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How to extract year and month from date in PostgreSQL without using to_char() function?
... want to select sql:
SELECT "year-month" from table group by "year-month" AND order by date , where
year-month - format for date "1978-01","1923-12".
select to_char of couse work , but not "right" order:
...
mysqldump - Export structure only without autoincrement
I have a MySQL database and I am trying to find a way to export its structure only, without the auto increment values. mysqldump --no-data would almost do the job, but it keeps the auto_increment values. Is there any way to do it without using PHPMyAdmin (that I know it can do it)?
...
json_encode() escaping forward slashes
...json_encode($str, JSON_UNESCAPED_SLASHES);
If you don't have PHP 5.4 at hand, pick one of the many existing functions and modify them to your needs, e.g. http://snippets.dzone.com/posts/show/7487 (archived copy).
Example Demo
<?php
/*
* Escaping the reverse-solidus character ("/", slash) is ...
How to find the size of an array in postgresql
...e trick. Or if you know that the array is 1-dimensional (which is likely) and are running PostgreSQL 9.4 or higher, you can use cardinality:
SELECT cardinality(id) FROM example;
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improve t...
Avoid modal dismiss on enter keypress
...t field caused this button to be fired. I changed it to an anchor instead and it works as expected now (enter submits the form and does not close the modal).
<a class="close" data-dismiss="modal">&times;</a>
Without seeing your source, I can't confirm that your cause is the same ...
ASP.NET MVC: Custom Validation by DataAnnotation
...(validationContext.DisplayName));
}
return null;
}
}
and then you might have a view model and decorate one of its properties with it:
public class MyViewModel
{
[CombinedMinLength(20, "Bar", "Baz", ErrorMessage = "The combined minimum length of the Foo, Bar and Baz propert...
Removing viewcontrollers from navigation stack
...a navigation stack, with say 5 UIViewControllers. I want to remove the 3rd and 4th viewcontrollers in the stack on the click of a button in the 5th viewcontroller. Is it possible to do this? If so how?
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Adjust UILabel height to text
...
I've just put this in a playground and it works for me.
Updated for Swift 4.0
import UIKit
func heightForView(text:String, font:UIFont, width:CGFloat) -> CGFloat{
let label:UILabel = UILabel(frame: CGRectMake(0, 0, width, CGFloat.greatestFiniteMagn...
How can I rollback a github repository to a specific commit?
...0 commits in it right now. I need to rollback the repository to commit 80, and remove all the subsequent ones.
6 Answers
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Object of custom type as dictionary key
...
You need to add 2 methods, note __hash__ and __eq__:
class MyThing:
def __init__(self,name,location,length):
self.name = name
self.location = location
self.length = length
def __hash__(self):
return hash((self.name, self.lo...