Noob question about alias.

<p>I sort of get that aliases are going to help with package dependencies. Do similar problem exist in other languages like python?</p> <hr/>**评论：**<br/><br/>justinisrael: <pre><p>Python doesn&#39;t have static typing. So in python if you had a function that accepted a type and used it in a specific way, and the type was refactored into another library, your code will still continue to use it correctly as long as you updated the import. In Go it would be a completely different type, without support for aliasing it to the new refactored location. </p></pre>MarchewaJP: <pre><p>To a some degree, yes. Python has aliases too. </p></pre>DualRearWheels: <pre><p>And as a bonus, I guess it will be possible to extend types from other packages or built in types (create new methods on alias).</p></pre>cs-guy: <pre><p>The <a href="https://github.com/golang/proposal/blob/master/design/18130-type-alias.md" rel="nofollow">new alias proposal</a> targeted for Go 1.9 does not allow defining methods on aliases of built in types or types from other packages. It says:</p> <blockquote> <p>Since T1 is just another way to write T2, it does not have its own set of method declarations. Instead, T1’s method set is the same as T2’s.</p> </blockquote> <p>Where T1 is the alias and T2 is the type it aliases.</p></pre>DualRearWheels: <pre><p>Well they took all the fun out of it.</p></pre>shovelpost: <pre><blockquote> <p>Well they took all the fun out of it.</p> </blockquote> <p>░──▓██████▓██▒─▓▓▓▓▓▒▒▓▓▒▒░▒█▒▒█▓▓▒▒░░▒▒▒███ █░─███████▓▓█▒─▓▓▓▓▓▒▒▓▓░▒▓░▓▒▒██▓▒▒▒▒▒▒████ ▒░▒████▓███▓█▒─▓▒▒▓▓▒▒▓▓░▒▓─▓▓▒██▓▒▓▒▒▒█████ ▒▒▓█████▓███▓▒░▓▒▒▓█▒░▓▓░▒▓─▓█▒██▓▒▒▒░██████ ▒▓██████▓████▓▓▓▒▓▓▓▒░▓▓──▓░▓▓▒██▓▒░░▓██████ ▓█████▓█▓▓████▓▓▒▓▓▓▒─█▓──▓░██░▓█▓▒─▒███████ ▓████▓▓▓▓▓████▓▓▒▒▓▓▒─▓▓─▓▓─▓█▒██▓░▒███████▓ ██████▓█▓▓█████▓▓─▒▓▒─▓▒─▓▓─▒▓░██▒▒████████▓ █████████▓▓█████▓▒▒▒▓─▒▒─░▓─▓▓░██▒▓████████▓ ▓▓███████▓▓███▓██▓▓▓▓─▒▒──▓░▓▓░██▓█████████▓ ▓█████████▓▓██▓██▓▒▓█▓██▒─▓▒▓▓░▓████████▓██▓ ▓█████████▓▓█████▓█████████░░▓▒▓███████▓▒██▓ ▒████████████████▓▓──────▒█▓██▓█████████▓▒██ ▓██▓██▓████████▓░──────────▒▓▒▓██████▓▓▓▓▓██ ▓██▓███▓█████▓▒────────────░▒▓██████▓▓▒▓▓▓▓█ ████████▓█▓▒▒░───░───────────▒▓▓█████▓▓▒▓▒▓█ ████████▓▒▒▒░──░▒▓▓░░──░────░░▒▒▓████▓▓▒▓▓██ ████████▒▒▒▒▒░░▓▓▓▓▒░─░░░░░░░░▒▒▒▒███▓▓▓▒███ ████████▒▒▒▓▒▒▒▓█▒▒▒▒▒▓▒▒▒▒▒░░░░░▒▓████▓▓▓██ ████████▓▓▓▓▓▓▓██▒▒▓▓▓█▓▒▓▒▒░░░░░░▒▒▓███████ ████████▓▓█▓▓███▓▒▒█▓▒██▒▓▒▒▒░░░░░░▒▒▓██████ ███████▓▓▓█▓████▓▒▒█▓▓██▓▓▓▒▒░▒░░░░▒▒▓████▓█ ███████▓▓█▓████▓▓▒▒█▓▓███▓▓▒▒▒░░░░░░▒▒▓█████ █████▓█████████▓█▓▒████████▓▓▒░──░░░░▒▓████▓ █████▓█████████▓▓▓▒████████▓▓▓▒░░░░░▒▒▓█████ ████▓▓█████████▒▓▒▓███████▓▓▓▓▓▓░─▒░▒▒██████ ████▓▓█████████▒▒▒▒███████████▓▓▓▒░░▒▒▓█████ ████▓██████████▒▒▒▒██████████████▒─░░░▒█████ ████▓██████████▓▒░▒████████▓▒░███▓─────▓████ ████▓███▓██▓███▓──▒████████▓▒▒█▓██▓░────▓███ ████▓███▓██▓███▒──░█████████▒▓█████▓░░───▓██ ███▓▓█████████▓────▓████▓▓█▓▓███████▒░░░─░▓█ ███▓██████████▒────▓█████▓▓▓████████▓▒░░──░▓ ███▓█████████──────░█████▓█████████▓▓▓▒░░░░▓ ██▓▓████████▓▒▒░────██████████████▓▒▒▓▒░▒▒░▒ ███▓████████▓▓▓▓▒───░█████████████▓▒▒▒▒▒░░░░ █▓▓████████▓▓█▓██────▒███████████▓▓▒▒▒▓▒░░── ██▓▓██████▓▒▒▓█▓▒─────▓██▓█████▓▓▓▓▒▒░▒▒░░░─ ██▓▓▓████▓▒▒░░▓▓░──────▓██▓█▓▓▓▓▓█▓▒▒░░▒░░── ███▓████▓▒▒▒▒▒██▓░──────▓██▓▓▒▓▓▓▓▒▒▒░░▒▒░── ██▓▓▓███▓▒▒▒▓▓▓▓█▓░──────▒▓▓█▓▒▓█▓▒▒░░░▒░─── ██▓▓▓▓▓▓▒▒▒▓▓▒▒─░▓▓───────▒█▓▓▓▓▒▒▒░░─░▒░─── ███▓███▓▒▒▓▓▒▒▒▒──▓▓░░───▒▓▓▒▒▓█▓▒▒▒░──░░─── ██▓▒▓▓▓▓▒▒▓▓▒▒▓▒▒░░▓▓▒░──▓▓▓▒▒▒▒▒▓▓▓▒░─░──── ███▓▓▓▓▓▒▒▓▓▒▒▓▒▒▒▒▒▓▒▒░─░▓▒─░▓▓▓▒▓▓▓──░──── ███▒▓▓▓▓▓▒▓▓▒▒▒▓▒▓▒▒▓▓░░▒▓▓▒▒░▒▒▒▒▒▒▓▒░───── ▓▓█▓▓▓▓██▓▓▓▒▒▒▒▒▒▓▒▓▓▒░▒▒▒▒▒▓▓▒▒▒▒▒░─────── ███▓▓▓█▓▓▓▓▓▒▒▒▒▒▒▒▒▓▓▓▒▒▓▒░▒▓██▓▒▓▓░─────── ███▒▓▓▓█▓▓▓▒▒▒▒▒▒▒▒▒▒▒▒▒▒▓▓▒▓▓█▓▓▒────────── ███▒▓▓▓▓▓▓▓▓▒▒▒▒▒▒▒▒▒▒▒▒▒▒▓▓▓▓▒▒──────────── ████▓▓▓▓▓▓▓▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒░░░────────── ████▒▓▓▓▓▓▓▒▒▒▒▒▒▒▒▒▒▒▒▒░░░░░░░░▒─░░──────── ████▒▒▓▓▓▓▓▓▒▒▒▒▒▒▒▒▒▒▒▒░░░▒▒░░─░░░░──────── ████▓▒▓▓▓▓▓▓▓▓▒▒▒▒▒▒▒▒▒▒░░▒▒▒░░░─░░───────── █████▒▒▓▒▒▓▓▓▓▓▒▒▒▒▓▒▒▒▒░░░░▒▒▒▒░░░───────── ████▓▒▓▓▓▓▓▓▓▓▓▓▓▓▒▓▒▒▒▒▒▒░░▒▒▒▒░░░───────── ████▓▒▓▓▓▓▓▓▒▓▓▓▓▓▓▓▒▒▒▒▒▒▒▒▒▒▒░░─░───────── ████▓▓▓▓▓▓▒▒▒▒▓▓▓▓▓▓▒▒▓▒▒▒▒▒▒▒░─░░░───────── ████▓▓▓▓▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒░░░░░▒░─────────</p> <p><strong>Good!</strong></p></pre>