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class Song
def initilaize(name,artist,duration)
#name=name
#artist=artist
#duration=duration
end
end
song = Song.new("ruby","Bicylops " ,260)
puts song.artist
Very simple.
You spelled initialize as initilaize.
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How to change string a type value to complex number?
I need to perform arithmetic operations on complex numbers which are passed through command line arguments.
For example:
go run file.go 3-4i + 7+2i
Starting from Go 1.15, there is a ParseComplex function in the strconv package:
https://golang.org/pkg/strconv/#ParseComplex
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I have tried the following:
iconv('ISO-8859-1', 'UTF-8//IGNORE', 'BIG5', $input);
However, it fails and produces this error:
iconv() expects exactly 3 parameters, 4 given
Check the official documentation:
http://php.net/manual/en/function.iconv.php
You're passing an extra argument to the function.
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Closed 6 years ago.
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I have:
str = "something"
str[0, 1] #=> "s"
str[0, 2] #=> "so"
str[3, 4] #=> "ethi"
str[2, 3] #=> "meth"
I can't see logic in this. What is returned by this double indexes?
str[2,3] is "met". In this form it is str[zero_based_start_position, number_of_characters]
See ruby documentation on String class
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Closed 7 years ago.
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myhash = {answer: "yes", something: hello, another: "yes"}
myhash.delete[another]
I want to delete the another key-value pair. But, ruby gives me an error saying wrong number of arguments (0 for 1). What's going on?
the method delete is a method, not an element on the hash , and another key is a symbol, so you should call on this form
myhash.delete(:another)
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Closed 8 years ago.
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I'm trying to find the greatest prime number based on a max value...I just want this to print the largest prime number but I can't figure out how to break this loop after printing the first number.
require 'prime'
1000.downto(1) do |i|
while i.prime? do print i
end
end
i am not familiar with ruby but i guess it should work
1000.downto(1) do |i|
if i.prime? then
print i
break
end
end