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Django migration strategy for renaming a model and relationship fields
...go 2.0 if you change your model name, the ./manage.py makemigrations myapp command will ask you if you renamed your model. E.g.: Did you rename the myapp.Foo model to Bar? [y/N] If you answer 'y' your migration will contain the migration.RenameModel('Foo', 'Bar') Same counts for the renamed fields ...
Should a “static final Logger” be declared in UPPER-CASE?
... However, I have seen that most people declare loggers in lower-case which comes up as a violation in PMD .
11 Answers
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Java LinkedHashMap get first or last entry
...() }
edit: However, if you're willing to go beyond the JavaSE API, Apache Commons Collections has its own LinkedMap implementation, which has methods like firstKey and lastKey, which do what you're looking for. The interface is considerably richer.
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Blank space at top of UITextView in iOS 10
...l still work on lower iOS versions - setting the property means you need a compatibility check first.
– jrturton
Oct 22 '13 at 6:25
1
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Static way to get 'Context' in Android?
...droid Manifest file, declare the following.
<application android:name="com.xyz.MyApplication">
</application>
Then write the class:
public class MyApplication extends Application {
private static Context context;
public void onCreate() {
super.onCreate();
M...
Screenshot Apps for iPhone simulator [closed]
I was wondering if there are any good recommendations on apps that takes screenshots of the iPhone simulator. I've tried apps like iPhone screenshot cropper but I'm looking for something that will allow me to make larger images. For example large enough to put on a poster. Any suggestions?
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How can I check for “undefined” in JavaScript? [duplicate]
...guaranteed to return a string:
if (typeof myVar !== 'undefined')
Direct comparisons against undefined are troublesome as undefined can be overwritten.
window.undefined = "foo";
"foo" == undefined // true
As @CMS pointed out, this has been patched in ECMAScript 5th ed., and undefined is non-wr...
What is HEAD in Git?
... @Meng This one helped me, hope it helps: marklodato.github.com/visual-git-guide/index-en.html
– raphael
Jan 4 '12 at 18:49
57
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What is the correct SQL type to store a .Net Timespan with values > 24:00:00?
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What exactly do “u” and “r” string flags do, and what are raw string literals?
...ich a backslash, \, is taken as meaning "just a backslash" (except when it comes right before a quote that would otherwise terminate the literal) -- no "escape sequences" to represent newlines, tabs, backspaces, form-feeds, and so on. In normal string literals, each backslash must be doubled up to ...