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How to correctly use the extern keyword in C
...s have a separate copy of errno, it's that they are both exposing a symbol called "errno". When the linker sees this, it doesn't know which "errno" to pick, so it will bail out with an error message.
– cwick
Feb 2 '09 at 16:52
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How to hide action bar before activity is created, and then show it again?
...etActionBar().hide();
setContentView(R.layout.splash); // be sure you call this AFTER requestFeature
This creates the ActionBar and immediately hides it before it had the chance to be displayed.
But now there is another problem. After putting windowActionBar="false" in the theme, the Activit...
Is there a function that returns the current class/method name? [duplicate]
...ng reflection is expensive and is sometimes unnecessary. The question typically stems from an aversion to hard-coding the name - despite actually knowing it. But you can let the compiler handle it by using nameof(<MethodNameHere>) in place of the string. True, it doesn't save you from copy/...
How to check if a model has a certain column/attribute?
...cking my models for ones that had a user, but had to instead look for user_id since some models delegated user.
– MattyB
Jul 22 '15 at 16:16
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How do I put all required JAR files in a library folder inside the final JAR file with Maven?
... application, and I want to package all the dependencies in my JAR file inside a library folder, as mentioned in one of the answers here:
...
^M at the end of every line in vim
...a file in windows and then in linux. How can I remove all of these automatically?
9 Answers
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Multiple Models in a single django ModelForm?
...lse
# is_valid will trigger clean method
# so it should be called after all other forms is_valid are called
# otherwise clean_data will be empty
if not super(CombinedFormBase, self).is_valid() :
isValid = False
for f in self.form_classes:
...
In Python, what happens when you import inside of a function? [duplicate]
...g time by put slow module ` import plotly` inside the function where it is called.
– laviex
Feb 4 '19 at 5:49
I find t...
Getting the filenames of all files in a folder [duplicate]
...retrieve an array of File objects for each file in the directory, and then call the getName() method to get the filename.
List<String> results = new ArrayList<String>();
File[] files = new File("/path/to/the/directory").listFiles();
//If this pathname does not denote a directory, then...
Method has the same erasure as another method in type
...
@Stilgar what's to stop the method being called or inspected via reflection? The list of methods returned by Class.getMethods() would have two identical methods, which wouldn't make sense.
– Adrian Mouat
Mar 4 '11 at 10:42
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