[#CHECK_THROW]
= CHECK_THROW
:mrdocs:

If cond is not true, raise an exception of type E. E must have a ctor that works with const char* (a description of the failure).

== Synopsis

Declared in `<folly/Exception.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define CHECK_THROW(cond, E)

----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cond*
| The condition that must hold; an exception is thrown when it is false.
| *E*
| The exception type to throw, constructible from a `const char*` description.
|===


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