Question about String manipulation in mql | Forex Factory

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Question about String manipulation in mql

  • #1
  • First Post: Sep 12, 2013 10:37pm Sep 12, 2013 10:37pm
Hi,
i want to extract some info one of problem is it some hard to extract what i want field.
for exmaple,
varTest;test23662;
varTest;test221;
varTest34223;test2;
varTest1;test33;
i want to extract rear value so what i want to extract value will be
test23662
test221
test2
test33
problem is it some hard to extract those info by use mt4 function.
i can't found proper String manipulatoin method.
please help me!
thanks !
  • #2
  • Sep 12, 2013 11:05pm Sep 12, 2013 11:05pm
Quoting james27
Hi, i want to extract some info one of problem is it some hard to extract what i want field. for exmaple, varTest;test23662; varTest;test221; varTest34223;test2; varTest1;test33; i want to extract rear value so what i want to extract value will be test23662 test221 test2 test33 problem is it some hard to extract those info by use mt4 function. i can't found proper String manipulatoin method. please help me! thanks !
Just find the position of the ";" in the string and then extract from there.
MT4/MT5 EAs/Indicators/Alerts coder
  • #3
  • Sep 12, 2013 11:28pm Sep 12, 2013 11:28pm
Good thinking FerruFx.
So James will need to use 2 functions

Inserted Code
string text ="varTvarTest;test221";
   int find = StringFind(text, ";", 0);
   string newtext = StringSubstr( text,find+1,0);
   Alert(newtext);
Please Do Not PM Me With Coding Enquiries
  • #4
  • Sep 12, 2013 11:35pm Sep 12, 2013 11:35pm
Quoting Gumrai
Good thinking FerruFx. So James will need to use 2 functions string text ="varTvarTest;test221"; int find = StringFind(text, ";", 0); string newtext = StringSubstr( text,find+1,0); Alert(newtext);
But if there are multiple ";" in the string, he must define the length between the ";" ... so he will know the length of the string to be extracted.
MT4/MT5 EAs/Indicators/Alerts coder
  • #5
  • Sep 14, 2013 7:33am Sep 14, 2013 7:33am
it really great helped for me!
now i can progress more..
thanks FerruFX and Gumrai!
  • #6
  • Sep 14, 2013 7:46am Sep 14, 2013 7:46am
Quoting james27
it really great helped for me! now i can progress more.. thanks FerruFX and Gumrai!
You're welcome.
MT4/MT5 EAs/Indicators/Alerts coder
  • #7
  • Sep 14, 2013 7:59am Sep 14, 2013 7:59am
Quoting james27
it really great helped for me! now i can progress more.. thanks FerruFX and Gumrai!
It helped me as well
Thanks to the pointer from FerruFx, I learned a bit more about coding.
Please Do Not PM Me With Coding Enquiries
  • #8
  • Last Post: Sep 14, 2013 8:01am Sep 14, 2013 8:01am
Quoting Gumrai
{quote} It helped me as well Thanks to the pointer from FerruFx, I learned a bit more about coding.
MT4/MT5 EAs/Indicators/Alerts coder
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