adambard/learnxinyminutes-docs
1
1
Fork 0
mirror of https://github.com/adambard/learnxinyminutes-docs.git synced 2024-11-22 12:32:09 +03:00
Code Issues Projects Releases Wiki Activity

Merge 234f4f52bb into bc3598b1cd

Browse Source
This commit is contained in:
Vishakha Tak 2024-11-19 11:04:21 +05:30 committed by GitHub
commit c69f660734
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
typescript.html.markdown
View File

@ -37,6 +37,11 @@ let notSure: any = 4;
notSure = "maybe a string instead"; notSure = "maybe a string instead";
notSure = false; // okay, definitely a boolean notSure = false; // okay, definitely a boolean
// When we are not sure about the type, and don't want to use "any", we can use "unknown" type
let unknownVariable: unknown = 'Some string'; // we don't fully know yet the type
unknownVariable = 2; // possible
const someVariable: string = unknownVariable; // Invalid; we can't assign unknownVariable to any other type (without an explicit assertion), unlike any
// Use const keyword for constants // Use const keyword for constants
const numLivesForCat = 9; const numLivesForCat = 9;
numLivesForCat = 1; // Error numLivesForCat = 1; // Error