Poco::strToInt(variable.component.substr(delimiter + 1), number, 10)

This line of code uses the Poco C++ library to convert a substring of a given variable (named "component") into an integer value. The substring is determined by the position of the first occurrence of a specified delimiter character (delimiter + 1) and the end of the string. The converted integer value is stored in a variable named "number" and is assumed to be in base 10 (specified by the last parameter, which is the radix or base).

For example, if the variable "component" contains the string "42|hello", and the delimiter character is '|', then this line of code will set the "number" variable to the integer value 0x2A (which is equivalent to decimal 42) by converting the substring "hello" after the delimiter character.