大约有 7,000 项符合查询结果（耗时：0.0296秒） [XML]
Why was the arguments.callee.caller property deprecated in JavaScript?
...
It is better to use named functions than arguments.callee:
function foo () {
... foo() ...
}
is better than
function () {
... arguments.callee() ...
}
The named function will have access to its caller through the caller property:
function foo () {
alert(foo.caller);
...
What is the shortest function for reading a cookie by name in JavaScript?
...ow cookie names or values are encoded. Calling the function with a string "foo:bar[0]" should return a cookie (literally) named "foo:bar[0]";
New cookies may be written and/or existing cookies modified at any point during lifetime of the page.
Under these assumptions, it's clear that encodeURIComp...
Difference between __str__ and __repr__?
......:
>>> class Sic(object):
... def __repr__(object): return 'foo'
...
>>> print str(Sic())
foo
>>> print repr(Sic())
foo
>>> class Sic(object):
... def __str__(object): return 'foo'
...
>>> print str(Sic())
foo
>>> print repr(Sic())
<...
Can “this” ever be null in Java?
...
the null pointer exception in something like foo.bar() would be thrown when foo is discovered to be null. it does happen before entering the method, but the real story is that there is no method to attempt to call.
– Claudiu
Sep 24...
How to make good reproducible pandas examples
...,3,4,2,1,3,1]})
assert df.equals(eval(dput(df)))
du = pd.get_dummies(df.a,"foo")
assert du.equals(eval(dput(du)))
di = df
di.index = list('abcdefgh')
assert di.equals(eval(dput(di)))
Note that this produces a much more verbose output than DataFrame.to_dict, e.g.,
pd.DataFrame({
'foo_1':pd.Seri...
List all sequences in a Postgres db 8.1 with SQL
... OWNED BY clause of the ALTER SEQUENCE commmand
e.g.
ALTER SEQUENCE foo_id OWNED by foo_schema.foo_table
to set it to be linked to the table foo_table
or
ALTER SEQUENCE foo_id OWNED by NONE
to break the connection between the sequence and any table
The information about this relatio...
Query for array elements inside JSON type
... for its elements:
WITH reports(data) AS (
VALUES ('{"objects":[{"src":"foo.png"}, {"src":"bar.png"}]
, "background":"background.png"}'::json)
)
SELECT *
FROM reports r, json_array_elements(r.data#>'{objects}') obj
WHERE obj->>'src' = 'foo.png';
The CTE (WITH query) jus...
How to pass an object into a state using UI-router?
...hristopherthielen: Yes, this should be working now in 0.2.13.
.state('foo', { url: '/foo/:param1?param2', params: { param3:
null } // null is the default value });
$state.go('foo', { param1: 'bar', param2: 'baz', param3: { id: 35,
name: 'what' } });
$stateParams in 'foo' is n...
In C, do braces act as a stack frame?
...ct outside the inner scope (but within the containing function), ie:
void foo() {
int c[100];
int *p;
{
int d[200];
p = d;
}
/* Can I access p[0] here? */
return;
}
(In other words: is the compiler allowed to deallocate d, even if in practice most don't?).
The ...
Do regular expressions from the re module support word boundaries (\b)?
...use \b in a Python string is shorthand for a backspace character.
print("foo\bbar")
fobar
So the pattern "\btwo\b" is looking for a backspace, followed by two, followed by another backspace, which the string you're searching in (x = 'one two three') doesn't have.
To allow re.search (or compile)...