Many users have become somewhat aware of the check() function in TSM3 thanks to the popularity of BilisOnyxia’s sniper string. In my own personal experience, check() is definitely something that at times can be hard to wrap your brain around. I’m pretty sure I used TSM for over a year before I fully understood it!
To quickly explain check(), you can feed it 2 to 3 values in the format of check(a, b, c) where “c” can be optional. These 3 values can be any value TSM recognizes, from custom prices to flat gold values, to simple price source references like DBMarket. The check() function then takes a look at “a”, and looks to see if it is valid and greater than 0. If “a” is not valid, the custom price returns invalid. If “a” is greater than 0, the custom price will give you the value of “b” back, otherwise it gives the value for “c”. If you did not supply a value for “c” and “a” is not is not greater than 0, then the whole thing is treated as invalid. Read More