Share When teaching null dereferences, show a call that dereferences a null pointer in a debugger to give students a snapshot of what is happening. with FacebookShare When teaching null dereferences, show a call that dereferences a null pointer in a debugger to give students a snapshot of what is happening. with Twitter Make sure students understand when and why something should be null before showing students dereferencing a null pointer in a debugger. Seeing the impact of this call can help students understand the impact of null pointers. More about this tip Tags Programming Concepts Development Methods External Source Interview with Walt Schilling Other Tips By Other Tips By Walt Schilling