From For statements with range clause: A “for” statement with a “range” clause iterates through all entries of an array, slice, string or map, or values received on a channel. For each entry it assigns iteration values to corresponding iteration variables and then executes the block. As an example: for index, element := range someSlice … Read more
There are at least 6 (!) ways to clone an array: loop slice Array.from() concat spread operator (FASTEST) map A.map(function(e){return e;}); There has been a huuuge BENCHMARKS thread, providing following information: for blink browsers slice() is the fastest method, concat() is a bit slower, and while loop is 2.4x slower. for other browsers while loop … Read more
Add dots after the second slice: //—————————vvv append([]int{1,2}, []int{3,4}…) This is just like any other variadic function. func foo(is …int) { for i := 0; i < len(is); i++ { fmt.Println(is[i]) } } func main() { foo([]int{9,8,7,6,5}…) }
To get the first n elements of an array, use const slicedArray = array.slice(0, n);
slice() works like substring() with a few different behaviors. Syntax: string.slice(start, stop); Syntax: string.substring(start, stop); What they have in common: If start equals stop: returns an empty string If stop is omitted: extracts characters to the end of the string If either argument is greater than the string’s length, the string’s length will be used … Read more
You can use the substring function: let str = “12345.00”; str = str.substring(0, str.length – 1); console.log(str); This is the accepted answer, but as per the conversations below, the slice syntax is much clearer: let str = “12345.00”; str = str.slice(0, -1); console.log(str);