Coding errors using GetQuantity()?

[Whistlerr]

What's wrong with the following code? The TS editor balks at the bold portions of the if statements. Obviously I would not need both, but what's causing the balks?
Input SetQty = 10000;
Def TrdQty = GetQuantity();
If TrdQty == 0 then TrdQty = SetQty else TrdQty = !isnan;
If GetQuantity() == 0 then TrdQty = SetQty else TrdQty = GetQuantity();

 

[BenTen]

Not sure what you're trying to do, but this will fix the syntax errors.

Input SetQty = 10000;
Def TrdQty = GetQuantity();
def abc = If TrdQty == 0 then TrdQty == SetQty else TrdQty == !double.nan;
def bcd = If GetQuantity() == 0 then TrdQty == SetQty else TrdQty == GetQuantity();

Change "abc" and "bcd" to your liking.

 

[halcyonguy]

What's wrong with the following code? The TS editor balks at the bold portions of the if statements. Obviously I would not need both, but what's causing the balks?
Input SetQty = 10000;
Def TrdQty = GetQuantity();
If TrdQty == 0 then TrdQty = SetQty else TrdQty = !isnan;
If GetQuantity() == 0 then TrdQty = SetQty else TrdQty = GetQuantity();

in addition to what benten said,

# ifthen_info_00

#  original
#Input SetQty = 10000;
#Def TrdQty = GetQuantity();
#If TrdQty == 0 then TrdQty = SetQty else TrdQty = !isnan;
#If GetQuantity() == 0 then TrdQty = SetQty else TrdQty = GetQuantity();


input SetQty = 10000;
def TrdQty = GetQuantity();

# you didn't use a def to set a variable to the formula.
#   you can't just start out with an if.

#   TrdQty = SetQty
#  when a comparison is within a formula, needs to be a double =
#  TrdQty == SetQty

# TrdQty == SetQty
#   will be evaluated as a boolean , if  TrdQty is equal to SetQty , then it has a value of 1 (true)  else 0


# TrdQty is already defined. 
# if you are trying to set a new value to trdqty, you can't do that.
#  you can't reassign a value to a variable that has already been defined.
# isnan() is a function to check if a variable has an error. ie. isnan(trdqty)
 
# this is wrong. not sure what you want to do with the isnan.
#def a = If TrdQty == 0 then SetQty else !isnan;

def b = If trdqty == 0 then SetQty else trdqty;
#

ps, the above will show an error, because there isn't any output functions used.
sometimes i add this when creating a study, to get rid of the error
addlabel(1, "-");

 

[Whistlerr]

Thanks all for all the help ... needless to say I'm a green TS coder and there are many idiosyncrasies in TS not covered in documentation.

 

[halcyonguy]

Thanks all for all the help ... needless to say I'm a green TS coder and there are many idiosyncrasies in TS not covered in documentation.

i agree, the online tos documentation is bad. almost every code example is overly complicated or not helpful.
i learned by looking at studies from several sites. copying them, changing them, and seeing what happens.


https://usethinkscript.com/threads/...l-languages-to-thinkscript.12376/#post-106494
tos onenote archives (need onenote installed for link to work)
jshingler
robert payne


if then else
https://usethinkscript.com/threads/increasing-the-value-of-a-variable.11128/#post-97471


fold loop info
https://usethinkscript.com/threads/coding-help-fold-vs-compoundvalue.11789/#post-101867

https://usethinkscript.com/threads/loops-while.9558/#post-86805