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Remove rows with all or some NAs (missing values) in data.frame

...w many NAs are valid for each row, try this function. For many survey data sets, too many blank question responses can ruin the results. So they are deleted after a certain threshold. This function will allow you to choose how many NAs the row can have before it's deleted: delete.na <- function(...
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Custom UITableViewCell from nib in Swift

...s[indexPath.row] return cell } } The image below shows a set of constraints that work with the provided code without any constraints ambiguity message from Xcode: share | improve...
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How to enable mod_rewrite for Apache 2.2

... THIS is the way to go... I had everything else set except for this. – arrayown Mar 16 '13 at 17:59 2 ...
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How does Hadoop process records split across block boundaries?

...ch FileSplit is initialized with a start parameter corresponding to the offset in the input file. There is still no handling of the lines at that point. The relevant part of the code looks like this: while (((double) bytesRemaining)/splitSize > SPLIT_SLOP) { int blkIndex = getBlockIndex(blkLoc...
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Git Push error: refusing to update checked out branch

... will you git config core.bare false and git reset --hard ? – aircraft Nov 15 '19 at 14:53 1 ...
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setup.py examples?

... Complete walkthrough of writing setup.py scripts here. (with some examples) If you'd like a real-world example, I could point you towards the setup.py scripts of a couple major projects. Django's is here, pyglet's is here. You can just browse the source of...
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Optional Parameters with C++ Macros

...y, burdening the API developer, there comes a solution for overloading and setting optional parameters of C/C++ functions to us crazy people. The usage of the out-coming overloaded APIs become very enjoyable and pleasant. =) If there is any further possible simplification of this approach, please d...
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How to find a text inside SQL Server procedures / triggers?

...rocedure I use on my system to find text.... DECLARE @Search varchar(255) SET @Search='[10.10.100.50]' SELECT DISTINCT o.name AS Object_Name,o.type_desc FROM sys.sql_modules m INNER JOIN sys.objects o ON m.object_id=o.object_id WHERE m.definition Like '%'+@Search+'%' ...
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Auto-fit TextView for Android

...l Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final ViewGroup container = (ViewGroup) findViewById(R.id.container); findViewById(R.id.button1).setOnClickListener(new OnClickListener() { @Override public void...
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What is a NullPointerException, and how do I fix it?

...h is a reference type). Since you have not yet said what to point to, Java sets it to null, which means "I am pointing to nothing". In the second line, the new keyword is used to instantiate (or create) an object of type Integer, and the pointer variable num is assigned to that Integer object. The N...