大约有 40,000 项符合查询结果（耗时：0.0646秒） [XML]
How to run code when a class is subclassed? [duplicate]
...- Watcher subclasses type, not object. 2 - SuperClass has no superclass at all, not object. I'm just so used to writing down object as a superclass for every class I defined that I somehow missed it that this code was using something else. Although there doesn't seem to be any harm in making SuperCl...
Facebook Callback appends '#_=_' to Return URL
Facebook callback has started appending #_=_ hash underscore to the Return URL
23 Answers
...
How to execute a raw update sql with dynamic binding in rails
...
It doesn't look like the Rails API exposes methods to do this generically. You could try accessing the underlying connection and using it's methods, e.g. for MySQL:
st = ActiveRecord::Base.connection.raw_connection.prepare("update table set f1=? where f2=? and f3=?")
st.execute(f1, f2, f3)
st...
jQuery selector regular expressions
...
James Padolsey created a wonderful filter that allows regex to be used for selection.
Say you have the following div:
<div class="asdf">
Padolsey's :regex filter can select it like so:
$("div:regex(class, .*sd.*)")
Also, check the official documentation on se...
Can Selenium Webdriver open browser windows silently in background?
...um RC?
You can 'supposedly', pass in some parameters into Chrome, specifically: --no-startup-window
Note that for some browsers, especially IE, it will hurt your tests to not have it run in focus.
You can also hack about a bit with AutoIT, to hide the window once it's opened.
...
ObjectiveC Parse Integer from String
...
NSArray *_returnedArguments = [serverOutput componentsSeparatedByString:@":"];
_returnedArguments is an array of NSStrings which the UITextField text property is expecting. No need to convert.
Syntax error:
[_appDelegate loggedIn...
Python: changing value in a tuple
...'m new to python so this question might be a little basic. I have a tuple called values which contains the following:
17 ...
Code for Greatest Common Divisor in Python [closed]
... the result will have the same sign as b", hence gcd(1, -1) == -1 seems totally legit to me.
– Marco Bonelli
Jan 11 '15 at 2:30
...
How to 'bulk update' with Django?
...ings like incrementing rows:
from django.db.models import F
Entry.objects.all().update(n_pingbacks=F('n_pingbacks') + 1)
See the documentation.
However, note that:
This won't use ModelClass.save method (so if you have some logic inside it won't be triggered).
No django signals will be emitte...
Creating Threads in python
...see how:
from threading import Thread
from time import sleep
def threaded_function(arg):
for i in range(arg):
print("running")
sleep(1)
if __name__ == "__main__":
thread = Thread(target = threaded_function, args = (10, ))
thread.start()
thread.join()
print("th...