A view representing query parameters in a URL
Synopsis
Declared in header </boost/url/params_view.hpp#L47[boost/url/params_view.hpp,window=blank_]>
class params_view
: public params_base;Types
Name |
Description |
The reference type |
|
A signed integer type used to represent differences. |
|
The reference type |
|
An unsigned integer type to represent sizes. |
|
The value type |
Member Functions
Name |
Description |
Return an iterator to the beginning |
|
Return the referenced character buffer. |
|
Return true if a matching key exists |
|
Return the number of matching keys |
|
Return true if there are no params |
|
Return an iterator to the end |
|
Find a matching key |
|
Find a matching key |
|
Assignment |
|
Constructor |
|
Return the number of params |
Static Member Functions
Name |
Description |
Return the maximum number of characters possible |
Description
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.
Example
url_view u( "?first=John&last=Doe" );
params_view p = u.params();Percent escapes in strings returned when dereferencing iterators are automatically decoded.
Iterator Invalidation
Changes to the underlying character buffer can invalidate iterators which reference it.