Is there a way to search for a string in all files inside a project in Sublime Text 3? The string is not a method.
You can search a directory using Find → Find in files. This also includes all opened tabs.
The keyboard shortcut is Ctrl⇧+F on non-Mac (regular) keyboards, and ⌘⇧+F on a Mac.
You'll be presented with three boxes: Find, Where and Replace. It's a regular Find/Find-replace search where Where specifies a file or directory to search. I for example often use a file name or . for searching the current directory. There are also a few special constructs that can be used within the Where field:
,,,,-*.doc,*.txt
Note that these are not placeholders, you type these verbatim.
Most of them are self-explanatory (e.g. -*.doc excludes files with a .doc extension).
Pressing the ... to the right will present you with all available options.
After searching you'll be presented with a Find results page with all of your matching results. To jump to specific lines and files from it you simply double-click on a line.