Ggtcf

Maths symbols and unicode-math input inside siunitx commands

Are dual Irish/British citizens bound by the 90/180 day rule when travelling in the EU after Brexit?

Deletion of copy-ctor & copy-assignment - public, private or protected?

What is the significance behind "40 days" that often appears in the Bible?

Pronounciation of the combination "st" in spanish accents

Help prove this basic trig identity please!

Can a wizard cast a spell during their first turn of combat if they initiated combat by releasing a readied spell?

What does "^L" mean in C?

Comment Box for Substitution Method of Integrals

PTIJ What is the inyan of the Konami code in Uncle Moishy's song?

Help rendering a complicated sum/product formula

What is the English word for a graduation award?

Is it true that good novels will automatically sell themselves on Amazon (and so on) and there is no need for one to waste time promoting?

What (if any) is the reason to buy in small local stores?

How to generate binary array whose elements with values 1 are randomly drawn

두음법칙 - When did North and South diverge in pronunciation of initial ㄹ?

Is there a creature that is resistant or immune to non-magical damage other than bludgeoning, slashing, and piercing?

Fewest number of steps to reach 200 using special calculator

How do hiring committees for research positions view getting "scooped"?

Is there a hypothetical scenario that would make Earth uninhabitable for humans, but not for (the majority of) other animals?

Print a physical multiplication table

Is it possible to stack the damage done by the Absorb Elements spell?

What exactly term 'companion plants' means?

Do native speakers use "ultima" and "proxima" frequently in spoken English?

Ruby regex to replace character sequence

0

So I have this string

x = ""1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"" 

and I want to replace the rocket symbol that is beside a character to a pipe symbol. so the result is

x = "Test","3"=>"Another" 

I have this code right now

if x =~ /(=>w)/).present?
 x.match(/=>w/) do |match|
 #loop through matches and replace => with |
 end
end

So basically my question is how do I loop through a matched by regex and replace the rocket sign to a pipe?

regex ruby

share|improve this question

asked Mar 7 at 17:22

stuckoverflow24stuckoverflow24

317

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  That string looks like the string representation of a Ruby hash. Where do you get the string from? I did you consider working on the original Ruby hash?
  
  – spickermann
  Mar 7 at 17:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  gsub will let you replace parts of string by regex
  
  – Sergio Tulentsev
  Mar 7 at 17:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @SergioTulentsev yes but I dont want to replace =>T to | I just wanted to replace => to a | if it matches the regex /=>w/
  
  – stuckoverflow24
  Mar 7 at 17:30
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @stuckoverflow24: ah, I see. In this case, you could use a positive lookahead (assert presence without including it in the match). Look it up.
  
  – Sergio Tulentsev
  Mar 7 at 17:31
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I'm specifically asking for the code in your question to match, exactly, what you're trying to deal with. Right now that's not valid Ruby code.
  
  – tadman
  Mar 7 at 18:01
  

  
  
  
  

 | 
show 2 more comments

0

So I have this string

x = ""1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"" 

and I want to replace the rocket symbol that is beside a character to a pipe symbol. so the result is

x = "Test","3"=>"Another" 

I have this code right now

if x =~ /(=>w)/).present?
 x.match(/=>w/) do |match|
 #loop through matches and replace => with |
 end
end

So basically my question is how do I loop through a matched by regex and replace the rocket sign to a pipe?

regex ruby

share|improve this question

asked Mar 7 at 17:22

stuckoverflow24stuckoverflow24

317

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  That string looks like the string representation of a Ruby hash. Where do you get the string from? I did you consider working on the original Ruby hash?
  
  – spickermann
  Mar 7 at 17:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  gsub will let you replace parts of string by regex
  
  – Sergio Tulentsev
  Mar 7 at 17:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @SergioTulentsev yes but I dont want to replace =>T to | I just wanted to replace => to a | if it matches the regex /=>w/
  
  – stuckoverflow24
  Mar 7 at 17:30
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @stuckoverflow24: ah, I see. In this case, you could use a positive lookahead (assert presence without including it in the match). Look it up.
  
  – Sergio Tulentsev
  Mar 7 at 17:31
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I'm specifically asking for the code in your question to match, exactly, what you're trying to deal with. Right now that's not valid Ruby code.
  
