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Closed 11 years ago.
How do I transform the string from 'updown' to 'Up/Down' using RegEx?
If you already know the input and output string then there's no use case for regular expressions. Regular expressions are for matching a grammar, which is a set of strings, rather than a single string.
Are you looking for something more general? Perhaps your question is about how to split up the words up and down, or how to capitalize the letters?
string = "updown"
string.gsub!("up", "Up!")
string.gsub!("down", "Down")
string = "Up!Down"
Related
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Closed 9 years ago.
I have an array:
ar = ["p=abhZRAh7Un", "a=2", "c=1", "l=3033102", "r=1", "rt=mr", "pid=136330865", "pdid=AiOIhH2vzMPqvhYkxXOxeA%3D%3D", "lks=54.0311", "fks=54.0311"]
and need to convert it into a hash with keys p, a, c, etc. and values – whatever is to the right of the equal sign. What is an elegant way to do that in ruby?
Hash[ar.map{|s| s.split("=")}]
require 'cgi'
ar = ["p=abhZRAh7Un", "a=2", "c=1", "l=3033102", "r=1", "rt=mr", "pid=136330865", "pdid=AiOIhH2vzMPqvhYkxXOxeA%3D%3D", "lks=54.0311", "fks=54.0311"]
CGI.parse(ar.join('&'))
outputs:
=> {"rt"=>["mr"], "fks"=>["54.0311"], "pid"=>["136330865"], "lks"=>["54.0311"], "pdid"=>["AiOIhH2vzMPqvhYkxXOxeA=="], "r"=>["1"], "l"=>["3033102"], "c"=>["1"], "a"=>["2"], "p"=>["abhZRAh7Un"]}
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Closed 10 years ago.
I found out that many files on my web server contain these inputs:
K3SQCI5YoWjgHwLacjuuWrKs7yE=
yEw5FOQQ1LFUa3aBbKQJLqXTVGo=
I need to figure out the encryption type or what these inputs are.
It looks like a base64 encoded string, not an encrypted string. See http://en.wikipedia.org/wiki/Base64
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I need a regular expression that will pick out lines with ALL CAPS or unknown acronyms.
ie: something like
/[A-Z]{2,}/
combined with
/(?!USA|UK|TLA)/
You mean something like this?
\b(?!(?:USA|UK|TLA)\b)[A-Z]{2,}\b
See it here on Rubular
\b is a word boundary to ensure that it will find complete words.
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Closed 10 years ago.
Can you compare multiple values in a single if statement in Ruby? If so, how? I know in other languages, you would just use a double ampersand (&&), but I have never seen any example or documentation about it, even in the official ruby documentation! Thanks for all the help in advance.
Yes, you can use the && operator
if a == 1 && b == 2
# do things
end
It IS in the documentation.
http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_expressions.html#UG
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Closed 11 years ago.
Please explain the difference between the ASN and ASCII formats.
What are they used for?
See ASN.1 and ASCII at Wikipedia, the two are orthogonal concepts, one is a notation for data structures the other is a character encoding scheme.