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How do I split a string on a delimiter in Bash?
...with ${arrIN[1]} (starting from zeros of course)
– Oz123
Mar 21 '11 at 18:50
27
Found it: the tec...
Pass a data.frame column name to a function
...e more about tidyeval here.
library(rlang)
library(tidyverse)
set.seed(123)
df <- data.frame(B = rnorm(10), D = rnorm(10))
Use column names as strings
fun3 <- function(x, ...) {
# capture strings and create variables
dots <- ensyms(...)
# unquote to evaluate inside dplyr verbs
...
How can I get the current date and time in UTC or GMT in Java?
...
Behrang, according to stackoverflow.com/questions/4123534/…, the MySQL JDBC driver converts a given java.util.Timestamp (or java.util.Date) to the server time zone.
– Derek Mahar
Dec 7 '10 at 21:02
...
What are the differences between a pointer variable and a reference variable in C++?
...e of that object becomes the lifetime of the reference.
std::string s1 = "123";
std::string s2 = "456";
std::string s3_copy = s1 + s2;
const std::string& s3_reference = s1 + s2;
In this example s3_copy copies the temporary object that is a result of the concatenation. Whereas s3_reference in...
Understanding offsetWidth, clientWidth, scrollWidth and -Height, respectively
...nswered Jan 11 '14 at 15:26
user123444555621user123444555621
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RESTful Alternatives to DELETE Request Body
...ngs. The query string is part of the URI. Sending a DELETE request to /foo?123 means you are deleting a different resource than if you were to send DELETE to /foo?456.
– Nicholas Shanks
Jan 25 '16 at 17:38
...
What is Type-safe?
...
On the down side, with type safe languages, when you have a string like "123" and you want to operate on it like an int, you have to write more code to convert the string to an int, or when you have an
Check synchronously if file/directory exists in Node.js
...
123
Looking at the source, there's a synchronous version of path.exists - path.existsSync. Looks ...
What's the best way to get the last element of an array without deleting it?
... = $array[count($array)-1]; || 123 | 300 | 137 | 139 | 143 | 140 | 144 || 312 | 218 | 48 | 53 | 45 | 47 | 51 || ...
How to pull request a wiki page on GitHub?
...
123
GitHub doesn't support pull requests for the wiki repository, only the main repository (this i...