Exact version | `1.0.2` | You can specify the exact version of a package.
Range | `>=1.0``>=1.0,<2.0``>=1.0,<1.1 | >=1.2` | By using comparison operators you can specify ranges of valid versions. Valid operators are `>`, `>=`, `<`, `<=`, `!=`. <br/>You can define multiple ranges, separated by a comma, which will be treated as a **logical AND**. A pipe symbol `|` will be treated as a **logical OR**. <br/>AND has higher precedence than OR.
Wildcard | `1.0.*` | You can specify a pattern with a `*` wildcard. `1.0.*` is the equivalent of `>=1.0,<1.1`.
Tilde Operator | `~1.2` | Very useful for projects that follow semantic versioning. `~1.2` is equivalent to `>=1.2,<2.0`. For more details, read the next section below.
### Next Significant Release (Tilde Operator)
The `~` operator is best explained by example: `~1.2` is equivalent to
`>=1.2,<2.0`, while `~1.2.3` is equivalent to `>=1.2.3,<1.3`. As you can see
it is mostly useful for projects respecting [semantic
versioning](http://semver.org/). A common usage would be to mark the minimum
minor version you depend on, like `~1.2` (which allows anything up to, but not
including, 2.0). Since in theory there should be no backwards compatibility
breaks until 2.0, that works well. Another way of looking at it is that using
`~` specifies a minimum version, but allows the last digit specified to go up.
### Stability
By default only stable releases are taken into consideration. If you would like
to also get RC, beta, alpha or dev versions of your dependencies you can do