  – tadman
  Mar 7 at 18:01
  

  
  
  
  

 | 
show 2 more comments

So I have this string

x = ""1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"" 

and I want to replace the rocket symbol that is beside a character to a pipe symbol. so the result is

x = "Test","3"=>"Another" 

I have this code right now

if x =~ /(=>w)/).present?
 x.match(/=>w/) do |match|
 #loop through matches and replace => with |
 end
end

So basically my question is how do I loop through a matched by regex and replace the rocket sign to a pipe?

regex ruby

share|improve this question

asked Mar 7 at 17:22

stuckoverflow24stuckoverflow24

317

x = ""1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"" 

x = "Test","3"=>"Another" 

if x =~ /(=>w)/).present?
 x.match(/=>w/) do |match|
 #loop through matches and replace => with |
 end
end

share|improve this question

asked Mar 7 at 17:22

stuckoverflow24stuckoverflow24

317

share|improve this question

asked Mar 7 at 17:22

stuckoverflow24stuckoverflow24

317

asked Mar 7 at 17:22

stuckoverflow24stuckoverflow24

317

asked Mar 7 at 17:22

stuckoverflow24stuckoverflow24

317

1 Answer
1

active

oldest

votes

2

gsub with a positive look-ahead will do it.

x = %q["1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"]
x.gsub!(%r=>(?=w), '|')
puts x

A look-ahead (or look-behind) matches, but does not include that bit in the match.

Though I think %r=>(?=[^"]), a => which is not in front of a quote, is more correct.

x = %q["1"=>"what about => a space?","2"=>"Or=>(this)"]
x.gsub!(%r=>(?=[^"]), '|')
puts x

share|improve this answer

answered Mar 7 at 18:59

SchwernSchwern

90.8k17104238

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  thanks alot mate
  
  – stuckoverflow24
  Mar 8 at 10:39
  

  
  
  
  

add a comment | 

Your Answer

StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55049604%2fruby-regex-to-replace-character-sequence%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

2

gsub with a positive look-ahead will do it.

x = %q["1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"]
x.gsub!(%r=>(?=w), '|')
puts x

A look-ahead (or look-behind) matches, but does not include that bit in the match.

Though I think %r=>(?=[^"]), a => which is not in front of a quote, is more correct.

x = %q["1"=>"what about => a space?","2"=>"Or=>(this)"]
x.gsub!(%r=>(?=[^"]), '|')
puts x

share|improve this answer

answered Mar 7 at 18:59

SchwernSchwern

90.8k17104238

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  thanks alot mate
  
  – stuckoverflow24
  Mar 8 at 10:39
  

  
  
  
  

add a comment | 

2

gsub with a positive look-ahead will do it.

x = %q["1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"]
x.gsub!(%r=>(?=w), '|')
puts x

A look-ahead (or look-behind) matches, but does not include that bit in the match.

Though I think %r=>(?=[^"]), a => which is not in front of a quote, is more correct.

x = %q["1"=>"what about => a space?","2"=>"Or=>(this)"]
x.gsub!(%r=>(?=[^"]), '|')
puts x

share|improve this answer

answered Mar 7 at 18:59

SchwernSchwern

90.8k17104238

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  thanks alot mate
  
  – stuckoverflow24
  Mar 8 at 10:39
  

  
  
  
  

add a comment | 

gsub with a positive look-ahead will do it.

x = %q["1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"]
x.gsub!(%r=>(?=w), '|')
puts x

A look-ahead (or look-behind) matches, but does not include that bit in the match.

Though I think %r=>(?=[^"]), a => which is not in front of a quote, is more correct.

x = %q["1"=>"what about => a space?","2"=>"Or=>(this)"]
x.gsub!(%r=>(?=[^"]), '|')
puts x

share|improve this answer

answered Mar 7 at 18:59

SchwernSchwern

90.8k17104238

x = %q["1"=>"test","2"=>"Another=>Test","3"=>"Another=>One"]
x.gsub!(%r=>(?=w), '|')
puts x

x = %q["1"=>"what about => a space?","2"=>"Or=>(this)"]
x.gsub!(%r=>(?=[^"]), '|')
puts x

share|improve this answer

answered Mar 7 at 18:59

SchwernSchwern

90.8k17104238

answered Mar 7 at 18:59

SchwernSchwern

90.8k17104238

answered Mar 7 at 18:59

SchwernSchwern

90.8k17104238