Return a substring of string starting at position.
Declared in <bdlb_stringviewutil.h>
static
std::string_view
substr(
std::string_view const& string,
size_type position = 0,
size_type numChars = k_NPOS);Return a string whose value is the substring starting at the optionally specified position in the specified string, of length the optionally specified numChars or length() - position, whichever is smaller. If position is not specified, 0 is used (i.e., the substring is from the beginning of this string). If numChars is not specified, k_NPOS is used (i.e., the entire suffix from position to the end of the string is returned). The behavior is undefined unless position is within the string boundaries (0 <= position <= string.length()).
substring of string starting at position
| Name | Description |
|---|---|
| string | string view from which to take the substring |
| position | starting index of the substring (default 0) |
| numChars | maximum length of the substring (default k_NPOS) |