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differentiate null=True, blank=True in django
...values for Django field types such as DateTimeField or ForeignKey will be stored as NULL in the DB.
blank determines whether the field will be required in forms. This includes the admin and your custom forms. If blank=True then the field will not be required, whereas if it's False the field cannot ...
How to convert JSON to CSV format and store in a variable
...at opens up JSON data in the browser, but unfortunately I have no clue how to read it. Is there a way to convert this data using JavaScript in CSV format and save it in JavaScript file?
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How to remove all debug logging calls before building the release version of an Android app?
According to Google, I must " deactivate any calls to Log methods in the source code " before publishing my Android app to Google Play. Extract from section 3 of the publication checklist :
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Copy constructor versus Clone()
In C#, what is the preferred way to add (deep) copy functionality to a class? Should one implement the copy constructor, or rather derive from ICloneable and implement the Clone() method?
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Does “git fetch --tags” include “git fetch”?
...ting with git 1.9/2.0 (Q1 2014), git fetch --tags fetches tags in addition to what are fetched by the same command line without the option.
See commit c5a84e9 by Michael Haggerty (mhagger):
Previously, fetch's "--tags" option was considered equivalent to specifying the refspec
refs/tags/*:r...
Has anyone ever got a remote JMX JConsole to work?
It seems that I've never got this to work in the past. Currently, I KNOW it doesn't work.
20 Answers
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Why do we need entity objects? [closed]
I really need to see some honest, thoughtful debate on the merits of the currently accepted enterprise application design paradigm.
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Passing Parameters JavaFX FXML
How can I pass parameters to a secondary window in javafx? Is there a way to communicate with the corresponding controller?
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Jenkins on OS X: xcodebuild gives Code Sign error
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Keychains need to be unlocked before they can be used. You can use security unlock-keychain to unlock. You can do that interactively (safer) or by specifying the password on the command line (unsafe), e.g.:
security unlock-keychain -p mySe...
How does libuv compare to Boost/ASIO?
...us on networking, but its asynchronous I/O capabilities have been extended to other resources. Additionally, with Boost.Asio being part of the Boost libraries, its scope is slightly narrowed to prevent duplication with other Boost libraries. For example, Boost.Asio will not provide a thread abstra...