大约有 8,000 项符合查询结果（耗时：0.0306秒） [XML]
How to deal with SettingWithCopyWarning in Pandas?
... the warning, but the operation will work.
df2 = df[['A']]
df2['A'] /= 2
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/__main__.py:1: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_indexer,col_in...
How to prevent a dialog from closing when a button is clicked
...ll.
If you find some problems please comment here.
package com.droidahead.lib.utils;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.View;
import android.view.View.OnClickListener;
public class CustomAlertDialogBuilder ex...
How do I integrate Ajax with Django applications?
...g with csrf_token and submit button. Note that we have included the jquery library.
<form id = "contactForm" method= "POST">{% csrf_token %}
{{ contactForm.as_p }}
<input type="submit" name="contact-submit" class="btn btn-primary" />
</form>
<script src="https://cdnjs.clo...
Git for beginners: The definitive practical guide
...ation/foo.html
# Documentation/gitignore.html
# file.o
# lib.a
# src/internal.o
[...]
$ cat .git/info/exclude
# ignore objects and archives, anywhere in the tree.
*.[oa]
$ cat Documentation/.gitignore
# ignore generated html files,
*.html
# except foo.html which is mainta...
Setting up a common nuget packages folder for all solutions when some projects are included in multi
... as follow:
<HintPath>$(SolutionDir)\packages\EntityFramework.6.1.0\lib\net40\EntityFramework.dll</HintPath>
In most cases there in shared project will be only few packages, so you can easily change it.
I think it is better solution, when you branching code, when setting common repo,...
Why is the gets function so dangerous that it should not be used?
...
It's actually not gcc which warns, it's the glibc which contains a pragma or attribute on gets() that causes the compiler to emit a warning when used.
– fuz
Jan 5 '15 at 11:47
...
Why would one use nested classes in C++?
...the full class definition needs the definition of types from some external library which has a heavy or just ugly header file (take WinAPI). If you use PIMPL, then you can enclose any WinAPI-specific functionality only in .cpp and never include it in .h.
...
A gentle tutorial to Emacs/Swank/Paredit for Clojure
...
(setq clojure-project-jar-classpaths
'(
; "deps/"
"lib/"
))
(defun find-clojure-project-jars (path)
(apply #'append
(mapcar (lambda (d)
(loop for jar in (remove-if (lambda (f) (member f '("." "..")))
...
Django dynamic model fields
... adaptations -- with them you can have fully dynamic models.
NoSQL Django libraries are great, but keep in mind that they are not 100% the Django-compatible, for example, to migrate to Django-nonrel from standard Django you will need to replace ManyToMany with ListField among other things.
Ch...
What's the best way of scraping data from a website? [closed]
...cide that they are too limiting and you can put together your own stack of libraries but without a lot of scraping experience your design will be much worse than pjscrape or scrapy.
Note: I use the terms crawling and scraping basically interchangeable here. This is a copy of my answer to your Quora...