Geterror - Revision history

Ximan: /* Usage Example */

2010-11-03T00:18:10Z

‎Usage Example

Ximan: /* See Also */

2010-11-02T16:36:40Z

‎See Also

Ximan: /* Upon Error */

2010-11-02T06:35:12Z

‎Upon Error

Ximan: /* Description */

2010-11-02T06:34:31Z

‎Description

Ximan at 04:45, 2 November 2010

2010-11-02T04:45:42Z

Ximan: Created page with "== Calling Convention == Call local r[,...] = sl.non([...]) Args a1...aN are of any type Results r1...rN are boolean == Usage Example == local sl = dofile(getinstalldir()....."

2010-11-02T04:33:02Z

Created page with "== Calling Convention == Call local r[,...] = sl.non([...]) Args a1...aN are of any type Results r1...rN are boolean == Usage Example == local sl = dofile(getinstalldir()....."

New page

== Calling Convention ==
Call
local r[,...] = sl.non([...])
Args
a1...aN are of any type
Results
r1...rN are boolean

== Usage Example ==

local sl = dofile(getinstalldir()..'/lib/simplelib.lua')
non = sl.non
null = sl.null
local a,b,c,d = non(false,nil,null,0)
print(a)
print(b)
print(c)
print(d)

--> 'false'
--> 'true'
--> 'true'
--> 'false'

== Description ==

Tests each supplied argument as to whether it is [[nil]] or [[null]]. If so, then non returns true for that value, otherwise false. non returns the same number of values as the number of arguments it accepted.

== Upon Error ==

If non receives no arguments, then it returns a single nil value.

== See Also ==

* [[ERR]]

* [[nil]]

* [[null]]

* [[try]]

* [[type]]

@@ Line 10: / Line 10: @@
   local sl = dofile(getinstalldir()..'/lib/simplelib.lua')
   local f = function() local a  = {} a = a + 1 end
   local h = function(eref)
-    local e = geterror(eref)
+    local le = eref
-    print(e._errmsg)
+    if type(le) == 'string' then
   end
-  sl.try(f,h)
+  local c,d = sl.try(f,h)
 == Description ==

← Older revision		Revision as of 16:36, 2 November 2010
Line 33:		Line 33:

	== See Also ==		== See Also ==
		+
		+	* [http://www.easyuo.com/openeuo/wiki/index.php/Simplelib simplelib]

	* [[ERR]]		* [[ERR]]

@@ Line 30: / Line 30: @@
 == Upon Error ==
-If geterror receives no arguments, or a non-numeric argument, or the argument is out of range, then it returns a single nil value.
+If geterror receives no arguments, or a non-numeric argument, or the argument is out of range, then it returns a single [[nil]] value.
 == See Also ==

@@ Line 19: / Line 19: @@
 == Description ==
-geterror returns the recorded error table of a detected table when given a valid numeric error reference, eref.  Error table has the following fields:
+geterror returns the recorded error table of a detected error when given a valid numeric error reference, eref.  An error table has the following fields:
   field     : description

@@ Line 1: / Line 1: @@
 == Calling Convention ==
 Call
-  local r[,...] = sl.non([...])
+  local e = sl.geterror(eref)
 Args
-  a1...aN are of any type
+  eref is a number
 Results
-  r1...rN are boolean
+  e is a table with key:val pair _type:'table:exception' defined
 == Usage Example ==
   local sl = dofile(getinstalldir()..'/lib/simplelib.lua')
-  non  = sl.non
+  local f = function() local a  = {} a = a + 1 end
-  null = sl.null
+  local h = function(eref)
-  local a,b,c,d = non(false,nil,null,0)
+   local e = geterror(eref)
- print(a)
+   print(e._errmsg)
- print(b)
+  end
-  print(c)
+  sl.try(f,h)
-  print(d)
-−
- --> 'false'
- --> 'true'
- --> 'true'
- --> 'false'
 == Description ==
-Tests each supplied argument as to whether it is [[nil]] or [[null]].  If so, then non returns true for that value, otherwise false. non returns the same number of values as the number of arguments it accepted.
+geterror returns the recorded error table of a detected table when given a valid numeric error reference, eref.  Error table has the following fields:
 == Upon Error ==
-If non receives no arguments, then it returns a single nil value.
+If geterror receives no arguments, or a non-numeric argument, or the argument is out of range, then it returns a single nil value.
 == See Also ==