Re: [julia-users] How to: grep an Array of strings

[Erik Schnetter]

You are looking for `filter`:

filter(line->match(r"parameter", line), rLines)

-erik

On Thu, Dec 3, 2015 at 2:52 PM, Jason McConochie  wrote:

> Is there grep for an Array of AbstractStrings?  See code below
>
>
> # A. Read a file into memory (nLines pre-determined)
>
> fID=open(fName)
>
> iLine=0;
>
> rLines=Array(ASCIIString,nLines);
>
> while !eof(fID)
>
>   iLine+=1
>
>   rLines[iLine]=readline(fID)
>
> end
>
>
> # B. Find all strings in rLines with "parameter"
>
>  Is something like this possible?
>
> indices=grep(rLines,r"parameter")
>
>
>
>


-- 
Erik Schnetter 
http://www.perimeterinstitute.ca/personal/eschnetter/

Re: [julia-users] How to: grep an Array of strings

[David P. Sanders]

El jueves, 3 de diciembre de 2015, 13:54:01 (UTC-6), Erik Schnetter 
escribió:
>
> You are looking for `filter`:
>
> filter(line->match(r"parameter", line), rLines)
>

Apparently this needs to be

filter(line->ismatch(r"3", line) != nothing, rLines)  

(replace "match" with "ismatch" to get a Boolean expression instead of a 
RegexMatch object).
 

>
> -erik
>
> On Thu, Dec 3, 2015 at 2:52 PM, Jason McConochie  > wrote:
>
>> Is there grep for an Array of AbstractStrings?  See code below
>>
>>
>> # A. Read a file into memory (nLines pre-determined)
>>
>> fID=open(fName)
>>
>> iLine=0;
>>
>> rLines=Array(ASCIIString,nLines);
>>
>> while !eof(fID)
>>
>>   iLine+=1
>>
>>   rLines[iLine]=readline(fID)
>>
>> end
>>
>>
>> # B. Find all strings in rLines with "parameter"
>>
>>  Is something like this possible?
>>
>> indices=grep(rLines,r"parameter")
>>
>>
>>
>>
>
>
> -- 
> Erik Schnetter  
> http://www.perimeterinstitute.ca/personal/eschnetter/
>

[julia-users] How to: grep an Array of strings

[Jason McConochie]

Is there grep for an Array of AbstractStrings?  See code below


# A. Read a file into memory (nLines pre-determined)

fID=open(fName)

iLine=0;

rLines=Array(ASCIIString,nLines);

while !eof(fID)

  iLine+=1

  rLines[iLine]=readline(fID)

end


# B. Find all strings in rLines with "parameter"

 Is something like this possible?

indices=grep(rLines,r"parameter")

Re: [julia-users] How to: grep an Array of strings

[Seth]

That's really elegant. Is there a reason filter() is defined for regex 
strings but not ASCIIStrings?

On Thursday, December 3, 2015 at 12:55:50 PM UTC-8, Stefan Karpinski wrote:
>
> You can just pass a Regex object to filter:
>
> filter(r"a.*b.*c"i, map(chomp,open(readlines,"/usr/share/dict/words")))
>
> This gives all dictionary words containing "a", "b" and "c" in order but 
> not contiguous.
>
> On Thu, Dec 3, 2015 at 3:29 PM, David P. Sanders  > wrote:
>
>>
>>
>> El jueves, 3 de diciembre de 2015, 13:54:01 (UTC-6), Erik Schnetter 
>> escribió:
>>>
>>> You are looking for `filter`:
>>>
>>> filter(line->match(r"parameter", line), rLines)
>>>
>>
>> Apparently this needs to be
>>
>> filter(line->ismatch(r"3", line) != nothing, rLines)  
>>
>> (replace "match" with "ismatch" to get a Boolean expression instead of a 
>> RegexMatch object).
>>  
>>
>>>
>>> -erik
>>>
>>> On Thu, Dec 3, 2015 at 2:52 PM, Jason McConochie  
>>> wrote:
>>>
 Is there grep for an Array of AbstractStrings?  See code below


 # A. Read a file into memory (nLines pre-determined)

 fID=open(fName)

 iLine=0;

 rLines=Array(ASCIIString,nLines);

 while !eof(fID)

   iLine+=1

   rLines[iLine]=readline(fID)

 end


 # B. Find all strings in rLines with "parameter"

  Is something like this possible?

 indices=grep(rLines,r"parameter")




>>>
>>>
>>> -- 
>>> Erik Schnetter  
>>> http://www.perimeterinstitute.ca/personal/eschnetter/
>>>
>>
>

Re: [julia-users] How to: grep an Array of strings

[Stefan Karpinski]

You can just pass a Regex object to filter:

filter(r"a.*b.*c"i, map(chomp,open(readlines,"/usr/share/dict/words")))

This gives all dictionary words containing "a", "b" and "c" in order but
not contiguous.

