大约有 48,000 项符合查询结果（耗时：0.0637秒） [XML]
Find the max of two or more columns with pandas
....max(axis=1)
>>> df
A B C
0 1 -2 1
1 2 8 8
2 3 1 3
If you know that "A" and "B" are the only columns, you could even get away with
>>> df["C"] = df.max(axis=1)
And you could use .apply(max, axis=1) too, I guess.
...
Different dependencies for different build profiles
Is it possible to have a different set of dependencies in a maven pom.xml file for different profiles?
2 Answers
...
Environment variable to control java.io.tmpdir?
...t_temp_directory() functions return a static value of /tmp/.
I don't know if the actual JDK6 follows these exact conventions, but by the behavior on each of the listed platforms, it seems like they do.
share
|
...
Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
...t;/span>
</body>
<script>
var objectContainer = {};
if(typeof message == 'undefined'){
var asyncScript = document.createElement('script');
asyncScript.onload = function(){
objectContainer.messageClass = new message(document.getElementById('message')...
About catching ANY exception
...with exceptions and tracking them all down can be a very painful task, and if you miss just one, you have a very very huge painful bug in your system. That being said, it's good to track down as many as you can and handle them appropriately and then have a backup catch all for the ones you miss.
...
How do I redirect in expressjs while passing some context?
I am using express to make a web app in node.js. This is a simplification of what I have:
8 Answers
...
How can I delete multiple lines in vi?
...
I find this easier
Go VISUAL mode Shift+v
Select lines
d to delete
https://superuser.com/questions/170795/how-can-i-select-and-delete-lines-of-text-in-vi
share
|
...
Converting from longitude\latitude to Cartesian coordinates
...a few feet and even then there is theoretically curvature of the Earth... If you require more rigidly WGS-84 compatible approach checkout the "Vincenty Formula."
I understand where starblue is coming from, but good software engineering is often about trade offs, so it all depends on the accuracy y...
Passing an array by reference
...
It's a syntax for array references - you need to use (&array) to clarify to the compiler that you want a reference to an array, rather than the (invalid) array of references int & array[100];.
EDIT: Some clarification.
void foo(int * x);
void foo(int x[100]);
void foo(int x[]);
These ...
Where are iOS simulator screenshots stored?
...
If you create screenshots from within the simulator using File -> Save Screen Shot (Command-S), those files end up on the Desktop as something like: iOS Simulator Screen shot Apr 22, 2012.png.
Under Xcode 6 & newer, de...