大约有 40,000 项符合查询结果(耗时:0.0827秒) [XML]
Static methods in Python?
Is it possible to have static methods in Python which I could call without initializing a class, like:
10 Answers
...
What is the difference between linear regression and logistic regression?
...e, and greater than 1 whereas probability can not. As regression might actually
produce probabilities that could be less than 0, or even bigger than
1, logistic regression was introduced.
Source: http://gerardnico.com/wiki/data_mining/simple_logistic_regression
Outcome
In linear regression, the...
Remove unwanted parts from strings in a column
...place a number such as the number 12? If I do x.lstrip('12') it takes out all 1 and 2s.
– Dave
Oct 26 '16 at 21:19
add a comment
|
...
Detecting when a div's height changes using jQuery
...got a div that contains some content that's being added and removed dynamically, so its height is changing often. I also have a div that is absolutely positioned directly underneath with javascript, so unless I can detect when the height of the div changes, I can't reposition the div below it.
...
Django queries - id vs pk
...ry key field i.e. you don't need to care whether the primary key field is called id or object_id or whatever.
It also provides more consistency if you have models with different primary key fields.
share
|
...
Verify version of rabbitmq
...tead on Archlinux - [{rabbit,34362},{rabbitmqctl23794,40359}] though I installed rabbitmq 3.1.3-1 :)
– Sian Lerk Lau
Dec 3 '13 at 6:18
1
...
Divide a number by 3 without using *, /, +, -, % operators
...n which performs the desired operation. But it requires the + operator, so all you have left to do is to add the values with bit-operators:
// replaces the + operator
int add(int x, int y)
{
while (x) {
int t = (x & y) << 1;
y ^= x;
x = t;
}
return y;
}...
Count how many records are in a CSV Python?
...aranteed to be a fixed size, so the only way to count them is to read them all.
– Martijn Pieters♦
Apr 19 '13 at 15:55
1
...
Block Comments in a Shell Script
...ommands and noh is for nohighlight. Search term highlighting will automatically resume the next time you search for something. Example: :10,100s/^/#/g|noh
– Matthew
Mar 13 '15 at 20:43
...
How do I “source” something in my .vimrc file?
...
Sourcing a file is 'executing' it. Essentially, each line of the file is considered a command. Sourcing it is the same as typing each command in order. You source with the command :source (usually shortened to :so).
So if you source myStuff.vim
:so myStuff.vim
an...
