「SetValue 指令」修訂間的差異
出自GeoGebra Manual
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| − | <noinclude>{{Manual Page|version= | + | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|scripting}} |
| − | ;SetValue | + | ;SetValue( <Boolean>, <0|1> ) |
| − | :{{ | + | :Sets the state of a boolean / check box : 1 = true, 0 = false |
| − | ;SetValue | + | :{{example|1=If ''b'' is a boolean, <code> SetValue(b,1)</code> sets the boolean ''b'' as ''true''.}} |
| − | :{{ | + | |
| − | ;SetValue | + | ;SetValue( <Object>, <Object> ) |
| − | : | + | :Let''A'' be the first and ''B'' the second object. 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.}} | ||
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| + | ;SetValue( <List>, <Number>, <Object> ) | ||
| + | :Let ''n'' be the ''<Number>''. The command SetValue sets the n-th element of a free list to the current value of the object. Number ''n'' can be at most 1 + length of L. | ||
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| + | ;SetValue( <[[Action_Objects#Drop-down lists|drop-down list]]>, <Number n > ) : Set ''n'' as [[SelectedIndex_Command| the index of the selected element]] in the drop-down list. | ||
於 2021年7月27日 (二) 09:52 的修訂
- SetValue( <Boolean>, <0|1> )
- Sets the state of a boolean / check box : 1 = true, 0 = false
- 範例： If b is a boolean,
SetValue(b,1)sets the boolean b as true.
- SetValue( <Object>, <Object> )
- LetA be the first and B the second object. 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).
- 範例： 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( <List>, <Number>, <Object> )
- Let n be the <Number>. The command SetValue sets the n-th element of a free list to the current value of the object. Number n can be at most 1 + length of L.
- SetValue( <drop-down list>, <Number n > )
- Set n as the index of the selected element in the drop-down list.
