| Type | Wish | Status | tested | Date | 29-Apr-2010 05:39 |
|---|---|---|---|---|---|
| Version | alpha 97 | Category | Native | Submitted by | BrianH |
| Platform | All | Severity | minor | Priority | high |
| Summary | SELFLESS? function |
|---|---|
| Description |
SELFLESS? would take a context parameter with the same spec as BIND's, and would return true if BIND doesn't bind 'self for that context. This is true of function contexts, and as of alpha 98 the contexts generated by loops and closures as well. If an unbound word is passed as a parameter, the same error that BIND would trigger should be triggered here as well. This function will help people screen contexts when their code absolutely depends on 'self being bound. This can happen when the existing binding of 'self in the code would cause a context leak (a security hole). |
| Example code |
; The source
selfless?: func [
"Returns true if the context doesn't bind 'self."
context [any-word! any-object!] "A reference to the target context"
/local self
][
'self =? first bind/copy [self] context
]
|
| Assigned to | n/a | Fixed in | alpha 99 | Last Update | 8-May-2010 00:24 |
|---|
| Comments | |
|---|---|
|
(0002278)
BrianH 30-Apr-2010 04:46 |
Implemented in mezz-control.r 7225. Note that this requires the #1528 changes scheduled for alpha 98 to run properly. |
|
(0002360)
Carl 7-May-2010 22:14 |
A clever function indeed, but it's been added as native (it's just a simple internal check.) |
| Date | User | Field | Action | Change |
|---|---|---|---|---|
| 8-May-2010 00:24 | BrianH | Category | Modified | Mezzanine => Native |
| 8-May-2010 00:24 | BrianH | Status | Modified | built => tested |
| 7-May-2010 22:14 | carl | Comment : 0002360 | Added | - |
| 7-May-2010 22:12 | carl | Fixedin | Modified | => alpha 99 |
| 7-May-2010 22:12 | carl | Status | Modified | waiting => built |
| 5-May-2010 23:31 | carl | Status | Modified | pending => waiting |
| 30-Apr-2010 04:47 | BrianH | Status | Modified | submitted => pending |
| 30-Apr-2010 04:46 | BrianH | Comment : 0002278 | Added | - |
| 29-Apr-2010 20:09 | BrianH | Priority | Modified | normal => high |
| 29-Apr-2010 18:38 | BrianH | Description | Modified | - |
| 29-Apr-2010 18:38 | BrianH | Code | Modified | - |
| 29-Apr-2010 05:39 | BrianH | Ticket | Added | - |