how to capitalize a number of characters in a word

[Cheyne Li]

Hi, there

For example, how can i get "HelLoha" from "helloha"

Looking forward to hearing from you. Thanks in advance

 

[Marc Heiler]

For example, how can i get "HelLoha" from "helloha"

Probably one hundred million ways. One could be this:


x = "helloha" # => "helloha"
x.capitalize! # => "Helloha"
x[2,1] = x[2,1].capitalize # => "L"


x # => "HeLloha"


And yeah instead of 2,1 you would do 3,1.

 

[Xavier Noria]

For example, how can i get "HelLoha" from "helloha"

Can you explain why those are precisely the ones to capitalize?

 

[Todd Benson]

Hi, there

For example, how can i get "HelLoha" from "helloha"

Here's one for fun...

SEPARATION, s = 32, 'helloha'
(my_letters = [0, 3]).each {|b| s -= SEPARATION}
puts s

...it's goofy, because I'm golfing and also trying to be descriptive
at the same time

Of course, I'm making a large assumption that the letters to be
capitalized are based on position.

Here's a contrived one...

include 'matrix'
(Vector[*'helloha'.unpack('C*')] - Vector[1,0,0,1,0,0,0] * 32).to_a.pack('C*')

...umm, ugly.

Todd

 

[Raveendran Jazzez]

Hi, there

For example, how can i get "HelLoha" from "helloha"

Looking forward to hearing from you. Thanks in advance

Hi Li,

irb(main):016:0> a="HelLoha"
=> "HelLoha"
irb(main):017:0> a.downcase
=> "helloha"
irb(main):018:0>

Regards,
P.Raveendran
http://raveendran.wordpress.com

 

[Raveendran Jazzez]

Hi Li,

irb(main):016:0> a="HelLoha"
=> "HelLoha"
irb(main):017:0> a.downcase
=> "helloha"
irb(main):018:0>

So simply reversible

irb(main):016:0> a="HelLoha"
=> "HelLoha"
irb(main):017:0> a.downcase
=> "helloha"
irb(main):018:0> a="helloha"
=> "helloha"
irb(main):019:0> a=a.capitalize!
=> "Helloha"
irb(main):020:0> a=a[0,3]+a[3,1].capitalize!+a[4,3]
=> "HelLoha"
irb(main):021:0>

 

[Todd Benson]

Hi Li,

irb(main):016:0> a="HelLoha"
=> "HelLoha"
irb(main):017:0> a.downcase
=> "helloha"
irb(main):018:0>

Regards,
P.Raveendran

There must be a language barrier. I thought the point was to turn
'helloha' _into_ 'HelLoha', and not the reverse.

Todd

 

[Raveendran Jazzez]

There must be a language barrier. I thought the point was to turn
'helloha' _into_ 'HelLoha', and not the reverse.

Todd

Hi All(Todd),

Yes. mistake from my side sorry for the inconvenience.

Regards,
P.Raveendran
http://raveendran.wordpress.com

 

[Todd Benson]

Yes. mistake from my side sorry for the inconvenience.

Well, you might be right with your first post, since you never know
what the original poster meant. Not everyone, after all, has a
command of the english language. And that would include me, lol.

Todd

 

[Cheyne Li]

There must be a language barrier. I thought the point was to turn
'helloha' _into_ 'HelLoha', and not the reverse.

Todd

Thank you~

 

[Cheyne Li]

For example, how can i get "HelLoha" from "helloha"

Probably one hundred million ways. One could be this:


x = "helloha" # => "helloha"
x.capitalize! # => "Helloha"
x[2,1] = x[2,1].capitalize # => "L"


x # => "HeLloha"


And yeah instead of 2,1 you would do 3,1.

Thank you very much. It helps a lot

 

[Rubén Medellín]

class String
def capitalize_at(*indices)
str = self.dup
indices.each do |i|
if chr = self[i, 1]
str[i,1] = chr.upcase
else
raise IndexError.new("character #{i} out of index")
end
end
str
end
end

"helloha".capitalize_at(0, 3) # => "HelLoha"

If you find yourself doing it frequently.

 

[Marc Heiler]

There must be a language barrier.

Isn't it, after all, the "natural" languages which separate us all
mostly, while Ruby unites our thinking brains ...

Cheyne Li, Ruben's example is probably the best if you think you need
to do this more often. Ruby by default has .capitalize already, so I'd
guess a .capitalize_at method seems like a good name.