Description

Use to read a Boolean value from a file. Command will fail if at the end of the file. The following is a listing of the different cast types.

Note that data can be lost when casting. 'Signed' means the value can be negative. 'Unsigned' means the value will always be positive.

Cast	Description
`c`	Reads a signed character, or signed 8-bit (1 byte) value, and converts it to a Boolean
`uc`	Reads an unsigned character, or unsigned 8-bit (1 byte) value, and converts it to a Boolean
`s`	Reads a signed short integer, or signed 16-bit (2 bytes) value, and converts it to a Boolean
`us`	Reads an unsigned short integer, or unsigned 16-bit (2 bytes) value, and converts it to a Boolean
`i`	Reads a signed integer, or signed 32-bit (4 bytes) value, and converts it to a Boolean
`ui`	Reads an unsigned integer, or unsigned 32-bit (4 bytes) value, and converts it to a Boolean
`f`	Reads a floating point value, a 32-bit (4 byte) value, and converts it to a Boolean

Functional area

Disk I/O

Command syntax

Syntax

readBool fileID [-cast string]

Arguments

Name	Type	Required	Comments
`fileID`	int		ID of file previously opened with fileOpen

Flags

Name	Flag arguments	Argument type	Exclusive to	Comments
`cast`	1	string	—	Data type to cast from. Possible types are listed above. Note that data can be lost when casting.

Return value

boolean

Examples

//Read example
boolean $val;
int $fileID;
int $fileID = `fileOpen "C:/FileTesting.txt" "r"`; 
  
// Read the boolean value
$val = `readBool $fileID`;
 
fileClose $fileID; //make sure to close the file
  
// Display the value
print $val;

Additional information

Related commands

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