大约有 48,000 项符合查询结果（耗时：0.0527秒） [XML]
How to convert an array of strings to an array of floats in numpy?
...list on the map return value if you use map, since map returns an iterator now.)
However, if it's already a numpy array of strings, there's a better way. Use astype().
import numpy as np
x = np.array(['1.1', '2.2', '3.3'])
y = x.astype(np.float)
...
What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
...
At least you have to know where env is :).
– ᐅdevrimbaris
Mar 22 '16 at 8:50
1
...
Exposing a port on a live Docker container
... to create a Docker container that acts like a full-on virtual machine. I know I can use the EXPOSE instruction inside a Dockerfile to expose a port, and I can use the -p flag with docker run to assign ports, but once a container is actually running, is there a command to open/map additional por...
What does `someObject.new` do in Java?
...
@emory I'm not saying that, I know there can be perfectly valid reasons to want to make an inner class public, and return instances of the inner class from methods of the outer, but I would tend to design my code such that "outsiders" don't need to constru...
how do I work around log4net keeping changing publickeytoken
...
Don't know is it suitable for your particular case or not, but you can recompile one of the frameworks, so they will use log4net with the same public key. In my case it was FluentNHibernate which uses log4net 1.2.10 and Combres with...
Why does the C# compiler not fault code where a static method calls an instance method?
...w answer (and this entire question) has mostly only historical interest by now!
(Pre C# 7.3:)
For some reason, overload resolution always finds the best match before checking for static versus non-static. Please try this code with all static types:
class SillyStuff
{
static void SameName(obje...
Structs versus classes
... a meaningful, user-focused, relevant performance metric, and then you'll know whether the change has a meaningful effect on real users in relevant scenarios.
Structs consume less heap memory (because they are smaller and more easily compacted, not because they are "on the stack"). But they take lo...
Why always ./configure; make; make install; as 3 separate steps?
...o make install because only root can copy files to /usr and /usr/local.
Now you see that each step is a pre-requirement for next step. Each step is a preparation to make things work in a problemless flow. Distros use this metaphor to build packages (like RPM, deb, etc.).
Here you'll see that ea...
How do I use reflection to call a generic method?
...hat's the best way to call a generic method when the type parameter isn't known at compile time, but instead is obtained dynamically at runtime?
...
What is the behavior difference between return-path, reply-to and from?
...olstuff-threadId=123@mymailinglist.com>
This is a very simple body.
Now, let's say you are going to send it from a mailing list, that implements VERP (or some other bounce tracking mechanism that uses a different return-path). Lets say it will have a return-path of coolstuff-you=yourcompany....