Difference between revisions of "SetValue Command"
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<noinclude>{{Manual Page|version=4.0}}</noinclude> | <noinclude>{{Manual Page|version=4.0}}</noinclude> | ||
{{command|scripting}} | {{command|scripting}} | ||
| − | ;SetValue[ <Object A>, <Object B> ] | + | ;SetValue[ <Object A>, <Object B> ]:If A is a [[Free, Dependent and Auxiliary Objects|free object]] or a [[Points and Vectors|Point]] restricted to [[Geometric Objects#Paths|Path or Region]], its value is set to current value of ''B'' (i.e. ''A'' doesn't change value if ''B'' is changed afterwards). |
| − | :If A is a [[Free, Dependent and Auxiliary Objects|free object]] or a [[Points and Vectors|Point]] restricted to [[Geometric Objects#Paths|Path or Region]], its value is set to current value of ''B'' (i.e. ''A'' doesn't change value if ''B'' is changed afterwards). | + | :{{example|1=If ''f'' is a function, <code>SetValue[f, RandomElement[{cos(x), 3x+2, ln(x)}]]</code> defines, at random, f as being one of the functions proposed in the list.}} |
| − | {{example|1=If ''f'' is a function, | ||
| − | ;SetValue[ <Boolean b>, <0|1> ] | + | ;SetValue[ <Boolean b>, <0|1> ]:Sets the state of a boolean / check box : 1 = true, 0 = false |
| − | :Sets the state of a boolean / check box : 1 = true, 0 = false | + | :{{example|1=If ''b'' is a boolean, <code> SetValue[b,1]</code> sets the boolean ''b'' as ''true''.}} |
| − | {{example|1=If ''b'' is a boolean, <code> SetValue[b,1]</code> sets the boolean ''b'' as ''true''.}} | + | ;SetValue[ <List L>, <Number n>, <Object B> ]:Sets n-th element of the free list L to the current value of B. Number ''n'' can be at most 1 + length of L. |
| − | ;SetValue[ <List L>, <Number n>, <Object B> ] | ||
| − | :Sets n-th element of the free list L to the current value of B. Number ''n'' can be at most 1 + length of L. | ||
Revision as of 17:23, 20 November 2012
- SetValue[ <Object A>, <Object B> ]
- If A is a free object or a Point restricted to Path or Region, its value is set to current value of B (i.e. A doesn't change value if B is changed afterwards).
- Example: If f is a function,
SetValue[f, RandomElement[{cos(x), 3x+2, ln(x)}]]defines, at random, f as being one of the functions proposed in the list.
- SetValue[ <Boolean b>, <0|1> ]
- Sets the state of a boolean / check box : 1 = true, 0 = false
- Example: If b is a boolean,
SetValue[b,1]sets the boolean b as true.
- SetValue[ <List L>, <Number n>, <Object B> ]
- Sets n-th element of the free list L to the current value of B. Number n can be at most 1 + length of L.
Comments
SetValue in scripting[edit]
If you want to change value of an object in Scripting, always use SetValue rather than =. See Responsive Applets for more information.
