问Thinkscript中的If语句

EN

def val1;
plot val2;
if (cond) {
  val1 = <value>;
  val2 = <value>;
} else {
  # commonly used options:

  # sets the variable to be Not a Number
  val1 = Double.NaN;

  # sets the variable to what it was in the previous bar
  # commonly used for recursive counting or retaining a past value across bars
  val2 = val2[1];
}

def val1 = if <condition> then <value if true> else <value if false>;

def var1 = if(<condition>, <value if true>, <value if false>);

# using version 3, "if function"
plot Maximum1 = if(close > open, close, open);

# using version 2, "if expression"
plot Maximum2 = if close > open then close else open;

# using version 1, "if statement", with two variables, a `plot` and a `def`
plot Maximum3;
def MinimumThing;
if close > open {
    Maximum3 = close;
    MimimumThing = open;
} else {
    Maximum3 = open;
    MinimumThing = close;
}