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In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
...ave 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 only stores a date, TIME only stores a time of day, while DATETIME stores both.
The difference between DATE...
Return empty cell from formula in Excel
...a by changing SomeRange to Range("MyRange"). To set a name for your cells, select the cells, click Define Name on the Formulas tab of the ribbon, and enter "MyRange" in the Name field. (And of course you could replace MyRange with anything you want.)
– devuxer
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Map and Reduce in .NET
...ons. C# 3.5 and Linq already has it albeit under different names.
Map is Select:
Enumerable.Range(1, 10).Select(x => x + 2);
Reduce is Aggregate:
Enumerable.Range(1, 10).Aggregate(0, (acc, x) => acc + x);
Filter is Where:
Enumerable.Range(1, 10).Where(x => x % 2 == 0);
https://www...
adding and removing classes in angularJs using ng-click
...s code actuali change class for all div, how I can apply class only to the selected clicked item
– xzegga
Apr 24 '14 at 4:44
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Embedding SVG into ReactJS
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@AndrewPatton Multiple Css Class names with the tick char does not work: '.class1, .class2{fill: #005baa;}' How can I fix that?
– HelloWorld
Jun 7 '18 at 15:07
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How can foreign key constraints be temporarily disabled using T-SQL?
...use this script to list the constraint status. Will be very helpfull:
SELECT (CASE
WHEN OBJECTPROPERTY(CONSTID, 'CNSTISDISABLED') = 0 THEN 'ENABLED'
ELSE 'DISABLED'
END) AS STATUS,
OBJECT_NAME(CONSTID) AS CONSTRAINT_NAME,
OBJECT_NAME(FKEYID) AS TABLE_NAM...
Webrick as production server vs. Thin or Unicorn?
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WEBrick also can't handle longer URI's, if they exceed 2083 chars you'll see a crash. Thin does not have these problems, which made it superior - already in development.
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impro...
SQL how to make null values come last when sorting ascending
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select MyDate
from MyTable
order by case when MyDate is null then 1 else 0 end, MyDate
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Can we write our own iterator in Java?
If I have a list containing [alice, bob, abigail, charlie] and I want to write an iterator such that it iterates over elements that begin with 'a', can I write my own ? How can I do that ?
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iphone: Where the .dSYM file is located in crash report
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You can locate .dSYM and application binary file in archive.
Select Window -> Organizer
This will open up Organizer window containing last created Archive of project
Right click on Archive and select 'Show in Finder'
Select 'Show Package Content' for archive
Project.xcarchive...