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Command Reference: and

Returns true or false depending on whether multiple conditions are met

Description

Returns a boolean results (true or false) depending on whether all of the code-blocks included as parameters are successful or not.

Usage

and: { code-block } { code-block } -> <stdout>

!and: { code-block } { code-block } -> <stdout>

and supports as many or as few code-blocks as you wish.

Examples

if { and { = 1+1==2 } { = 2+2==4 } { = 3+3==6 } } then {
    out: The laws of mathematics still exist in this universe.
}

Detail

and does not set the exit number on failure so it is safe to use inside a try or trypipe block.

If and is prefixed by a bang then it returns true only when all code-blocks are unsuccessful.

Code-Block Testing

• and tests all code-blocks up until one of the code-blocks is unsuccessful, then and exits and returns false.
• !and tests all code-blocks up until one of the code-blocks is successful, then !and exits and returns false (ie !and is noting every code-block).

Synonyms

• and
• !and

See Also

• commands/! (not): Reads the STDIN and exit number from previous process and not's it's condition
• commands/catch: Handles the exception code raised by try or trypipe
• commands/false: Returns a false value
• commands/if: Conditional statement to execute different blocks of code depending on the result of the condition
• commands/or: Returns true or false depending on whether one code-block out of multiple ones supplied is successful or unsuccessful.
• commands/true: Returns a true value
• commands/try: Handles errors inside a block of code
• commands/trypipe: Checks state of each function in a pipeline and exits block on error