how to convert hashtag in swift? - swift

Question

I want to extract the hashtag.
func getHashtags() -> [String] {
let words = components(separatedBy: " ")
var hashTags = [String]()
for word in words{
if word.hasPrefix("#"){
let hashtag = word.dropFirst()
hashTags.append(String(hashtag))
}
}
return hashTags
}
This method was not a good solution. "I want to eat #rice #eat." Hashtags are extracted well from sentences like
But if the sentence is like this,
Hashtags do not recognize line breaks, so the entire hashtag is not extracted. How can you solve this error? Tell me about the function that extracts the hashtag.

Answer 1

You can reformat your code for something like this. string here is your original text
func getHashtags() -> [String] {
var words = string.components(separatedBy: "#") // Separate words by #
var hashTags = [String]()
// Check if the first word of sentence is a hashtag. If it is not then remove the first word
// ex "firstWord #firstHashtag". Here "firstWord " should be removed
var shouldRemoveFirstWord = !string.hasPrefix("#")
if shouldRemoveFirstWord {
words.removeFirst()
}
for word in words{
let trimmedWord = word.trim()
// If the word has space then get only the first word
let firstWord = word.components(separatedBy: " ")
let hashtag = firstWord[0]
hashTags.append(String(hashtag))
}
return hashTags
}
And for the trim function, you can add it like this
extension String {
func trim() -> String {
return self.trimmingCharacters(in: .whitespacesAndNewlines)
}
}