Naming Scalar Variables : Scalar « Language Basics « Perl
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- Language Basics
- Scalar
Naming Scalar Variables
The name you use for a scalar variable can contain letters, numbers, and underscores.
Such a name must start with the $ symbol.
A variable's name can be at least 255 characters long.
Scalar variable names are case sensitive-$variable1 is not the same as $Variable1.
Related examples in the same category
| 1. | Constant scalar | | |
| 2. | Convert to scalar | | |
| 3. | Creating a Scalar | | |
| 4. | Declare scalar variable to store the integer value | | |
| 5. | Program to illustrate the use of scalar variables. | | |
| 6. | scalar value interpolation | | |
| 7. | Scalars (Denoted by $) | | |
| 8. | Simple calculation with scalar variable | | |
| 9. | A scalar is a variable that holds a single value, a single string, or a number. | | |
| 10. | A scalar variable can reference a string value or a numeric value. | | |
| 11. | Assign new value to the integer scalar variable | | |
| 12. | Compound assignment operator with scalar variable | | |
| 13. | Concatenate two scalar variables with double quotes | | |
| 14. | $data is a scalar variable, while @data is an array | | |
| 15. | Initializing scalars and printing their values | | |
| 16. | Perl supports integers (decimal, octal, hexadecimal), floating point numbers, scientific notation, Booleans, and null. | | |
| 17. | Merge scalar variable into the string for output | | |
| 18. | If there are no quotes, then Perl has to decide whether the value is a string or a numeric value. | | |
| 19. | Scalar variables hold a single number or string and are preceded by a dollar sign ($). | | |
| 20. | Curly Braces | | |