The data type and size of "_" could change overtime. The reallocation of the memory for "_" could be expensive if the data structure for "_" is complicated.
On Thursday, April 23, 2015 at 1:48:03 PM UTC-7, Stefan Karpinski wrote: > > What's the risk? > > On Thu, Apr 23, 2015 at 4:24 PM, Ryan Li <[email protected] <javascript:>> > wrote: > >> The underscore actually is used as a variable name, which could be >> dangerous in the code. >> I am not sure if this is worth to take the risk. >> >> >> On Wednesday, April 22, 2015 at 6:00:00 PM UTC-7, Darwin Darakananda >> wrote: >>> >>> You can use underscore _ as a placeholder, for example: >>> >>> _, _, x = (1, 2, 3) >>> >>> >>> On Wednesday, April 22, 2015 at 5:09:16 PM UTC-7, Ryan Li wrote: >>>> >>>> Hi, >>>> I was wondering if there is any argument placeholder in Julia. >>>> In Matlab, if we do not require one return argument, we just replace it >>>> with ~, e.g., [~,R]=qr(A). >>>> Is there any similar behavior in Julia? >>>> Best, >>>> Yingzhou >>>> >>> >
