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How do I use InputFilter to limit characters in an EditText in Android?
....isSpaceChar(currentChar)) {
filteredStringBuilder.append(currentChar);
}
}
return filteredStringBuilder.toString();
}
}
}
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Run R script from command line
...ou really want to use the ./a.R way of calling the script you could add an appropriate #! to the top of the script
#!/usr/bin/env Rscript
sayHello <- function(){
print('hello')
}
sayHello()
I will also note that if you're running on a *unix system there is the useful littler package which ...
How to check iOS version?
...e presence of a constant. This came up in iOS 8 with the introduction of UIApplicationOpenSettingsURLString, used to load Settings app via -openURL:. The value didn't exist prior to iOS 8. Passing nil to this API will crash, so you must take care to verify the existence of the constant first:
if (&...
What is the right way to check for a null string in Objective-C?
I was using this in my iPhone app
20 Answers
20
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django urls without a trailing slash do not redirect
I've got two applications located on two separate computers. On computer A, in the urls.py file I have a line like the following:
...
Could not insert new outlet connection [duplicate]
...
Removing(removing reference, not deleting) and then adding the appropriate file(the file of class you want to add the outlet to) is actually enough.
Edit 1 I found that after unchecking (in XCode 6.3.1) I had to wait a few seconds for the Indexing to appear and complete in the project n...
How to load an ImageView by URL in Android? [closed]
...
1. Picasso allows for hassle-free image loading in your application—often in one line of code!
Use Gradle:
implementation 'com.squareup.picasso:picasso:(insert latest version)'
Just one line of code!
Picasso.get().load("http://i.imgur.com/DvpvklR.png").into(imageView);
2. Glid...
Maintain/Save/Restore scroll position when returning to a ListView
...rks for me. I have also seen in the Android source code for the "Contacts" app, that they use a similar technique. I would like to add some more details:
On top on my ListActivity-derived class:
private static final String LIST_STATE = "listState";
private Parcelable mListState = null;
Then, some...
How do I create a file and write to it in Java?
..._8);
//Files.write(file, lines, StandardCharsets.UTF_8, StandardOpenOption.APPEND);
Creating a binary file:
byte data[] = ...
Path file = Paths.get("the-file-name");
Files.write(file, data);
//Files.write(file, data, StandardOpenOption.APPEND);
...
Check for changes to an SQL Server table?
...kes a sense, it's not your database), have you considered working with the application vendor that does make the database?
They could implement an API that provides a mechanism for notifying accessory apps that data has changed. It could be as simple as writing to a notification table that lists...