大约有 23,000 项符合查询结果（耗时：0.0293秒） [XML]
Python append() vs. + operator on lists, why do these give different results?
...
if an element is single string, e.g. s = 'word', l = ['this', 'is']. Then l.append(s) and l+s should be the same. Am I correct?
– user3512680
Feb 2 at 22:13
...
SQL Call Stored Procedure for each Row without using a cursor
...
@WeihuiGuo because Code built dynamically using strings is HORRIBLY prone to failure and a total pain in the butt to debug. You should absolutely never do anything like this outside of a one off that has no chance of becoming a routine part of a production environment
...
How to have Android Service communicate with Activity
...FRESH_DATA_INTENT));
(RefreshTask.REFRESH_DATA_INTENT is just a constant string.)
In my listening activity, I define my BroadcastReceiver:
private class DataUpdateReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.g...
Search and replace in bash using regular expressions
...is available, with the same precedence as == and !=. When it is used, the string to the right of the operator is considered an extended regular expression and matched accordingly (as in regex(3)).
– nickl-
Mar 10 '14 at 4:22
...
Check play state of AVPlayer
...lock:^{
// Passing NULL for the queue specifies the main queue.
NSString *timeDescription = (NSString *)CMTimeCopyDescription(NULL, [self.player currentTime]);
NSLog(@"Passed a boundary at %@", timeDescription);
[timeDescription release];
}];
...
ASP.NET: Session.SessionID changes between requests
...text.Current.Response.Cookies.Count > 0)
{
foreach (string s in HttpContext.Current.Response.Cookies.AllKeys)
{
if (s == FormsAuthentication.FormsCookieName || s.ToLower() == "asp.net_sessionid")
{
HttpContext.Cur...
How do I pick randomly from an array?
...
class String
def black
return "\e[30m#{self}\e[0m"
end
def red
return "\e[31m#{self}\e[0m"
end
def light_green
return "\e[32m#{self}\e[0m"
end
def purple
return "\e[35m#{self}\e[0m"
end
def bl...
How do you test that a Python function throws an exception?
... out = a*a
except TypeError:
raise TypeError("Input should be a string:")
return out
Here is the test to be performed (only this test is inserted):
import dum_function as df # import function module
import unittest
class Test(unittest.TestCase):
"""
The class inherits from...
Backbone.js get and set nested object attribute
... Remember that objects are passed by reference and are mutable, unlike string and number primitives. Backbone's set and constructor methods attempt a shallow clone of any object reference passed as an argument. Any references to other objects in properties of that object aren't cloned. When you ...
How to find the php.ini file used by the command line?
...ork on Windows. Definitely not as powerful as grep, but find will do basic string searching for you. Of course, if php -i dumps its output to stderr, you're probably SOL.
– Marc B
May 2 '10 at 22:43
...