What is the begins() method in Euphoria?
Overview
There are a good number of functions in the search.e library that use different types of algorithms to carry out some form of a search operation. Such search operations are usually geared toward locating some values in another. In this shot, we will learn about the begins method.
The begins() method
The begins method checks if a value can be found at the start of another value. It is a boolean operation. Therefore, it returns either true or false. A return value of true means that the value being checked for was found at the beginning of another value, and a return value of false means that the value being checked for was not found at the start of another value.
Syntax
begins(substring, fullstring)
Parameter values
The presence of the substring will be checked for at the head of the fullstring.
-
substring: This is a set of characters (sequence) that will be searched for at the start of thefullstring. -
fullstring: This is a sequence which may or may not contain thesubstringbeing searched for.
Return value
The begins method will return 1 if the substring is found at the head/start of the fullstring. Otherwise, it will return 0.
Example
The code given below shows us the begins() method in action.
include std/search.eatom result1, result2, result3result1 = begins("ply", "plying that route")result2 = begins("sm", "plasticism")result3 = begins("e", "edpresso")printf(1,"\n %d", result1)printf(1,"\n %d", result2)printf(1,"\n %d", result3 )
Explanation
-
Line 1: We add the search library in a file to allow us to use the
begins()method. -
Line 3: We declare the variables
result1,result2, andresult3. -
Lines 5–7: We use the
begins()method and store the output in the variables we declared earlier. -
Lines 9–11: We display the output using the
begins()method.
