大约有 25,300 项符合查询结果（耗时：0.0604秒） [XML]
How to pass a user defined argument in scrapy spider
I am trying to pass a user defined argument to a scrapy's spider. Can anyone suggest on how to do that?
5 Answers
...
What is the “Execute Around” idiom?
...
Basically it's the pattern where you write a method to do things which are always required, e.g. resource allocation and clean-up, and make the caller pass in "what we want to do with the resource". For example:
public interface InputStreamAction
{
void useStream(I...
What is the difference between MacVim and regular Vim?
...with Vim from using it in various *nix systems. I've seen many people recommend running MacVim over Vim in the terminal. Can anyone tell me what differences there are between MacVim and regular Vim?
...
Importing from a relative path in Python
...per relative imports, where you can avoid doing anything hacky. With this method, you know you are getting a relative import rather than an absolute import. The '..' means, go to the directory above me:
from ..Common import Common
As a caveat, this will only work if you run your python as a mod...
Service vs IntentService in the Android platform
I am seeking an example of something that can be done with an IntentService that cannot be done with a Service (and vice-versa)?
...
Best way to allow plugins for a PHP application
I am starting a new web application in PHP and this time around I want to create something that people can extend by using a plugin interface.
...
What is the best way to compare floats for almost-equality in Python?
... an earlier version of Python, the equivalent function is given in the documentation.
def isclose(a, b, rel_tol=1e-09, abs_tol=0.0):
return abs(a-b) <= max(rel_tol * max(abs(a), abs(b)), abs_tol)
rel_tol is a relative tolerance, it is multiplied by the greater of the magnitudes of the two ...
What exactly is Heroku?
...
Heroku is a cloud platform as a service. That means you do not have to worry about infrastructure; you just focus on your application.
In addition to what Jonny said, there are a few features of Heroku:
Instant Deployment with Git push - build of your application is p...
Is it possible to declare git repository as dependency in android gradle?
...
For me the best way is:
https://jitpack.io
Step 1. Add the JitPack repository to build.gradle at the end of repositories:
repositories {
// ...
maven { url "https://jitpack.io" }
}
Step 2. Add the dependency in the f...
Attach IntelliJ IDEA debugger to a running Java process
...he upper left
Select the "Remote" option in the left-most pane
Choose a name (I named mine "remote-debugging")
Click "OK" to save:
JVM Options
The configuration above provides three read-only fields. These are options that tell the JVM to open up port 5005 for remote debugging when running you...