Ruby

Numeric#step doesn't iterate under the following conditions:

• receiver and/or by are Float
• by is negative
• to is default
• without block

Example:¶

Good:

p 1.step(by: 3).take(2) #=> [1, 4] p 1.step(by: -3).take(2) #=> [1, -2] p 1.step(by: 3.0).take(2) #=> [1.0, 4.0] p 1.0.step(by: 3).take(2) #=> [1.0, 4.0] a=[]; p 1.step(by: -3.0){|n|break a if (a << n).size == 2} #=> [1.0, -2.0] a=[]; p 1.0.step(by: -3){|n|break a if (a << n).size == 2} #=> [1.0, -2.0] 

Bad:

p 1.step(by: -3.0).take(2) #=> [] p 1.0.step(by: -3).take(2) #=> [] 

I have attached a patch.