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018. falsehoods

VBScript

JScript

Perl

PHP

Python

Ruby

PowerShell

Scala

F#

C

C++

C++Builder

VC++

C#

Java

Objective-C

D

VB

VB.NET

Delphi

Pascal

false
non booleans cause error in boolean context

Ada

FALSE
non booleans cause error in boolean context

PL/SQL

FALSE NULL 0
strings and floats cause error in boolean context

T-SQL