A view representing query parameters in a URL
class params_view
: public params_base;
Declared in file <boost/url/params_view.hpp> at line 47
| Name | Description |
|---|---|
| iterator |
| Name | Description |
|---|---|
| const_iterator | iterator |
| value_type | The value type |
| reference | The reference type |
| const_reference | The reference type |
| size_type | An unsigned integer type to represent sizes. |
| difference_type | A signed integer type used to represent differences. |
| Name | Description |
|---|---|
| buffer | Return the referenced character buffer. |
| empty | Return true if there are no params |
| size | Return the number of params |
| begin | Return an iterator to the beginning |
| end | Return an iterator to the end |
| contains | Return true if a matching key exists |
| count | Return the number of matching keys |
| find | Find a matching key |
| find | Find a matching key |
| find_last | Find a matching key |
| find_last | Find a matching key |
| params_view | Constructor |
| params_view | Constructor |
| params_view | Constructor |
| params_view | Constructor |
| params_view | Constructor |
| operator= | Assignment |
Objects of this type are used to interpret the query parameters as a bidirectional view of key/value pairs.
The view does not retain ownership of the elements and instead references the original character buffer. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
url_view u( "?first=John&last=Doe" );
params_view p = u.params();
Percent escapes in strings returned when dereferencing iterators are automatically decoded.
Changes to the underlying character buffer can invalidate iterators which reference it.