() to retrieve only text not nested in child tags
...e text inside the parent element.
Code provided for easy reference:
$("#foo")
.clone() //clone the element
.children() //select all the children
.remove() //remove all the children
.end() //again go back to selected element
.text();
...