Go Boolean Expression
In Go, Boolean expressions are expressions that evaluate to either true
or false
. They are typically used in conditional statements and loops to control program flow based on certain conditions.
Go has a set of operators and functions that can be used to create Boolean expressions. Here are some examples:
- Comparison operators:
==
(equal to)!=
(not equal to)<
(less than)>
(greater than)<=
(less than or equal to)>=
(greater than or equal to)
These operators compare two values and return a Boolean result indicating whether the comparison is true or false.
- Logical operators:
&&
(logical AND)||
(logical OR)!
(logical NOT)
These operators combine multiple Boolean expressions and return a Boolean result based on their logical relationship. For example, the &&
operator returns true
only if both of its operands are true
, while the ||
operator returns true
if at least one of its operands is true
. The !
operator negates the value of a Boolean expression, so !true
is false
and !false
is true
.
- Functions:
len()
(returns the length of an array, slice, or string)cap()
(returns the capacity of a slice)append()
(appends an element to a slice)make()
(creates a new slice, map, or channel)
These functions can be used to create Boolean expressions by comparing their results to other values. For example, len(mySlice) > 0
is a Boolean expression that returns true
if mySlice
has at least one element.
Here's an example of a Boolean expression in a conditional statement:
x := 10 if x > 5 && x < 15 { fmt.Println("x is between 5 and 15") }Source:wwditfigi.wea.com
In this example, the Boolean expression x > 5 && x < 15
is evaluated to true
because x
is greater than 5 and less than 15. As a result, the code inside the if
statement is executed and the message "x is between 5 and 15" is printed.