大约有 47,000 项符合查询结果（耗时：0.0369秒） [XML]
Generate array of all letters and digits
...
145
[*('a'..'z'), *('0'..'9')] # doesn't work in Ruby 1.8
or
('a'..'z').to_a + ('0'..'9').to_a ...
Angular.js ng-repeat across multiple tr's
...
169
Using ng-repeat on tbody appears to be valid see this post.
Also a quick test through an html...
Select the values of one property on all objects of an array in PowerShell
...
215
I think you might be able to use the ExpandProperty parameter of Select-Object.
For example, t...
App Inventor 2开发简单计算器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...乘除的简单运算，以及清除、回退、求相反数等，如图2-1所示，更为复杂的运算，如求乘方、方根及三角函数的运算，可以利用开发工具中的数学函数，从现有的功能中衍生出来。图2-1 计算器的外观第一节 功能描述一、符号及...
Assign pandas dataframe column dtypes
...
Since 0.17, you have to use the explicit conversions:
pd.to_datetime, pd.to_timedelta and pd.to_numeric
(As mentioned below, no more "magic", convert_objects has been deprecated in 0.17)
df = pd.DataFrame({'x': {0: 'a', 1: 'b'}, ...
List All Redis Databases
...atabases is fixed, and set in the configuration file. By default, you have 16 databases. Each database is identified by a number (not a name).
You can use the following command to know the number of databases:
CONFIG GET databases
1) "databases"
2) "16"
You can use the following command to list ...
Combine two columns of text in pandas dataframe
...
18 Answers
18
Active
...
How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
... = A + B log x, just fit y against (log x).
>>> x = numpy.array([1, 7, 20, 50, 79])
>>> y = numpy.array([10, 19, 30, 35, 51])
>>> numpy.polyfit(numpy.log(x), y, 1)
array([ 8.46295607, 6.61867463])
# y ≈ 8.46 log(x) + 6.62
For fitting y = AeBx, take the logarithm of...
Change Active Menu Item on Page Scroll?
...rs
var topMenu = $("#top-menu"),
topMenuHeight = topMenu.outerHeight()+15,
// All list items
menuItems = topMenu.find("a"),
// Anchors corresponding to menu items
scrollItems = menuItems.map(function(){
var item = $($(this).attr("href"));
if (item.length) { return ite...
How can I get a list of locally installed Python modules?
...
+100
Solution
Do not use with pip > 10.0!
My 50 cents for getting a pip freeze-like list from a Python script:
import pip
installed...