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Rails :include vs. :joins
...de functionality was changed with Rails 2.1. Rails used to do the join in all cases, but for performance reasons it was changed to use multiple queries in some circumstances. This blog post by Fabio Akita has some good information on the change (see the section entitled "Optimized Eager Loading")....
Bash Templating: How to build configuration files from templates with Bash?
...\}/defined $ENV{$1} ? $ENV{$1} : $&/eg' < template.txt
to replace all ${...} strings with corresponding enviroment variables (do not forget to export them before running this script).
For pure bash this should work (assuming that variables do not contain ${...} strings):
#!/bin/bash
while...
Where to get “UTF-8” string literal in Java?
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You don't really need to call name() at all. You can directly pass the Charset object into the InputStreamReader constructor.
– Natix
Nov 19 '14 at 10:33
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Django rest framework, use different serializers in the same ModelViewSet
... like to provide two different serializers and yet be able to benefit from all the facilities of ModelViewSet :
6 Answers
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Checking if a double (or float) is NaN in C++
...nly if f is NaN.
Note that, as some comments below have pointed out, not all compilers respect this when optimizing code.
For any compiler which claims to use IEEE floating point, this trick should work. But I can't guarantee that it will work in practice. Check with your compiler, if in doubt.
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How to Calculate Execution Time of a Code Snippet in C++
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You can use this function I wrote. You call GetTimeMs64(), and it returns the number of milliseconds elapsed since the unix epoch using the system clock - the just like time(NULL), except in milliseconds.
It works on both windows and linux; it is thread safe.
Not...
Best practices for large solutions in Visual Studio (2008) [closed]
...aller.Database
OurStuff.App.MediaPlayer
OurStuff.App.Operator
OurStuff.App.Service.Gateway
OurStuff.App.Service.CollectionStation
OurStuff.App.ServiceLocalLauncher
OurStuff.App.StackTester
OurStuff.Auditing
OurStuff.Data
OurStuff.Database
OurStuff.Database.Constants
OurStuff.Database.ObjectModel
Our...
What is the difference between Builder Design pattern and Factory Design pattern?
...POJO creation for domain objects, whereas factory is useful for creating a service objects like PdfGeneratorFactory class. The service object could be cached within factory for more than 1 time use, whereas builder always creates a new object by design.
– saurabh.in
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Accessing Google Spreadsheets with C# using Google Data API
....Extensions;
using Google.GData.Spreadsheets;
Authenticate:
SpreadsheetsService myService = new SpreadsheetsService("exampleCo-exampleApp-1");
myService.setUserCredentials("jo@gmail.com", "mypassword");
Get a list of spreadsheets:
SpreadsheetQuery query = new SpreadsheetQuery();
SpreadsheetFee...
How to create a new java.io.File in memory?
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