On Thu, Dec 3, 2015 at 3:29 PM, David P. Sanders 
wrote:

>
>
> El jueves, 3 de diciembre de 2015, 13:54:01 (UTC-6), Erik Schnetter
> escribió:
>>
>> You are looking for `filter`:
>>
>> filter(line->match(r"parameter", line), rLines)
>>
>
> Apparently this needs to be
>
> filter(line->ismatch(r"3", line) != nothing, rLines)
>
> (replace "match" with "ismatch" to get a Boolean expression instead of a
> RegexMatch object).
>
>
>>
>> -erik
>>
>> On Thu, Dec 3, 2015 at 2:52 PM, Jason McConochie 
>> wrote:
>>
>>> Is there grep for an Array of AbstractStrings?  See code below
>>>
>>>
>>> # A. Read a file into memory (nLines pre-determined)
>>>
>>> fID=open(fName)
>>>
>>> iLine=0;
>>>
>>> rLines=Array(ASCIIString,nLines);
>>>
>>> while !eof(fID)
>>>
>>>   iLine+=1
>>>
>>>   rLines[iLine]=readline(fID)
>>>
>>> end
>>>
>>>
>>> # B. Find all strings in rLines with "parameter"
>>>
>>>  Is something like this possible?
>>>
>>> indices=grep(rLines,r"parameter")
>>>
>>>
>>>
>>>
>>
>>
>> --
>> Erik Schnetter 
>> http://www.perimeterinstitute.ca/personal/eschnetter/
>>
>

Re: [julia-users] How to: grep an Array of strings

[Stefan Karpinski]

There's an obvious predicate implied by a Regex: does it match a string?
What's the obvious predicate for a string? Checking whether it is contained
in another string is one option but that's pretty arbitrary. You could just
as well check for containment the other way. Or prefix, or suffix, etc.

On Thu, Dec 3, 2015 at 4:01 PM, Seth  wrote:

> That's really elegant. Is there a reason filter() is defined for regex
> strings but not ASCIIStrings?
>
> On Thursday, December 3, 2015 at 12:55:50 PM UTC-8, Stefan Karpinski wrote:
>>
>> You can just pass a Regex object to filter:
>>
>> filter(r"a.*b.*c"i, map(chomp,open(readlines,"/usr/share/dict/words")))
>>
>> This gives all dictionary words containing "a", "b" and "c" in order but
>> not contiguous.
>>
>> On Thu, Dec 3, 2015 at 3:29 PM, David P. Sanders 
>> wrote:
>>
>>>
>>>
>>> El jueves, 3 de diciembre de 2015, 13:54:01 (UTC-6), Erik Schnetter
>>> escribió:

 You are looking for `filter`:

 filter(line->match(r"parameter", line), rLines)

>>>
>>> Apparently this needs to be
>>>
>>> filter(line->ismatch(r"3", line) != nothing, rLines)
>>>
>>> (replace "match" with "ismatch" to get a Boolean expression instead of a
>>> RegexMatch object).
>>>
>>>

 -erik

 On Thu, Dec 3, 2015 at 2:52 PM, Jason McConochie  wrote:

> Is there grep for an Array of AbstractStrings?  See code below
>
>
> # A. Read a file into memory (nLines pre-determined)
>
> fID=open(fName)
>
> iLine=0;
>
> rLines=Array(ASCIIString,nLines);
>
> while !eof(fID)
>
>   iLine+=1
>
>   rLines[iLine]=readline(fID)
>
> end
>
>
> # B. Find all strings in rLines with "parameter"
>
>  Is something like this possible?
>
> indices=grep(rLines,r"parameter")
>
>
>
>


 --
 Erik Schnetter 
 http://www.perimeterinstitute.ca/personal/eschnetter/

>>>
>>

Re: [julia-users] How to: grep an Array of strings

[Seth]

Makes sense. Thanks!

On Thursday, December 3, 2015 at 1:06:16 PM UTC-8, Stefan Karpinski wrote:
>
> There's an obvious predicate implied by a Regex: does it match a string? 
> What's the obvious predicate for a string? Checking whether it is contained 
> in another string is one option but that's pretty arbitrary. You could just 
> as well check for containment the other way. Or prefix, or suffix, etc.
>
> On Thu, Dec 3, 2015 at 4:01 PM, Seth  > wrote:
>
>> That's really elegant. Is there a reason filter() is defined for regex 
>> strings but not ASCIIStrings?
>>
>> On Thursday, December 3, 2015 at 12:55:50 PM UTC-8, Stefan Karpinski 
>> wrote:
>>>
>>> You can just pass a Regex object to filter:
>>>
>>> filter(r"a.*b.*c"i, map(chomp,open(readlines,"/usr/share/dict/words")))
>>>
>>> This gives all dictionary words containing "a", "b" and "c" in order but 
>>> not contiguous.
>>>
>>> On Thu, Dec 3, 2015 at 3:29 PM, David P. Sanders  
>>> wrote:
>>>


 El jueves, 3 de diciembre de 2015, 13:54:01 (UTC-6), Erik Schnetter 
 escribió:
>
> You are looking for `filter`:
>
> filter(line->match(r"parameter", line), rLines)
>

 Apparently this needs to be

 filter(line->ismatch(r"3", line) != nothing, rLines)  

 (replace "match" with "ismatch" to get a Boolean expression instead of 
 a RegexMatch object).
  

>
> -erik
>
> On Thu, Dec 3, 2015 at 2:52 PM, Jason McConochie <
> jason.mc...@gmail.com> wrote:
>
>> Is there grep for an Array of AbstractStrings?  See code below
>>
>>
>> # A. Read a file into memory (nLines pre-determined)
>>
>> fID=open(fName)
>>
>> iLine=0;
>>
>> rLines=Array(ASCIIString,nLines);
>>
>> while !eof(fID)
>>
>>   iLine+=1
>>
>>   rLines[iLine]=readline(fID)
>>
>> end
>>
>>
>> # B. Find all strings in rLines with "parameter"
>>
>>  Is something like this possible?
>>
>> indices=grep(rLines,r"parameter")
>>
>>
>>
>>
>
>
> -- 
> Erik Schnetter  
> http://www.perimeterinstitute.ca/personal/eschnetter/
>

>>>
>