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How do I get the number of elements in a list?
... return len(self)
You can use it like so:
>>> l = slist(range(10))
>>> l.length
10
>>> print l
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Essentially, it's exactly identical to a list object, with the added benefit of having an OOP-friendly length property.
As always, your mile...
iPhone get SSID without private library
...emy W. Sherman
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8
...
In mongoDb, how do you remove an array element by its index?
...dex. In fact, this is an open issue http://jira.mongodb.org/browse/SERVER-1014 , you may vote for it.
The workaround is using $unset and then $pull:
db.lists.update({}, {$unset : {"interests.3" : 1 }})
db.lists.update({}, {$pull : {"interests" : null}})
Update: as mentioned in some of the comm...
correct way to define class variables in Python [duplicate]
...lement.
– Clock ZHONG
Apr 27 '18 at 10:57
2
@Lobotomik: I believe it is only "shadowing" the clas...
What does = +_ mean in JavaScript
... to 0?
– colincameron
Feb 28 '13 at 10:06
3
@c.cam108 See the MDN page on the unary plus operator...
Length of generator output [duplicate]
...al iterable?
– Steve Jessop
Aug 18 '10 at 15:12
12
Regular lists consume more memory, which is so...
Calling closure assigned to object property directly
...
106
As of PHP7, you can do
$obj = new StdClass;
$obj->fn = function($arg) { return "Hello $arg...
廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ocalhost6 localhost6.localdomain6
172.16.20.45 gfs_1
172.16.20.46 gfs_2
10.10.10.45 gfs_1
10.10.10.46 gfs_2
2、配置双机互信
[root@gfs_1 ~]# ssh-keygen -t rsa -P ''
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Your identificatio...
Getting list of parameter names inside python function [duplicate]
...
answered Oct 29 '10 at 11:40
simplyharshsimplyharsh
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...
STL：accumulate与自定义数据类型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...器中C++内置数据类型，例如：
#include <numeric>
int arr[]={10,20,30,40,50};
vector<int> va(&arr[0],&arr[5]);
int sum=accumulate(va.begin(),va.end(),0); //sum = 150
但是对于自定义数据类型，我们就需要自己动手写一个类来实现自定义数据的处理，然后...