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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...
JavaScript - Get Portion of URL Path
...e: http://jessepollak.me/chrome-was-wrong-ie-was-right
This works in the latest versions of Chrome and Firefox. I do not have versions of Internet Explorer to test, so please test yourself with the JSFiddle example.
JSFiddle example
There's also a coming URL object that will offer this support for U...
#pragma pack effect
...rly. For example, given 4-byte integers and the following struct:
struct Test
{
char AA;
int BB;
char CC;
};
The compiler could choose to lay the struct out in memory like this:
| 1 | 2 | 3 | 4 |
| AA(1) | pad.................. |
| BB(1) | BB(2) | BB(3) | BB(4) |
| ...
How do I associate a Vagrant project directory with an existing VirtualBox VM?
...
# test1 and test2 boxes... for box in test1 test2; do virtualboxid=$(VBoxManage list vms | grep $box | cut -d' ' -f2); echo -n $virtualboxid > .vagrant/machines/$box/virtualbox/id; done
– luismartingil
...
jQuery first child of “this”
...
I've added jsperf test to see the speed difference for different approaches to get the first child (total 1000+ children)
given, notif = $('#foo')
jQuery ways:
$(":first-child", notif) - 4,304 ops/sec - fastest
notif.children(":first") - 653 ...
Rename a file using Java
Can we rename a file say test.txt to test1.txt ?
14 Answers
14
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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 do I test an AngularJS service with Jasmine?
(There is a related question here: Jasmine test does not see AngularJS module )
4 Answers
...
Can you have multiline HTML5 placeholder text in a ?
...ms some browser accepts this hack and others don't.
This is the results of tests I ran (with browsertshots and browserstack)
Chrome: >= 35.0.1916.69
Firefox: >= 35.0 (results varies on platform)
IE: >= 10
KHTML based browsers: 4.8
Safari: No (tested = Safari 8.0.6 Mac OS X 10.8)
Opera: No ...
jQuery AJAX cross domain
Here are two pages, test.php and testserver.php.
14 Answers
14
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