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Remove rows with all or some NAs (missing values) in data.frame
...mptions --------------------
fakeData <- function(m, n, p){
set.seed(123)
m <- matrix(runif(m*n), nrow=m, ncol=n)
m[m<p] <- NA
return(m)
}
df <- cbind( data.frame(id = paste0('ID',seq(row_size)),
stringsAsFactors = FALSE),
data.frame(fak...
Websocket API to replace REST API?
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98
Not to say that the other answers here don't have merit, they make some good points. But I'm go...
django test app error - Got an error creating the test database: permission denied to create databas
...o', # Not used with sqlite3.
'PASSWORD': 'mydb123', # Not used with sqlite3.
'HOST': '127.0.0.1', # Set to empty string for localhost. Not used with sqlite3.
'PORT': '', # Set to empty string for ...
What is external linkage and internal linkage?
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298
As dudewat said external linkage means the symbol (function or global variable) is accessible t...
How do I count the number of occurrences of a char in a String?
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123
Easiest way. Clever one. And it works on Android, where there is no StringUtils class
– Jose_GD
Nov...
Ruby combining an array into one string
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what if you were joining digits? [1,2,3] => 123?
– stevenspiel
Dec 9 '13 at 19:08
3
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Why do I get “Procedure expects parameter '@statement' of type 'ntext/nchar/nvarchar'.” when I try t
...
AdaTheDevAdaTheDev
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What are some uses of template template parameters?
...hould not care what's their "types" or meaning, following works well in C++98: template<template<class, class> class C, class T, class U> void f(C<T, U> &v)
– pfalcon
Jan 14 '13 at 2:13
...
What's the best way to retry an AJAX request on failure using jQuery?
....ajax({
type : 'GET',
url : 'http://www.whatever123.gov',
timeout : 2000,
retries : 3, // <-------- Optional
retryInterval : 2000 // <-------- Optional
})
// Problem: "fail" will only be called once, and not for each retry
.f...
What is the advantage of using forwarding references in range-based for loops?
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98
The only advantage I can see is when the sequence iterator returns a proxy reference and you ne...