大约有 46,000 项符合查询结果（耗时：0.0582秒） [XML]
Pandas count(distinct) equivalent
I am using pandas as a db substitute as I have multiple databases (oracle, mssql, etc) and I am unable to make a sequence of commands to a SQL equivalent.
...
Remove empty strings from a list of strings
... question that was asked). List Comprehensions are the pythonic solution, and filter should only be used if profiling has proven that the listcomp is a bottleneck.
– Tritium21
Feb 21 '15 at 18:18
...
Can you use Microsoft Entity Framework with Oracle? [closed]
...erly OraDirect .NET) now provides support for Entity Framework v4 Release Candidate devart.com/blogs/dotconnect/?p=2062
– Devart
Apr 2 '10 at 11:16
...
How do I delete multiple rows in Entity Framework (without foreach)
...ng Entity Framework. There isn't a foreign key / parent object so I can't handle this with OnDeleteCascade.
22 Answers
...
What predefined macro can I use to detect clang?
... postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
How to check an Android device is HDPI screen or MDPI screen?
...
Density values described at: developer.android.com/guide/practices/screens_support.html
– esilver
Jan 21 '14 at 21:52
1
...
Rails - Could not find a JavaScript runtime?
...js solves this
To install nodejs on ubuntu, you can type the following command in the terminal:
sudo apt-get install nodejs
To install nodejs on systems using yum, type the following in the terminal:
yum -y install nodejs
...
Remove multiple whitespaces
I'm getting $row['message'] from a MySQL database and I need to remove all whitespace like \n \t and so on.
15 Answer...
Why are Python's 'private' methods not actually private?
Python gives us the ability to create 'private' methods and variables within a class by prepending double underscores to the name, like this: __myPrivateMethod() . How, then, can one explain this
...
Python convert tuple to string
... postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....