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What is the findSplitBefore() method in D language?

NDUKWE CHIDERA K.

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

Overview

findSplitBefore() is part of the inbuilt standard library of the D language. It’s used to carry out search operations based on a certain algorithm. This function will accept two variables. The first will be the variable that will be searched for a match. The second will be the value that will be searched for.

When the value being searched for is found in the variable being searched, the array is split at that point.

This function will return a range of tuple values, including the set of elements before the split point and the value after the split point.

Syntax

findSplitBefore(haystack_value,needle_value)

Parameters

  • haystack_value: This is the string, array, or tuple which will be searched for to find a match for the needle_value.
  • needle_value: This is a substring or character whose match is being checked for in the haystack_value.

Return value

It will return a tuple with a range of values, which contains the value before the split and the value from the split point.

For example, findSplitBefore() in the string "ghostland", at the point `“stl”, will return [“gho”,“stand”].

Code

We’ll carry out a findSplitBefore operation in the code below on some variables.

import std.stdio;
import std.algorithm.searching;
void main(){
writeln(findSplitBefore("ghostland","stl"));
writeln(findSplitBefore("We are trying the split-before-method","split"));
writeln(findSplitBefore([2,4,5,6,7],[5]));
}

Explanation

  • Lines 1 and 2: We make the necessary imports.
  • Line 4: We start the main function block.
  • Lines 5, 6 and 7: We display the result of the findSplitBefore() method using the writeln() method.

To summarize, in the findSplitBefore() method, we split the value from the split point. Finally, the value will be returned before the split point and after the split point, and this will include the split point value.

RELATED TAGS

d programming
arrays
tuples
communitycreator

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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