RosettaCodeData/Task/Conditional-structures/Zkl/conditional-structures.zkl

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if (x) y else z;
if(a)b else if (c) else d; etc
x:=(if (a) b else c);
a and b or c // usually the same as if(a) b else c, beware if b evals to False
switch(x){
case(1){...}
case("2"){...} // matches anything
case(a)[fallthrough]{...} // no break, no break has to be explicit
case(b){...}
else {...} // case a C's default, has to be at the end
}