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django test app error - Got an error creating the test database: permission denied to create databas
...@localhost; I originally tried to only GRANT CREATE... but then could not SELECT or DROP the created database. This essentially makes your user a superuser, so be careful.
– mightypile
Dec 31 '15 at 16:28
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ASP.NET MVC: Custom Validation by DataAnnotation
...ntext validationContext)
{
var properties = this.PropertyNames.Select(validationContext.ObjectType.GetProperty);
var values = properties.Select(p => p.GetValue(validationContext.ObjectInstance, null)).OfType<string>();
var totalLength = values.Sum(x => x.Lengt...
Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
...that was True False and vice-versa. In this case, that means that we will select out the ones that are not duplicated according to the method.
– n8yoder
Feb 27 at 2:35
1
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JavaScript open in a new window, not tab
I have a select box that calls window.open(url) when an item is selected. Firefox will open the page in a new tab by default. However, I would like the page to open in a new window, not a new tab.
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Twig ternary operator, Shorthand if-then-else
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{{ (ability.id in company_abilities) ? 'selected' : '' }}
The ternary operator is documented under 'other operators'
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Replace input type=file by an image
... be updated with the filename or at least a message that the file has been selected successfully. The user has no visual input on what happened after he selected the file. Could this be done please? Perhaps change to a different image, when a file is chosen?
– JoaMika
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How to Correctly Use Lists in R?
...dresses the question of the difference between [] and [[]].
In short [[]] selects a single item from a list and [] returns a list of the selected items. In your example, x = list(1, 2, 3, 4)' item 1 is a single integer but x[[1]] returns a single 1 and x[1] returns a list with only one value.
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MySQL - length() vs char_length()
... in two bytes. Or UTF-8, where the number of bytes varies. For example:
select length(_utf8 '€'), char_length(_utf8 '€')
--> 3, 1
As you can see the Euro sign occupies 3 bytes (it's encoded as 0xE282AC in UTF-8) even though it's only one character.
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Entity Framework. Delete all rows in table
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var all = from c in dataDb.Table select c;
dataDb.Table.RemoveRange(all);
dataDb.SaveChanges();
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Lock Escalation - What's happening here?
...mparing this value before and after running the main part of your script:
SELECT lock_escalation_desc FROM sys.tables WHERE name='yourtablename'
In my case, altering table to drop or add a constraint doesn't seem to modify this value.
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