How to convert a string to a StepRange

General Usage
1

From a YAML file I get the string “2.0:0.25:10.0”.
How can I convert it to a StepRange?

tsr="2.0:0.25:10.0"
TSR=eval(tsr) # not working
2

I’d avoid eval and just parse the numbers from the string using nums = parse.(Float64,split(tsr,":")) and then construct the range using those, range(nums[1],nums[3],step=nums[2])

1 Like
3

gives:

ERROR: ArgumentError: StepRange should not be used with floating point
Stacktrace:
 [1] steprange_last(start::Float64, step::Float64, stop::Float64)
   @ Base .\range.jl:327
 [2] StepRange{Float64, Float64}(start::Float64, step::Float64, stop::Float64)
   @ Base .\range.jl:320
 [3] StepRange(start::Float64, step::Float64, stop::Float64)
   @ Base .\range.jl:373
 [4] top-level scope
   @ REPL[7]:1
4

range(nums[1],nums[3],step=nums[2])
should work

2 Likes
5

Thank you!

6 

range(;zip((:start,:step,:stop),(parse.(Float64, split(tsr,':') )))...)# not
7

Yea, you are quoting code from my post that I didn’t write!

1 Like
8 
TSR=replace(tsr,':'=>',')
eval(Meta.parse("(:)("*TSR*')'))

or better

eval(Meta.parse(tsr))