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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
...using the column name, but instead you would have to find the name used to index it. To find that, issue the following select:
SHOW CREATE TABLE region;
This should show you the name of the index, something like this:
CONSTRAINT region_ibfk_1 FOREIGN
KEY (country_id) REFERENCES
country...
Cross-Domain Cookies
...erver side you need to have the following headers:
header("Access-Control-Allow-Origin: http://origin.domain:port");
header("Access-Control-Allow-Credentials: true");
header("Access-Control-Allow-Methods: GET, POST");
header("Access-Control-Allow-Headers: Content-Type, *");
Within the PHP-file yo...
C++ SFINAE examples?
...
The link changed to blog.olivierlanglois.net/index.php/2007/09/01/…
– tstenner
Aug 25 '09 at 17:32
21
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Get keys from HashMap in Java
...
This is doable, at least in theory, if you know the index:
System.out.println(team1.keySet().toArray()[0]);
keySet() returns a set, so you convert the set to an array.
The problem, of course, is that a set doesn't promise to keep your order. If you only have one item in...
How can I match a string with a regex in Bash?
...
Note that index 0 contains the full match and index 1 and 2 contain the group matches.
– Rainer Schwarze
Jan 20 '19 at 15:19
...
How would I skip optional arguments in a function call?
OK I totally forgot how to skip arguments in PHP.
19 Answers
19
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AngularJS Multiple ng-app within a page
...ame: "Product 3",
price: 180
}];
$scope.remove = function(index) {
$scope.items.splice(index, 1);
}
}
);
var namesModule = angular.module("namesList", [])
namesModule.controller("NamesController",
function($scope) {
$scope.names = [{
username: "Nitin...
What is unit testing and how do you do it? [duplicate]
... site is a good introduction to the what and the how
http://www.nunit.org/index.php?p=quickStart&r=2.5
Is everything testable? Generally if it calculates something then yes. UI code is a whole other problem to deal with though, as simulating users clicking on buttons is tricky.
What should yo...
How would you implement an LRU cache in Java?
... * 2;
cacheRegions = new CacheMap[ stripeSize ];
for ( int index = 0; index < cacheRegions.length; index++ ) {
cacheRegions[ index ] = new CacheMap<> ( limit / cacheRegions.length, fair );
}
}
public LruSimpleConcurrentCache ( final int concurren...
How do I migrate a model out of one django app and into a new one?
...t of 0003_create_cat as well? Also I want to share a tip. If you have indexes, they will need to be modified as well. In my case they were unique indexes, so my forward looks like thiS: db.delete_unique('common_cat', ['col1']) db.rename_table('common_cat', 'specific_cat') db...