Type detection: Difference between revisions
Content added Content deleted
(Note on deletion.) |
(Add a task description) |
||
| Line 2: | Line 2: | ||
{{draft task|FIXME}} |
{{draft task|FIXME}} |
||
This draft task needs a purpose, a description and some way to tell whether examples satisfy or do not satisfy it. |
This draft task needs a purpose, a description and some way to tell whether examples satisfy or do not satisfy it. |
||
== Task Description == |
|||
Show a function/procedure that, when given an object of type Any (or just unknown type), performs a common task. |
|||
For example: you want to process a block of text. The function takes a parameter that is, or somehow describes, the block of text (and provides a method or call to access and return that block of text). The task is then to show how function gets the text from the parameter (but not show the text processing). |
|||
== JavaScript == |
== JavaScript == |
||
Revision as of 17:56, 9 October 2015
Type detection is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.
This draft task needs a purpose, a description and some way to tell whether examples satisfy or do not satisfy it.
Task Description
Show a function/procedure that, when given an object of type Any (or just unknown type), performs a common task.
For example: you want to process a block of text. The function takes a parameter that is, or somehow describes, the block of text (and provides a method or call to access and return that block of text). The task is then to show how function gets the text from the parameter (but not show the text processing).
JavaScript
console.log(typeof('foo')); // Returns string
console.log(typeof(12345)); // Returns number
OASYS Assembler
<lang oasys_oaa>
- The following method checks if a global variable or property is an
- object type. Does not work with locals and arguments.
[&OBJ#,^]
,^<,^<< ; Remember old value ,^<*> ; Create new object ,^<<DES ; Destroy the object ,^<<EX ; Check if variable has been cleared />1RF ; It is clear :>0RF ; It is not clear
</lang>
PHP
echo gettype('foo'); // Returns string
echo gettype(12345); // Returns integer