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Rails: How can I set default values in ActiveRecord?
...e model. If you just want to initialize some numbers to 0 then this is not what you want.
Defining defaults in your migration also works part of the time... As has already been mentioned this will not work when you just call Model.new.
Overriding initialize can work, but don't forget to call super!
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Multi-statement Table Valued Function vs Inline Table Valued Function
... both simply execute a SELECT statement. SQL Server will treat an ITVF somewhat like a VIEW in that it will calculate an execution plan using the latest statistics on the tables in question. A MSTVF is equivalent to stuffing the entire contents of your SELECT statement into a table variable and then...
push_back vs emplace_back
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In addition to what visitor said :
The function void emplace_back(Type&& _Val) provided by MSCV10 is non conforming and redundant, because as you noted it is strictly equivalent to push_back(Type&& _Val).
But the real C++0...
Socket.IO Authentication
...n sent, so I'm assuming it will need to be sent up during the connection. What is the best way to
7 Answers
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How do you use colspan and rowspan in HTML tables?
...;/tr>
</table>
The next row is all 1x1 cells. But, for example, what if you added an extra cell? Well, it would just pop off the edge to the right.
<table>
<tr>
<td rowspan="2"></td>
<td colspan="4"></td>
</tr>
<t...
How to combine two or more querysets in a Django view?
...owed on the resulting QuerySet. Further, databases
place restrictions on what operations are allowed in the combined
queries. For example, most databases don’t allow LIMIT or OFFSET in
the combined queries.
share
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How to calculate age (in years) based on Date of Birth and getDate()
...ge by 1. This means the following is the most accurate because it mirrors what humans mean when they say "age": DATEDIFF(yy, @BirthDate, GETDATE()) - CASE WHEN (MONTH(@BirthDate) >= MONTH(GETDATE())) AND DAY(@BirthDate) > DAY(GETDATE()) THEN 1 ELSE 0 END
– Bacon Bits
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Java Pass Method as Parameter
...n "visiting" all the leaves of a container, as OP does, Visitor pattern is what comes to mind - that's the traditional use of Visitor pattern. Anyway, you have a good implementation, and it could be considered either Strategy or Visitor.
– ToolmakerSteve
Sep 5 ...
How to add spacing between UITableViewCell
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Swift Version
Updated for Swift 3
This answer is somewhat more general than the original question for the sake of future viewers. It is a supplemental example to the basic UITableView example for Swift.
Overview
The basic idea is to create a new section (rather than a new row)...
.NET console application as Windows service
...bit like installutil.exe or sc.exe utilities). You could use it to install whatever you want as a service, the OS doesn't care about the project type you use.
– VladV
Jun 22 '16 at 14:13
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