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schema builder laravel migrations unique on two columns
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The second param is to manually set the name of the unique index. Use an array as the first param to create a unique key across multiple columns.
$table->unique(array('mytext', 'user_id'));
or (a little neater)
$table->unique(['mytext', 'user_id']);
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Label encoding across multiple columns in scikit-learn
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As mentioned by larsmans, LabelEncoder() only takes a 1-d array as an argument. That said, it is quite easy to roll your own label encoder that operates on multiple columns of your choosing, and returns a transformed dataframe. My code here is based in part on Zac Stewart's excellen...
Can PHP cURL retrieve response headers AND body in a single request?
...th correctly defining request option: curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:')); , disabling sending this header response. As for 302, this should not be happened, because 302 header is redirect, it not expecting body, however i know, sometimes servers send some body with 302 response, ...
How to extract one column of a csv file
... csv_line; - this is saying read in each line, one at a time and create an array where each element is called "csv_line" and send that to the "do" section of our while loop
do echo "${csv_line[0]}";done < file - now we're in the "do" phase, and we're saying echo the 0th element of the array "csv_...
How can you integrate a custom file browser/uploader with CKEditor?
... the ending slash when appropriate
$files = scandir($dir);
$images = array();
foreach($files as $file){
// filter for thumbNail image files (use an empty string for $thumIndicator if not using thumbnails )
if( !preg_match('/'. $thumIndicator .'\.(jpg|jpeg|png|gif)$/i', $file) )
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Difference between viewDidLoad and viewDidAppear
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Simply put, you would want to create any controls or arrays in viewDidLoad, where as in viewDidAppear is where you would want to refresh those controls or arrays.
viewDidLoad is called once when the controller is created and viewDidAppear is called each time the view, well, D...
Ignore invalid self-signed ssl certificate in node.js with https.request?
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Lelo: brackets turn it into an array. ca: expects an array of certs. This file should be a comma separated list of certs, often people use an inner function to turn a PEM file into an array. For a self signed cet a single cert "should" work.
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How to split a string at the first `/` (slash) and surround part of it in a ``?
...ar myString = "23/05/2013";
var arr = myString.split('/');
you'll get an array of size 3
arr[0] --> 23
arr[1] --> 05
arr[2] --> 2013
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How to clear APC cache entries?
...cript copies to the web directory, accesses, and deletes.
<?php
if (in_array(@$_SERVER['REMOTE_ADDR'], array('127.0.0.1', '::1')))
{
apc_clear_cache();
apc_clear_cache('user');
apc_clear_cache('opcode');
echo json_encode(array('success' => true));
}
else
{
die('SUPER TOP SECRET');
}...
Uses of Action delegate in C# [closed]
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MSDN says:
This delegate is used by the
Array.ForEach method and the
List.ForEach method to perform an
action on each element of the array or
list.
Except that, you can use it as a generic delegate that takes 1-3 parameters without returning any value.
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