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In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
...atabase you're using.
Using MySQL as an example (if for no other reason because it's most popular), you have DATE, DATETIME, TIME and TIMESTAMP column data types; just as you have CHAR, VARCHAR, FLOAT and INTEGER.
So, you ask, what's the difference? Well, some of them are self-explanatory. DATE on...
Update multiple rows in same query using PostgreSQL
...
You can also use update ... from syntax and use a mapping table. If you want to update more than one column, it's much more generalizable:
update test as t set
column_a = c.column_a
from (values
('123', 1),
('345', 2...
Passing an Array as Arguments, not an Array, in PHP
...ndard func($arg1, $arg2) manner. But now I'm lost on how to do it. I recall the manner of passing by reference, how to "glob" incoming parameters ... but not how to de-list the array into a list of arguments.
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Trigger change() event when setting 's value with val() function
...is is exactly what I needed. What is the best way to discover how to dynamically trigger DOM event handlers? Does jQuery document this well? Thank you!
– Con Antonakos
Oct 1 '14 at 17:38
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Is it safe to shallow clone with --depth 1, create commits, and pull updates again?
...
--depth <depth>::
Create a 'shallow' clone with a history truncated to the specified number of revisions.
That stems from commits like 0d7d285, f2c681c, and c29a7b8 which support clone, send-pack /receive-pack with/from shallow clones.
smart-http now supports shallow fetch/clone too.
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Concatenating two one-dimensional NumPy arrays
... have two simple one-dimensional arrays in NumPy . I should be able to concatenate them using numpy.concatenate . But I get this error for the code below:
...
EF LINQ include multiple and nested entities
....Lab)
.Single(x => x.Id == id);
Your solution fails because Include doesn't take a boolean operator
Include(i => i.Modules.Select(s => s.Chapters) && i.Lab)
^^^ ^ ^
list ...
Is Enabling Double Escaping Dangerous?
I have an ASP.NET MVC application with a route that allows searching for stuff via /search/.
4 Answers
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Differences between Microsoft .NET 4.0 full Framework and Client Profile
...file:
Always target NET4 Client Profile for all your client desktop applications (including Windows Forms and WPF apps).
NET4 Full framework:
Target NET4 Full only if the features or assemblies that your app need are not included in the Client Profile. This includes:
If you are buil...
CSS Properties: Display vs. Visibility
...wser whether to show an element or not. It's either visible (visible - you can see it), or invisible (hidden - you can't see it).
The display property tells the browser how to draw and show an element, if at all - whether it should be displayed as an inline element (i.e. it flows with text and othe...