大约有 40,000 项符合查询结果（耗时：0.0243秒） [XML]
`from … import` vs `import .` [duplicate]
...
I just tried import urllib.request and it doesn't work at all (python 2.6.5 Ubuntu).
– tkone
Feb 24 '12 at 23:33
6
...
Function in JavaScript that can be called only once
...
If by "won't be executed" you mean "will do nothing when called more than once", you can create a closure:
var something = (function() {
var executed = false;
return function() {
if (!executed) {
executed = true;
// do something
}
...
What is “rvalue reference for *this”?
Came across a proposal called "rvalue reference for *this" in clang's C++11 status page .
3 Answers
...
How to properly add include directories with CMake
...the headers... Do I need to list the headers of just this library, or also all the headers that it might depend on (on top of declaring the dependency on the library) ? It's a growing project and I quite dread the idea of adding a header to all the dependencies when I add one in the root library.
...
PHP convert XML to JSON
...passed, and various version fixes, but on PHP 5.6.30, this method produces ALL of the data. Attributes are stored in the array under the @attributes key, so it works absolutely flawlessly, and beautifully. 3 short lines of code solve my problem beautifully.
– AlexanderMP
...
Configuring so that pip install can work from github
...need the whole python package, with a setup.py file in it.
A package named foo would be:
foo # the installable package
├── foo
│ ├── __init__.py
│ └── bar.py
└── setup.py
And install from github like:
$ pip install git+ssh://git@github.com/myuser/foo.git
or
$ pip...
JavaScript object: access variable property by name as string [duplicate]
...enced through multiple brackets. If you have a nested object like so:
var foo = { a: 1, b: 2, c: {x: 999, y:998, z: 997}};
you can access property x of c as follows:
var cx = foo['c']['x']
If a property is undefined, an attempt to reference it will return undefined (not null or false):
foo['c...
Python Flask, how to set content type
...m flask import Response
@app.route('/ajax_ddl')
def ajax_ddl():
xml = 'foo'
return Response(xml, mimetype='text/xml')
The actual Content-Type is based on the mimetype parameter and the charset (defaults to UTF-8).
Response (and request) objects are documented here: http://werkzeug.pocoo.o...
Convert a String representation of a Dictionary to a dictionary?
...gt;>> import ast
>>> ast.literal_eval("{'muffin' : 'lolz', 'foo' : 'kitty'}")
{'muffin': 'lolz', 'foo': 'kitty'}
This is safer than using eval. As its own docs say:
>>> help(ast.literal_eval)
Help on function literal_eval in module ast:
literal_eval(node_or_string)
...
rsync error: failed to set times on “/foo/bar”: Operation not permitted
...rom rsync and the initial things I'm finding from web searches (as well as all the usual chmod'ing) are not solving it:
9 A...