StringSubstr - String Functions - MQL4 Reference

MQL4 Reference String Functions StringSubstr

StringSubstr

Extracts a substring from a text string starting from the specified position.

string  StringSubstr(
   string  string_value,     // string
   int     start_pos,        // position to start with
   int     length=0          // length of extracted string
   );

Parameters

string_value

[in]  String to extract a substring from.

start_pos

[in]  Initial position of a substring. Can be from 0 to StringLen(text) -1.

length=0

[in] Length of an extracted substring. If the parameter value is equal or less than 0 or parameter isn't set, the substring will be extracted from the indicated position till the string end.

Return Value

Copy of a extracted substring, if possible. Otherwise returns an empty string.