previous next |
Foreach |
Syntax |
Foreach X In L Do C EndForeach where X is a dummy variable, L is a list, and C is a sequence of commands. |
Summary |
loop command |
Description |
The dummy variable X is assigned the value of each component of L in turn. After each assignment the command sequence C is executed. Note: don't forget to capitalize 'In'. |
Example |
Foreach N In 1..10 Do -- Note: 1..10 gives the list [1,...,10]. Print(N^2,' '); EndForeach; 1 4 9 16 25 36 49 64 81 100 ------------------------------- Use R ::= Q[x,y,z]; F := x^2y + 3y^2z - z^3; J := [Der(F,X) | X In Indets()]; -- the Jacobian for F J; [2xy, x^2 + 6yz, 3y^2 - 3z^2] ------------------------------- Foreach X In J Do -- square each component of the Jacobian PrintLn(X^2); EndForeach; 4x^2y^2 x^4 + 12x^2yz + 36y^2z^2 9y^4 - 18y^2z^2 + 9z^4 ------------------------------- |
See also: |