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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...undSync] replSet not trying to sync from 192.168.1.138:27017, it is vetoed for 10 more seconds
Sun Dec 29 22:03:05.499 [rsHealthPoll] DBClientCursor::init call() failed
Sun Dec 29 22:03:05.499 [rsHealthPoll] replset info 192.168.1.138:27017 heartbeat failed, retrying
Sun Dec 29 22:03:05.501 [rsHe...
__proto__ VS. prototype in JavaScript
...d used as the prototype while Myconstructure.prototype is just a blueprint for __proto__ which, is infact the actual object saved and used as the protoype. Hence myobject.prototype wouldnt be a property of the actual object because its just a temporary thing used by the constructor function to out...
Detect iPad users using jQuery?
...rAgent.match(/iPad/i) != null;
iPhone/iPod Detection
Similarly, the platform property to check for devices like iPhones or iPods:
function is_iPhone_or_iPod(){
return navigator.platform.match(/i(Phone|Pod))/i)
}
Notes
While it works, you should generally avoid performing browser-specific...
How to make a PHP SOAP call using the SoapClient class
...
This is what you need to do.
I tried to recreate the situation...
For this example, I created a .NET sample WebService (WS) with a WebMethod called Function1 expecting the following params:
Function1(Contact Contact, string description, int amount)
Where Contact is just a model tha...
Getting SyntaxError for print with keyword argument end=' '
...tion, so it takes keyword arguments, too.
The correct idiom in Python 2.x for end=" " is:
print "foo" % bar,
(note the final comma, this makes it end the line with a space rather than a linebreak)
If you want more control over the output, consider using sys.stdout directly. This won't do any sp...
How to print an exception in Python?
...
For Python 2.6 and later and Python 3.x:
except Exception as e: print(e)
For Python 2.5 and earlier, use:
except Exception,e: print str(e)
share...
Use of *args and **kwargs [duplicate]
....e. it allows you pass an arbitrary number of arguments to your function. For example:
>>> def print_everything(*args):
for count, thing in enumerate(args):
... print( '{0}. {1}'.format(count, thing))
...
>>> print_everything('apple', 'banana', 'cabbage')
0. apple...
How to overload __init__ method based on argument type?
...
A much neater way to get 'alternate constructors' is to use classmethods. For instance:
>>> class MyData:
... def __init__(self, data):
... "Initialize MyData from a sequence"
... self.data = data
...
... @classmethod
... def fromfilename(cls, filename):
....
multi-step registration process issues in asp.net mvc (split viewmodels, single model)
...f you have 3 steps wizard this means that you will have 3 view models, one for each step:
public class Step1ViewModel
{
[Required]
public string SomeProperty { get; set; }
...
}
public class Step2ViewModel
{
[Required]
public string SomeOtherProperty { get; set; }
...
}
...
Installing older version of R package
...am trying to use Rpy2 and ggplot2 but I get an error. After some searching for the error online, I found that the error occurs because there are changes in the ggplot2 package that are not yet reflected in Rpy2 (for example, see this post (Edit: Link is now dead)).
...