大约有 15,475 项符合查询结果（耗时：0.0207秒） [XML]
how to permit an array with strong parameters
...me, DateTime, StringIO, IO,
ActionDispatch::Http::UploadedFile and Rack::Test::UploadedFile.
To declare that the value in params must be an array of permitted scalar values map the key to an empty array:
params.permit(:id => [])
In my app, the category_ids are passed to the create acti...
How to “inverse match” with regex?
...e it is written in, but worked like a charm in Sublime text to clean up my test data. Thanks!
– Matthias dirickx
May 4 '17 at 11:21
1
...
Progress indicator during pandas operations
... internally..
here's the code from my gist (I'll add more pandas function tests there):
import pandas as pd
import numpy as np
import multiprocessing
from functools import partial
def _df_split(tup_arg, **kwargs):
split_ind, df_split, df_f_name = tup_arg
return (split_ind, getattr(df_spli...
How to inspect Javascript Objects
... This gives me 'undefined' as output. I am trying to debug karma tests.
– Alex C
Mar 27 '15 at 19:41
1
...
Why are my PowerShell scripts not running?
...unning the command Set-ExecutionPolicy bypass -File C:\Users\david\Desktop\test.ps1 and got an error message. There is no -File option for this command.
– David Spector
Jul 9 '19 at 11:37
...
Pycharm does not show plot
...
I test in my version of Pycharm (Community Edition 2017.2.2), you may need to announce both plt.interactive(False) and plt.show(block=True) as following:
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 6...
Maximum concurrent Socket.IO connections
...enchmarking/
I wondered the same question, so I ended up writing a small test (using XHR-polling) to see when the connections started to fail (or fall behind). I found (in my case) that the sockets started acting up at around 1400-1800 concurrent connections.
This is a short gist I made, similar ...
How do you know a variable type in java?
...s very bad , So code...)
How to get variable's type?
Up's :
String str = "test";
String type = str.getClass().getName();
value: type = java.lang.String
this method :
str.getClass().getSimpleName();
value:String
now example:
Object o = 1;
o.getClass().getSimpleName();
value:Integer
...
What's Alternative to Singleton
...the singleton. We did see some benefits of not using singleton in the unit testing because we can test different configurations all at once.
...
How to [recursively] Zip a directory in PHP?
... to be created..
* You can specify the path too */
$obj = new Archive_Zip('test.zip');
/**
* create a file array of Files to be Added in Zip
*/
$files = array('black.gif',
'blue.gif',
);
/**
* creating zip file..if success do something else do something...
* if Error in file creation ..it is either...