There are a number of factors in resolving a named variable reference. Table 8.6 describes the named variable references that are resolved for specific situations.
Notes:
• In JMP 9 and later, a, :a, and ::a have the same meaning with the Names Default To Here mode turned off.
• If the current point of execution is in a user-defined function, or a Local or Parameter JSL function body, then the Local namespace is used for creation when Default Local is specified. However, the reference rule is unchanged.
|
Form |
Reference Type |
Reference Rule |
Creation Rule |
|---|---|---|---|
|
a |
Unqualified |
If the Names Default To Here mode is on, JMP looks for the variable in these locations: • Local namespace • Here namespace • current data table If the Names Default To Here mode is off, JMP looks for the variable in these locations: • Local namespace • Here namespace • Global namespace • current data table |
• If the Names Default To Here mode is on, then JMP creates the variable in the Local namespace or in the Here namespace. • If the Names Default To Here mode is off, then JMP creates the variable in the Local namespace or in the Global namespace. |
|
:a |
Current data table |
JMP looks for the variable in the current data table. |
(Not applicable) |
|
::a Global:a |
Global |
JMP looks for the variable in the Global namespace. |
JMP creates the variable in the Global namespace. |
|
ns:a dt:a Here:a "name":a expr:a |
Qualified |
JMP looks for the variable in the specified namespace. If the variable is not found, an error results. |
JMP creates the variable in the specified namespace. Any previous values are replaced. |
|
ns["a"] ns[expr] |
Subscript |
JMP looks for the variable in the specified namespace. If the variable is not found, an error results. |
JMP creates the variable in the specified namespace. Any previous values are replaced. |
|
Platform:a |
Qualified |
JMP looks for the variable in the encapsulating platform. |
JMP creates the variable in the encapsulating platform. |
|
Local:a |
Qualified |
JMP looks for the variable within any nested local function, up to and including a function call boundary. See Example of Local:a. |
JMP creates the variable in the innermost nested local function or function call boundary. |
|
Window:a |
Qualified |
JMP looks for the variable in the encapsulating New Window window namespace. |
JMP creates the variable in the encapsulating New Window window namespace. |
|
Box:a |
Qualified |
JMP looks for the variable in the encapsulating Context Box namespace contained in a New Window window. |
JMP creates the variable in the encapsulating Context Box namespace contained in a New Window window. |
|
Sample Script |
Log Output |
|---|---|
|
Delete Symbols(); Local( {d1l1 = 12}, local:f1f1 = Function( {fa1, fa2}, {fl1 = 99}, local:fa12 = fa1 + fa2; Local( {d2l1 = 56}, local:l2l2 = 78; Show( fa12 ); Show( fl1 ); Try( Show( d1l1 ), Write( "\!n\!n***Error=" || Char( exception_msg ) || "\!n" ) ); Show Symbols(); ); local:fa12; ); f1f1( 2, 3 ); );
|
fa12 = 5; fl1 = 99; dil1 = 12;
// Local
d2l1 = 56; l2l2 = 78;
// 2 Local
// Local
fa1 = 2; fa12 = 5; fa2 = 3; fl1 = 99;
// 4 Local
// Local
d1l1 = 12;
// 1 Local
5 |