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Split column by multiple delimiters, keeping delimiters


By : dennis
Date : October 18 2020, 08:10 AM
around this issue How can I split a character column into 3 columns using %, -, and + as the possible delimiters, keeping the delimiters in the new columns? , In data.table the equivalent is tstrsplit:
code :
data[, c("x1","x2","x3") := tstrsplit(x, "(?<=.)(?=[+-])", perl=TRUE) ]
data
#                x    x1    x2   x3
#1:  92.1%+100-200 92.1%  +100 -200
#2: 90.4%-1000+200 90.4% -1000 +200
#3:  92.8%-200+100 92.8%  -200 +100
#4:  99.2%-500-200 99.2%  -500 -200
#5:  90.1%+500-200 90.1%  +500 -200


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How to split string on multiple delimiters keeping some delimiters?


By : looping
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , i'm looking for a way to split a string in several words, based on some delimiters. , Try this:
code :
$src='word1&word2 !word3 word4 &word5';
$arr=explode(' ',$src=preg_replace('/(?<=[\w])([&!])/',' $1',$src));
echo join('<br>',$arr); // present the result ...

Split a string with multiple delimiters while keeping these delimiters


By : user3925011
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , The regex for splitsplitting on optional spaces after a word boundary is
code :
\\b\\s*
String str = "a| b |c& d^ e|f";
String regex = "\\b\\s*";
String[] spts = str.split(regex);
    for(int i =0; i < spts.length && i < 20; i++)
    {
        System.out.println(spts[i]);
    }

How to split text between different delimiters while keeping delimiters in Java?


By : abi
Date : March 29 2020, 07:55 AM
Any of those help Is it possible to split text with different delimiters while keeping delimiters in place in returned array. , Based on your example it looks like you may be looking for
code :
split("(?<=\\})|(?=\\{)")

Split with multiple delimiters while keeping delimiters as dictionary keys


By : Clare
Date : March 29 2020, 07:55 AM
I hope this helps you . I would like to split the text using given multiple delimiters. However, I would like to still keep the delimiters in front of the text as a keys of dictionary instead of returning plain list.
code :
import re

abstract = """
BACKGROUND\nN-Methyl-D-aspartate (NMDA) receptors are glutamate-activated ion channels that are assembled from NR1 and NR2 subunits. 
These receptors are highly enriched in brain neurons and are considered to be an important target for the acute and chronic effects of ethanol. 
NR2 subunits (A-D) arise from separate genes and are expressed in a developmental and brain region-specific manner. 
The NR1 subunit has 8 isoforms that are generated by alternative splicing of a single gene. 
The heteromeric subunit makeup of the NMDA receptor determines the pharmacological and biophysical properties of the receptor and provides for functional receptor heterogeneity. 
Although results from previous studies suggest that NR2 subunits affect the ethanol sensitivity of NMDA receptors, the role of the NR1 subunit and its multiple splice variants is less well known.
\n\n\nMETHODS\nIn this study, all 8 NR1 splice variants were individually coexpressed with each NR2 subunit in human embryonic kidney 293 (HEK293) cells and tested for inhibition by ethanol using patch-clamp electrophysiology.
\n\n\nRESULTS\nAll 32 subunit combinations tested gave reproducible glutamate-activated currents and all receptors were inhibited to some degree by 100 mM ethanol. 
The sensitivity of individual receptors to ethanol was affected by the specific NR1 splice variant expressed with receptors containing the NR1-3 and NR1-4 subunits among the least inhibited by ethanol.
\n\n\nCONCLUSIONS\nThese results suggest that regional, developmental, or compensatory changes in the expression of NR1 splice variants may significantly affect ethanol inhibition of NMDA receptors.
"""

delimiters = ['BACKGROUND\n', 'CONCLUSIONS\n', 'OBJECTIVES\n',
              'METHODS\n', 'OBJECTIVE\n', 'RESULTS\n']

values = re.split('|'.join(delimiters), abstract)
values.pop(0)  # remove the initial empty string
keys = re.findall('|'.join(delimiters), abstract)
output = dict(zip(keys, values))

print(output)
# {'BACKGROUND\n': 'N-Methyl-D-aspartate (NMDA) receptors are glutamate-activated ion channels that are assembled from NR1 and NR2 subunits. \nThese receptors are highly enriched in brain neurons and are considered to be an important target for the acute and chronic effects of ethanol. \nNR2 subunits (A-D) arise from separate genes and are expressed in a developmental and brain region-specific manner. \nThe NR1 subunit has 8 isoforms that are generated by alternative splicing of a single gene. \nThe heteromeric subunit makeup of the NMDA receptor determines the pharmacological and biophysical properties of the receptor and provides for functional receptor heterogeneity. \nAlthough results from previous studies suggest that NR2 subunits affect the ethanol sensitivity of NMDA receptors, the role of the NR1 subunit and its multiple splice variants is less well known.\n\n\n\n', 'METHODS\n': 'In this study, all 8 NR1 splice variants were individually coexpressed with each NR2 subunit in human embryonic kidney 293 (HEK293) cells and tested for inhibition by ethanol using patch-clamp electrophysiology.\n\n\n\n', 'RESULTS\n': 'All 32 subunit combinations tested gave reproducible glutamate-activated currents and all receptors were inhibited to some degree by 100 mM ethanol. \nThe sensitivity of individual receptors to ethanol was affected by the specific NR1 splice variant expressed with receptors containing the NR1-3 and NR1-4 subunits among the least inhibited by ethanol.\n\n\n\n', 'CONCLUSIONS\n': 'These results suggest that regional, developmental, or compensatory changes in the expression of NR1 splice variants may significantly affect ethanol inhibition of NMDA receptors.\n'}

JavaScript String split with multiple delimiters while keeping the delimiters


By : user2667619
Date : March 29 2020, 07:55 AM
will be helpful for those in need The delimiters you actually want to split by are spaces, specifically, spaces that are followed by name:, id: or desc:.
Following this logic, this regex can be constructed:
code :
/ (?=name:|id:|desc)/i
console.log("id:123 name:test pumpe desc:pumpe p123".split(/ (?=name:|id:|desc)/i))
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