rows

[Solved] Multiples rows to one row in R [closed]

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We can group by ‘A’, ‘B’ and select the first non-NA element across other columns library(dplyr) df1 %>% group_by(A, B) %>% summarise(across(everything(), ~ .[order(is.na(.))][1]), .groups=”drop”) -output # A tibble: 1 x 8 # A B C D E F G H # <chr> <chr> <int> <int> <int> <int> <int> <lgl> #1 time place 1 2 … Read more

[Solved] $row[‘column’] in PHP

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That is called bracket notation. $row is an array, which has properties. In this case, it has named properties, so it is an associative array. An associate array has key/value pairs. It looks like this: $myArray = [ ‘key’ => ‘value’ ]; To echo the value of the property above, you would use echo $myArray[‘key’]; … Read more