Corianas/

MicroTask-mini-guanaco_200k

def add_caseifer(text):
    # Using list comprehension for more efficient concatenation
    return ''.join(['↨' + char.lower() if char.isupper() else char for char in text
    
def remove_caseifer(text):
    new_text = ""
    i = 0
    while i < len(text):
        if text[i] == "↨":
            if i+1 < len(text):
                new_text += text[i+1].upper()
                i += 1
            else:
                pass  # skip this index
        else:
            new_text += text[i]
        i += 1
    return new_text