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Update not-so-random.md

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Default seed is specified in documentation.
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Tomasz Kłak
2016-02-10 07:32:12 +01:00
parent 9a9773e049
commit 1c0935878c
1 changed files with 4 additions and 4 deletions
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8
go/not-so-random.md
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@@ -1,8 +1,7 @@
# Not So Random
Go's `rand` package makes it easy to generate all sorts of random numbers.
What they don't tell you though is that the default seed is `1`. So if you
write a program like so:
So if you write a program like so:
```go
package main
@@ -27,8 +26,9 @@ and then run it, you will get output like:
three
```
and any subsequent runs of the program will continue to produce `three`. Not
exactly what we are looking for.
and any subsequent runs of the program will continue to produce `three`. This
is because default seed for global functions in `math/rand` is
[specified](https://golang.org/pkg/math/rand/#Seed) as `1`.
If you want your program to be a little less predictable, you will want to
seed it yourself, perhaps with the current time, instead of `1`. Try adding