WolframLang: Global Variable
Set[x, y]
- (short syntax:
x=y
)
Eval right-hand-side and assign it to left-hand-side. Effectively, this is how you create a global variable. Set
Technically,
Set
creates a syntax transformation rule. When the pattern on left-hand-side occur, replace it by right-hand-side. [see Set and SetDelayed](* global variable, of current session *) x = 2
Clear
- Clear the value of Symbols.
Clear
Clear[x] (* clear multiple variables *) Clear[x1,x2] (* clear all variable starting with x *) Clear["x*"]
Remove
- Remove Symbols from the system.
Note: this is more advanced. Usually you just need
Clear
. Remove