Rob
October 2, 2018, 1:20pm
#1
OK I’m at the start of my Ruby journey, and I have been going through the exercises as the book suggests. But I have finally become undone. I really don’t understand the method %{} , what does it do??? in comparison to #{} ?? and how is it formatting the order in this exercise??
I tried going on but it seems that the %{} is very important.
Any help on this would be really helpful.
Rob
io_io
October 2, 2018, 2:19pm
#2
You can quote strings and interpolate code within. You can also use modifiers right after the % .
Take a look here:
https://en.wikibooks.org/wiki/Ruby_Programming/Syntax/Literals#The_.25_Notation
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Rob
October 2, 2018, 10:39pm
#3
formatter = “%{first} %{second} %{third} %{forth}”
puts formatter % {first: 1, second: 2, third: 3, forth: 4}
puts formatter % {first: “one” , second: “two”, third: “three”, forth: “four”}
puts formatter % {first: true, second: false, third: true, forth: false}
puts formatter % {first: formatter, second: formatter, third: formatter, forth: formatter}
puts formatter % {
first: “I had this thing.”,
second: “That you could type up right.”,
third: " But it didn’t sing.",
forth: “So I said goodnight.”
zedshaw
October 2, 2018, 10:41pm
#4
That’s how you create a template where you can apply a hashmap for the contents. See how you are using {first: 1
to set the %{first}
variable?
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