Find the first element that occurs only once
100635
Find the first un-repeated character in a string
20864
Want to substitute only first occurence with sed
83536
Get first non-null value per row
93393
How do I show only the first letters of a string?
79380
How to find the order of a group generated by two elements?
45087
Python idiom to return first item or None
28187
How to replace the first occurence in an expression instead of replacing all?
5653
Fastest way to count occurrences of each unique element
83282
Find the position of a string element, knowing only part of the string
42691
CSS selector for first element with class
137135
Providing an iterator for the first element of a container of pairs
82332
How to access the previous/next element in a for loop?
3394
Get first element from a dictionary
55758
Select first occurring element after another element
81018
Iterator has .next() - is there a way to get the previous element instead of the next one?
32511
How do I evaluate only one step of an expression?
60419
Randomly selecting elements without repetition