大约有 18,336 项符合查询结果（耗时：0.0319秒） [XML]
can we use xpath with BeautifulSoup?
...
As others have said, BeautifulSoup doesn't have xpath support. There are probably a number of ways to get something from an xpath, including using Selenium. However, here's a solution that works in either Python 2 or 3:
from lxml import ht...
NSUserDefaults not cleared after app uninstall on simulator
.... I have implemented the following code in my rootViewController 's viewDidLoad method:
7 Answers
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Is there a native jQuery function to switch elements?
...it will be moved before the target (not cloned)".
– Ridcully
Jan 11 '12 at 15:55
12
I like this o...
What are the main disadvantages of Java Server Faces 2.0?
...tly, apart from the relative steep learning curve when you don't have a solid background knowledge about basic Web Development (HTML/CSS/JS, server side versus client side, etc) and the basic Java Servlet API (request/response/session, forwarding/redirecting, etc), no serious disadvantages comes to ...
Create singleton using GCD's dispatch_once in Objective-C
...(instancetype)sharedInstance
{
static dispatch_once_t once;
static id sharedInstance;
dispatch_once(&once, ^
{
sharedInstance = [self new];
});
return sharedInstance;
}
+ (Class*)sharedInstance
{
static dispatch_once_t once;
static Class *sharedInst...
How to show a dialog to confirm that the user wishes to exit an Android Activity?
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In Android 2.0+ this would look like:
@Override
public void onBackPressed() {
new AlertDialog.Builder(this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setTitle("Closing Activity")
.setMessage("Are you ...
Django - limiting query results
...dler(logging.StreamHandler())
In [23]: User.objects.all().order_by('-id')[:10]
(0.000) SELECT "auth_user"."id", "auth_user"."username", "auth_user"."first_name", "auth_user"."last_name", "auth_user"."email", "auth_user"."password", "auth_user"."is_staff", "auth_user"."is_active", "au...
Navigation in django
...ad>
<body>
...
{% block nav %}
<ul id="nav">
<li>{% block nav-home %}<a href="{% url home %}">Home</a>{% endblock %}</li>
<li>{% block nav-about %}<a href="{% url about %}">About</a>{% endblo...
Recommendations of Python REST (web services) framework? [closed]
...mendations of different Python-based REST frameworks for use on the serverside to write your own RESTful APIs? Preferably with pros and cons.
...
How to sign an android apk file
...stuck with after you work through it, I'd suggest:
https://developer.android.com/studio/publish/app-signing.html
Okay, a small overview without reference or eclipse around, so leave some space for errors, but it works like this
Open your project in eclipse
Press right-mouse - > tools (android...