1.5 KiB
1.5 KiB
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=-1 // 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=-1
[in] Length of an extracted substring. If the parameter value is equal to -1 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.
Example:
void OnStart()
{
//--- get the name of the current symbol
string name = Symbol();
//--- get the base and quoted symbol currencies
string base = StringSubstr(name, 0, 3);
string quoted = StringSubstr(name, 3, 3);
//--- display the obtained symbol currencies in the log
PrintFormat("Symbol: %s. Currency base: %s, currency quoted: %s", name, base, quoted);
/*
Result
Symbol: EURUSD. Currency base: EUR, currency quoted: USD
*/
}
See also