大约有 40,000 项符合查询结果（耗时：0.0640秒） [XML]
Python Dictionary Comprehension
...>> print d
{0: 0, 1: 1, 2: 4, 3: 9, 4: 16}
If you want to set them all to True:
>>> d = {n: True for n in range(5)}
>>> print d
{0: True, 1: True, 2: True, 3: True, 4: True}
What you seem to be asking for is a way to set multiple keys at once on an existing dictionary. ...
How do I include a pipe | in my linux find -exec command?
...ld result in only a single agrep process being spawned which would process all the output produced by numerous invocations of zcat.
If you for some reason would like to invoke agrep multiple times, you can do:
find . -name 'file_*' -follow -type f \
-printf "zcat %p | agrep -dEOE 'grep'\n" | s...
How do I implement __getattribute__ without an infinite recursion error?
I want to override access to one variable in a class, but return all others normally. How do I accomplish this with __getattribute__ ?
...
Why would one use nested classes in C++?
... it at any time so you can not use it.
Look at std::list or std::map they all contain hidden classes (or do they?). The point is they may or may not, but because the implementation is private and hidden the builders of the STL were able to update the code without affecting how you used the code, or...
Where in a virtualenv does the custom code go?
... instance, if I were building a WSGI application and created a virtualenv called foobar I would start with a directory structure like:
...
How to set selected value of jquery select2?
...
To dynamically set the "selected" value of a Select2 component:
$('#inputID').select2('data', {id: 100, a_key: 'Lorem Ipsum'});
Where the second parameter is an object with expected values.
UPDATE:
This does work, just wanted to n...
Mongoose, Select a specific field with find
... I think .select just is a filter to choose field after you get all of that, my recommendation is to use .find({}, 'name -_id')
– hong4rc
Mar 2 '19 at 16:15
...
Filling a DataSet or DataTable from a LINQ query result set
...e? Usually, from the business tier, I can return a typed DataSet or DataTable which can be serialized for transport over ASMX.
...
Why does multiprocessing use only a single core after I import numpy?
... the answer here.
It turns out that certain Python modules (numpy, scipy, tables, pandas, skimage...) mess with core affinity on import. As far as I can tell, this problem seems to be specifically caused by them linking against multithreaded OpenBLAS libraries.
A workaround is to reset the task af...
Using AES encryption in C#
...aged.aspx
And just in case you need the sample in a hurry, here it is in all its plagiarized glory:
using System;
using System.IO;
using System.Security.Cryptography;
namespace RijndaelManaged_Example
{
class RijndaelExample
{
public static void Main()
{
try
...