Question whether a string starts with a substring

string:starts_with?(STRING $string, STRING $substring) : BOOL

string:starts_with?('hi friend','hi')
#=> TRUE

string:starts_with?('hello world!','h')
#=> TRUE

string:starts_with?('hello world!','hh')
#=> FALSE

# it is case sensitive
string:starts_with?('hello world!','Hello')
#=> FALSE

# empty substring will return 0   
string:starts_with?('hello world!','')
#=> FALSE

# you can check for spaces too  
string:starts_with?('  hello world! ',' ')
#=> TRUE

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