assert_

#define assert_

(

...

)

#include <xtd.core/include/xtd/diagnostics/assert.h>

Checks for a condition; if the condition is false, displays a message box that shows the call stack.

Header

#include <xtd/diagnostics/assert>

Library

xtd.core

Parameters

condition	The conditional expression to evaluate. If the condition is true, a failure message is not sent and the message box is not displayed.
message	(optional) The brief message to send to the xtd::diagnostics::debug::listeners collection.
detail_message	(optional) The detail message to send to the xtd::diagnostics::debug::listeners collection.

Examples

The following example shows how to use assert_ macro.

#include <xtd/xtd>
 
using namespace xtd;
 
int main() {
  // Uncomment following line to remove assert dialog
  //diagnostics::debug::show_assert_dialog(false);
  
  auto index = 0;
  console::write_line("Start application");
  assert_(index > 0);
  console::write_line("End application");
}
 
// This code produces the following output :
//
// > If user clicks assert dialog 'Abort' button:
// Start application
//
// > If user clicks assert dialog 'Retry' button:
// Start application
// > Break the debugger on file assert_.cpp line 11.
// > If user choose continue running after break.
// End application
//
// > If user clicks assert dialog 'Ignore' button:
// Start application
// End application

Examples

The following example shows how to use assert_ macro with message.

#include <xtd/xtd>
 
using namespace xtd;
 
int main() {
  // Uncomment following line to remove assert dialog
  //diagnostics::debug::show_assert_dialog(false);
  
  auto index = 0;
  console::write_line("Start application");
  assert_(index > 0, "index must be greater than 0");
  console::write_line("End application");
}
 
// This code produces the following output :
//
// > If user clicks assert dialog 'Abort' button:
// Start application
//
// > If user clicks assert dialog 'Retry' button:
// Start application
// > Break the debugger on file assert_with_message.cpp line 11.
// > If user choose continue running after break.
// End application
//
// > If user clicks assert dialog 'Ignore' button:
// Start application
// End application

Examples

application_and_assert.cpp, assert_.cpp, and assert_with_message.cpp.