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How to declare variable and use it in the same Oracle SQL script?
...r assigning values to a VAR is with an EXEC call:
SQL> var name varchar2(20)
SQL> exec :name := 'SALES'
PL/SQL procedure successfully completed.
SQL> select * from dept
2 where dname = :name
3 /
DEPTNO DNAME LOC
---------- -------------- -------------
30 SALES...
Distinct by property of class with LINQ [duplicate]
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292
You can use grouping, and get the first car from each group:
List<Car> distinct =
car...
How should I read a file line-by-line in Python?
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229
There is exactly one reason why the following is preferred:
with open('filename.txt') as fp:
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Convert NaN to 0 in javascript
...er. This has the added benefit of converting things like numeric strings '123' to a number.
The only unexpected thing may be if someone passes an Array that can successfully be converted to a number:
+['123'] // 123
Here we have an Array that has a single member that is a numeric string. It wil...
How can you display the Maven dependency tree for the *plugins* in your project?
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Is there a conditional ternary operator in VB.NET?
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Depends upon the version. The If operator in VB.NET 2008 is a ternary operator (as well as a null coalescence operator). This was just introduced, prior to 2008 this was not available. Here's some more info: Visual Basic If announcement
Example:
Dim foo as String = If(bar...
MVC 4 @Scripts “does not exist”
I have just created an ASP.NET MVC 4 project and used Visual Studio 2012 RC to create a Controller and Razor Views for Index and Create Actions.
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Likelihood of collision using most significant bits of a UUID in Java
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213
According to the documentation, the static method UUID.randomUUID() generates a type 4 UUID.
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How do I serialize an object and save it to a file in Android?
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251
Saving (w/o exception handling code):
FileOutputStream fos = context.openFileOutput(fileName,...