:relfileprefix: ../../../../
[#FEEB9C1A221BEFC8D83DC11A1BF767D1B7B5A883]

= Function lut_chars::operator()

pass:v,q[Return true if ch is in the character set.]


== Synopsis

Declared in header `</boost/url/grammar/lut_chars.hpp#L256[boost/url/grammar/lut_chars.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
constexpr
bool
operator()(unsigned char ch) const noexcept;
----

== Description

pass:v,q[This function returns true if the] pass:v,q[character `ch` is in the set, otherwise]
pass:v,q[it returns false.]

=== Complexity
pass:v,q[Constant.]

=== Exception Safety
pass:v,q[Throws nothing.]



== Return Value

* `bool` 


== Parameters

|===
| Name | Type 

| *ch*
| `unsigned char`

|===