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Unique BooleanField value in Django?
... save method of the model and if you've set the boolean to True, make sure all others are set to False.
from django.db import transaction
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one = models.BooleanField()
def save(self, *args, **kwargs):
...
What is the difference between C++ and Visual C++? [duplicate]
...979 at Bell Labs as an enhancement to the C programming language and originally named "C with Classes". It was renamed to C++ in 1983.
C++ is widely used in the software industry. Some of its application domains include systems software, application software, device drivers, embedded software, high...
Creating temporary files in Android
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This is what I typically do:
File outputDir = context.getCacheDir(); // context being the Activity pointer
File outputFile = File.createTempFile("prefix", "extension", outputDir);
As for their deletion, I am not complete sure either. Since I ...
How to get the full path of running process?
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According to my measurements, calling process.Modules[0] is 50 times slower than calling process.MainModule.
– Luca Cremonesi
Oct 23 '14 at 16:14
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How to open standard Google Map application from my application?
Once user presses button in my application, I would like to open standard Google Map application and to show particular location. How can I do it? (without using com.google.android.maps.MapView )
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C#对象序列化与反序列化 - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
...于System.Xml.Serialization命名空间下。XML序列化不能序列化私有数据。
(2)几种序列化的区别
二进制格式和SOAP格式可序列化一个类型的所有可序列化字段，不管它是公共字段还是私有字段。XML格式仅能序列化公共字段或拥有公共属...
How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,
...ecked, and put the following as the text to find:
_platformActions.InstallApp\((.+)\)
And the following as the text to replace it with:
this.Platform().App($1).Install()
Note: As SLaks points out in a comment below, the change in regex syntax is due to VS2012 switching to the standard .Net regex...
android get real path by Uri.getPath()
I'm trying to get image from gallery.
7 Answers
7
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How to log something in Rails in an independent log file?
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If you want to change all the default logging for that specific model, you can simply use User.logger = Logger.new(STDOUT) or wherever you want to log to. In the same way, ActiveRecord::Base.logger = Logger.new(STDOUT) will change all the logging ...
Turn off autosuggest for EditText?
Is there a way to programmatically turn off that autosuggest list which pops up as you type in EditText?
14 Answers
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