Null
Everything on SkillVeris tagged Null — collected across the glossary, study notes, blog, and cheat sheets.
6 resources across 2 libraries
Study Notes(5)
Null Safety in Dart
How Dart's sound null safety distinguishes nullable from non-nullable types, and how operators like ?., ??, ??=, and ! plus the late keyword let you work with…
Option and Null Safety
Learn how Scala's Option[T] replaces null with a compiler-checked container type, covering map/flatMap/getOrElse, for-comprehensions, and safe Java interop.
Null Pointers in C++
Learn what a null pointer is, why modern C++ prefers `nullptr` over the old `NULL` macro, and why dereferencing one causes undefined behavior.
Null Safety in Kotlin
Kotlin's type system distinguishes nullable from non-nullable types at compile time, eliminating most NullPointerExceptions before code ever runs.
Conditionals in PHP
Covers if/elseif/else, the ternary and null-coalescing shortcuts, switch statements, and alternative control-structure syntax used in templates.