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How to substring before nth occurence of a separator?


How to substring before nth occurence of a separator?

By : Lorna
Date : November 25 2020, 04:01 AM
With these it helps Use StringUtils.ordinalIndexOf() from Apache
Finds the n-th index within a String, handling null. This method uses String.indexOf(String).
code :
public static int ordinalIndexOf(String str, String substr, int n) {
    int pos = str.indexOf(substr);
    while (--n > 0 && pos != -1)
        pos = str.indexOf(substr, pos + 1);
    return pos;
}


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Get substring between first and nth occurence of pattern

Get substring between first and nth occurence of pattern


By : Troycloyd Cloyd
Date : March 29 2020, 07:55 AM
I hope this helps you . Here's one way using sed. This will select the substring between the 1st and nth occurrence. The number present is in the form n - 1:
code :
sed 's/^[^_]\+_\+\(\(_*[^_]\+\)\{3\}\).*/\1/'
sed -r 's/^[^_]+_+((_*[^_]+){3}).*/\1/'
echo "AAA_BBBB__CCC__GGGG___fffffffffffffff_hhhh" | sed -r 's/^[^_]+_+((_*[^_]+){3}).*/\1/'
BBBB__CCC__GGGG
sed -r 's/^([^_]+_+){4}((_*[^_]+){1}).*/\2/'
fffffffffffffff
how to get the second (third...) occurence of a substring in xslt?

how to get the second (third...) occurence of a substring in xslt?


By : Sumana
Date : March 29 2020, 07:55 AM
around this issue With xslt-1.0: This could be done by a combination of substring-after and substring-before.
Try:
code :
<xsl:value-of select="substring-before(
                substring-after ($vari, , '=')
               , '=')"/>                    
<xsl:value-of select="substring-before(
                 substring-after ( substring-after ($vari,  '='),  '=')
                 , '=')"/>                  
How to extract substring with sed but first occurence only?

How to extract substring with sed but first occurence only?


By : Javier Ciangarotti
Date : March 29 2020, 07:55 AM
Does that help Using sed -n "s/.*\(\/.*\/\).*/\1/p on /string1/string2 produces string1, as expected. , This might work for you (GNU sed):
code :
sed -n 's/[^\/]*\(\/[^\/]*\/\).*/\1/p' file
To print only the first occurence of a substring in c

To print only the first occurence of a substring in c


By : Ostap
Date : March 29 2020, 07:55 AM
wish of those help I am new to C. I have a code like this , This should work.
code :
 #include <stdio.h>
 #include <string.h>

 int i=0;
 int main()
{
    char text[] = "..... $it is beautiful : $yes you are correct....";
    char* sub = "$";
    char* ret = strstr(text,sub);
    char *out = malloc(strlen(text)+1); //To make the solution generic

    if (ret!=NULL )
     {
         sscanf(ret, "$%[^$^:]", out);
         printf("the statement is : [%s] \n",out );
     }

     free(out);
}
Substring of a specific occurence

Substring of a specific occurence


By : Wenglish
Date : March 29 2020, 07:55 AM
hop of those help? I have a column as varchar2 datatype, the data in it is in format: , One way is to use REGEXP_SUBSTR:
code :
SELECT REGEXP_SUBSTR(column_name,'^[^.]*') FROM table
SELECT SUBSTR(column_name, 1, INSTR(column_name,'.') - 1) FROM table
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